CN112103088A - Solid-state capacitor cell, laminated capacitor cell and composite power capacitor cell based on composite material electrode - Google Patents
Solid-state capacitor cell, laminated capacitor cell and composite power capacitor cell based on composite material electrode Download PDFInfo
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- CN112103088A CN112103088A CN201910528695.3A CN201910528695A CN112103088A CN 112103088 A CN112103088 A CN 112103088A CN 201910528695 A CN201910528695 A CN 201910528695A CN 112103088 A CN112103088 A CN 112103088A
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- 239000000463 material Substances 0.000 claims abstract description 109
- 239000007772 electrode material Substances 0.000 claims abstract description 72
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052744 lithium Inorganic materials 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
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- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 6
- 239000002223 garnet Substances 0.000 claims description 6
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- 239000000126 substance Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
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- 229910009228 Li2S—P2S5 Inorganic materials 0.000 claims description 3
- 229910002984 Li7La3Zr2O12 Inorganic materials 0.000 claims description 3
- 229910000857 LiTi2(PO4)3 Inorganic materials 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 239000002228 NASICON Substances 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- OEMGCAOEZNBNAE-UHFFFAOYSA-N [P].[Li] Chemical compound [P].[Li] OEMGCAOEZNBNAE-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
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- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 3
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- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
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- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 3
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- 238000004146 energy storage Methods 0.000 abstract description 2
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/04—Hybrid capacitors
- H01G11/06—Hybrid capacitors with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
- H01G11/12—Stacked hybrid or EDL capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/54—Electrolytes
- H01G11/56—Solid electrolytes, e.g. gels; Additives therein
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
A solid state capacitor cell based on composite electrodes comprises at least one first composite capacitor electrode and at least one second composite capacitor electrode; the first composite material capacitor electrode and the second composite material capacitor electrode are arranged in a staggered mode; a solid ion conductor film is arranged between the adjacent first composite material capacitor electrode and the second composite material capacitor electrode; the first composite material capacitor electrode is made of a mixture of a first electrode active material and a solid ion conductor material I; the second composite material capacitance electrode is made of a mixture of a second electrode active material and a solid ion conductor material II. The invention also discloses a solid-state laminated capacitor cell based on the composite material electrode and a solid-state composite capacitor cell based on the composite material electrode. The solid-state capacitor cell based on the composite material electrode can meet the energy storage requirement, effectively enhance the wettability between the solid-state ion conductor film and the electrode, effectively reduce the interface resistance between the solid-state ion conductor film and the electrode, and improve the ion permeability.
Description
Technical Field
The invention belongs to the technical field of energy storage equipment, and particularly relates to a solid-state capacitor cell, a laminated capacitor cell and a composite power capacitor cell based on a composite material electrode.
Background
Solid state capacitors are a type of capacitor technology. Unlike lithium ion capacitors and lithium ion polymer capacitors that are commonly used today, solid state capacitors are one type of capacitor that use solid electrodes and solid electrolytes. The traditional liquid lithium capacitor is also called as a rocking chair type capacitor by scientists visually, wherein two ends of the rocking chair are provided with a positive pole and a negative pole of the capacitor, and the middle part of the rocking chair is provided with electrolyte (liquid). And the lithium ions run back and forth at the two ends of the rocking chair just like excellent athletes, and the charge and discharge process of the capacitor is completed in the motion process of the lithium ions from the positive electrode to the negative electrode and then to the positive electrode. The principle of the solid capacitor is the same as that of the capacitor, except that the electrolyte is solid, and the density and the structure of the capacitor can enable more charged ions to be gathered at one end to conduct larger current, so that the capacity of the capacitor is improved. Therefore, the solid state capacitance volume will become smaller for the same amount of power. Moreover, because there is not electrolyte in the solid-state capacitor, it will be easier to seal up, when using on the large-scale equipment such as car, also need not additionally to increase cooling tube, electronic control etc. again, not only practiced thrift the cost, can also effectively lighten weight.
Although the existing solid capacitor can meet the use requirements to a certain extent, the following defects still exist:
1) the binding force between the solid electrolyte and the electrode is insufficient;
2) the wettability between the solid electrolyte and the electrode is poor;
3) the interface resistance between the solid electrolyte and the electrode is large.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a solid state capacitor cell, a stacked capacitor cell and a composite power capacitor cell based on a composite material electrode, which can effectively improve the wettability between a solid state ion conductor film and the electrode, and can effectively reduce the interface resistance between the solid state ion conductor film and the electrode, thereby improving the ion permeability.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention firstly provides a solid-state capacitor cell based on a composite material electrode,
comprises at least one first composite capacitive electrode and at least one second composite capacitive electrode;
the first composite material capacitor electrode and the second composite material capacitor electrode are arranged in a staggered mode;
a solid ion conductor film is arranged between the first composite material capacitor electrode and the second composite material capacitor electrode which are adjacent;
the first composite material capacitor electrode is made of a composition or a mixture of a first electrode active material and a solid ion conductor material I;
the second composite material capacitor electrode is made of a composition or a mixture of a second electrode active material and a solid ion conductor material II.
Further, the number of the first composite material capacitor electrodes N and the number of the second composite material capacitor electrodes M satisfy:
m ═ N, or, | M-N | ═ 1.
Further, the side surface of the first composite material capacitor electrode is a plane, and the solid ion conductor film is attached to the side surface of the first composite material capacitor electrode; or the like, or, alternatively,
a first groove is formed in the side face of the first composite material capacitor electrode, and the solid ion conductor film attached to the corresponding side face of the first composite material capacitor electrode is embedded into the first groove; or the like, or, alternatively,
first embedding holes are formed in the side face of the first composite material capacitor electrode (10) in an array mode, and the solid ion conductor film attached to the corresponding side face of the first composite material capacitor electrode is embedded into the first embedding holes.
Further, the width of the first groove is gradually increased along the direction from the groove bottom to the notch;
in two radial sections I cut on the same first embedding hole by any two radial sections perpendicular to the axis of the first embedding hole, the geometric dimension of the radial section I on one side close to the bottom of the first embedding hole is smaller than or equal to that of the radial section I on one side close to the hole opening of the first embedding hole.
Further, the side surface of the second composite material capacitor electrode is a plane, and the solid ion conductor film is attached to the side surface of the second composite material capacitor electrode; or the like, or, alternatively,
a second groove is formed in the side face of the second composite material capacitor electrode, and the solid ion conductor film attached to the corresponding side face of the second composite material capacitor electrode is embedded into the second groove; or the like, or, alternatively,
and second embedding holes are formed in the side face of the second composite material capacitor electrode in an array mode, and the solid ion conductor film attached to the corresponding side face of the second composite material capacitor electrode is embedded into the second embedding holes.
Further, the width of the second groove is gradually increased along the direction from the groove bottom to the notch;
in two radial sections II obtained by cutting any two radial sections perpendicular to the axis of the second embedded hole on the same second embedded hole, the geometric dimension of the radial section II close to the bottom side of the second embedded hole is smaller than or equal to that of the radial section II close to the orifice side of the second embedded hole.
Further, the first capacitance electrode active material and the second capacitance electrode active material are made of one or a mixture of at least two of lithium iron phosphate, ternary materials, sulfur-containing conductive materials, porous carbon layer air capacitance electrodes containing metal or organic materials, layered metal oxide materials, oxygen-containing organic polymer materials, metal lithium, metal sodium, metal aluminum, metal magnesium, metal potassium, graphene, hard carbon, silicon oxide and silicon simple substances;
the solid ion conductor membrane and the composite material anode and the composite material cathode respectively form a good electrode/electrolyte interface by adopting a hot-pressing physical method or a chemical method.
The solid ion conductor membrane, the solid ion conductor material I and the solid ion conductor material II are made of one or a mixture of at least two of gel, oxide, sulfide and organic polymer;
the gel is an electrolyte composed of ternary components of a high molecular compound, a metal salt and/or a solvent, and is prepared by adopting one or a mixture of at least two of but not limited to poly (vinyl alcohol) based derivative-acid or alkali or metal salt, poly (benzimidazole) based derivative-metal salt-organic solvent, poly (vinylidene fluoride) based derivative-metal salt-organic solvent, poly (ethylene oxide) based derivative-metal salt-organic solvent and poly (methyl methacrylate) based derivative-metal salt-organic solvent;
the oxide includes, but is not limited to sodium super ion conductor (NASICON) type-LiTi2(PO4)3And derivatives thereof, lithium super ion conductor (LISICON) type-Li14Zn(GeO4)4Derivatives thereof and Garnet (Garnet) -type-Li7La3Zr2O12And derivatives thereof;
the sulfide includes but is not limited to Li10GeP2S12、Li2S-P2S5And their derivatives, halides, hydrides and lithium phosphorus oxynitrides;
the organic polymer is prepared from one or a mixture of at least two of poly (ethylene oxide) (PEO) based derivative-metal salt, poly (benzimidazole) based derivative-metal salt and poly (vinylidene fluoride) based derivative-metal salt.
Further, the molar ratio between the solid-state ion conductor material I and the first electrode active material in the first composite material capacitor electrode is less than or equal to 100%;
the molar ratio of the solid ion conductor material II in the second composite material capacitor electrode to the second electrode active material is less than or equal to 100%.
Further, the first electrode active material is uniformly distributed in a granular shape, and gaps of the first electrode active material granules are filled with the solid ion conductor material I;
the second electrode active material is uniformly distributed in a granular shape, and gaps of the second electrode active material granules are filled with the solid ion conductor material II.
The invention also provides a solid-state laminated capacitor cell based on the composite material electrode,
the solid-state capacitor battery cell comprises a soft package body, wherein at least two solid-state capacitor battery cells according to any one of claims 1 to 9 are compounded together;
in two adjacent solid-state capacitor cells, a first composite material capacitor electrode at one end of the solid-state capacitor cell is adjacent to a second composite material capacitor electrode at the other end of the solid-state capacitor cell, and an electronically conductive and ion-isolated bipolar collector plate is arranged between the adjacent first composite material capacitor electrode and the adjacent second composite material capacitor electrode.
The invention also provides a solid-state composite capacitor cell based on the composite material electrode,
the solid-state capacitor battery cell comprises a soft package body, wherein at least two solid-state capacitor battery cells according to any one of claims 1 to 9 are compounded together;
in two adjacent ones of the solid-state capacitance cells,
the first composite material capacitor electrode at one end part of the solid capacitor cell is arranged adjacent to the first composite material capacitor electrode at the other end part of the solid capacitor cell, and the two adjacent first composite material capacitor electrodes are compounded together, or an electronically conductive and ion-isolated bipolar collector plate is arranged between the two adjacent first composite material capacitor electrodes, or an electronically insulating and ion-isolated insulating diaphragm is arranged between the two adjacent first composite material capacitor electrodes;
or the like, or, alternatively,
wherein the second composite capacitor electrode of one of the solid capacitor cell ends is disposed adjacent to the second composite capacitor electrode of another of the solid capacitor cell ends; the two adjacent second composite material capacitor electrodes are compounded together, or an electronically conductive and ionically isolated bipolar collector plate is arranged between the two adjacent second composite material capacitor electrodes, or an electronically insulating and ionically isolated insulating diaphragm is arranged between the two adjacent second composite material capacitor electrodes;
or the like, or, alternatively,
the first composite material capacitor electrode at one end of the solid capacitor cell is adjacent to the second composite material capacitor electrode at the other end of the solid capacitor cell, and an insulating diaphragm which is electronically insulated and ionically isolated is arranged between the adjacent first composite material capacitor electrode and the adjacent second composite material capacitor electrode.
The invention has the beneficial effects that:
according to the solid-state capacitor cell based on the composite material electrode, the first composite material capacitor electrode is made of the mixture of the first electrode active material and the solid-state ion conductor material, so that ions can enter the solid-state ion conductor material in the first composite material capacitor electrode through the solid-state ion conductor film, the ion permeability and the wettability between the solid-state ion conductor film and the first composite material capacitor electrode can be effectively improved, and the interface resistance between the solid-state ion conductor film and the first composite material capacitor electrode is reduced; similarly, the second composite material capacitor electrode is made of a mixture of a second electrode active material and a solid ion conductor material, ions can enter the solid ion conductor material in the second composite material capacitor electrode through the solid ion conductor film, so that the ion permeability and the wettability between the solid ion conductor film and the second composite material capacitor electrode can be effectively improved, and the interface resistance between the solid ion conductor film and the second composite material capacitor electrode is reduced; in conclusion, the solid-state capacitor cell based on the composite material electrode can effectively improve the wettability between the solid-state ion conductor film and the electrode, effectively reduce the interface resistance between the solid-state ion conductor film and the electrode, and improve the ion permeability.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
fig. 1 is a schematic structural diagram of a solid capacitor electric core in accordance with an embodiment 1 of the present invention, specifically, a schematic structural diagram when the number N of first composite capacitor electrodes and the number M of second composite capacitor electrodes satisfy N-M-1;
FIG. 2 is detail A of FIG. 1;
FIG. 3 is a schematic view of the microstructure of a first composite capacitive electrode;
FIG. 4 is a schematic view of the microstructure of a second composite capacitive electrode;
fig. 5 is a schematic structural diagram of a solid-state capacitor electric core embodiment 2 based on composite material electrodes, specifically, a schematic structural diagram when the number N of the first composite material capacitor electrodes is 1 and the number M of the second composite material capacitor electrodes is 2;
FIG. 6 is detail B of FIG. 5;
fig. 7 is a schematic structural diagram of a solid-state capacitor electric core in accordance with an embodiment 3 of the present invention, specifically, a schematic structural diagram when the number N of the first composite capacitor electrodes is 2 and the number M of the second composite capacitor electrodes is 1;
FIG. 8 is detail C of FIG. 7;
fig. 9 is a schematic structural diagram of a solid-state capacitor cell in accordance with embodiment 4 of the present invention, specifically, a schematic structural diagram when the number of first composite capacitor electrodes is equal to that of second composite capacitor electrodes;
FIG. 10 is a schematic structural diagram of a case where the difference between the number of first composite capacitive electrodes and the number of second composite capacitive electrodes is equal to 1;
FIG. 11 is a schematic structural diagram of the case where the difference between the number of the second composite capacitive electrodes and the number of the first composite capacitive electrodes is equal to 1;
fig. 12 is a first structural schematic diagram of a solid-state stacked capacitor cell based on composite material electrodes according to the present invention, specifically, a structural schematic diagram of the solid-state stacked capacitor cell where the number N of first composite material capacitor electrodes is equal to the number M of second composite material capacitor electrodes, where a first composite material capacitor electrode tab and a second composite material capacitor electrode tab are respectively disposed only at two ends of the solid-state stacked capacitor;
fig. 13 is a schematic structural view of a solid-state laminated capacitor cell when all the first composite capacitor electrodes are provided with first composite capacitor electrode tabs and all the second composite capacitor electrodes are provided with second composite capacitor electrode tabs;
fig. 14 is a second structural diagram of a solid-state stacked capacitor cell based on composite electrodes according to the present invention, specifically, a structural diagram when an absolute value of a difference between the number N of first composite capacitor electrodes and the number M of second composite capacitor electrodes in the solid-state capacitor cell is equal to 1;
fig. 15 is a schematic structural diagram of an embodiment 6 of a solid-state composite capacitor cell based on a composite electrode according to the present invention, specifically, a first structural diagram of a solid-state composite capacitor cell formed by at least two solid-state capacitor cells in embodiment 1;
fig. 16 is a schematic diagram of a second structure of a solid-state composite capacitor cell formed by at least two solid-state capacitor cells in example 1;
fig. 17 is a schematic diagram of a first structure when at least two solid-state capacitor cells of embodiment 2 are combined together;
fig. 18 is a schematic diagram of a first structure when at least two solid-state capacitor cells of embodiment 3 are combined together;
fig. 19 is a second structural diagram of a composite structure of at least two solid-state capacitor cells according to embodiment 2;
fig. 20 is a schematic diagram of a second structure when at least two solid-state capacitor cells in embodiment 3 are combined together;
fig. 21 is a schematic structural diagram of an embodiment 7 of a solid-state composite capacitor cell based on a composite electrode according to the present invention, specifically, a schematic structural diagram when at least two solid-state capacitor cells in embodiment 1 are combined together;
fig. 22 is a schematic structural diagram of a case where at least two solid-state capacitance cells 100 in embodiment 2 and embodiment 3 are combined together.
Description of reference numerals:
10-a first composite capacitive electrode; 11-a first electrode active material; 12-a first groove; 13-solid ion conductor material I; 14-a first composite capacitive electrode tab;
20-a second composite capacitive electrode; 21-a second electrode active material; 22-a second groove; 23-solid ion conductor material ii; 24-a second composite capacitive electrode tab;
30-a solid ion conductor membrane;
100-solid state capacitive cells; 101-soft bag body; 102-a bipolar collector plate; 103-soft bag body; 104-bipolar collector plate; 105-an insulating membrane; 106-insulating diaphragm.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
Example 1
Fig. 1 is a schematic structural diagram of a solid-state capacitor cell in accordance with an embodiment 1 of the present invention. The solid-state capacitor cell based on composite material electrodes in the embodiment comprises at least one first composite material capacitor electrode 10 and at least one second composite material capacitor electrode 20. The first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 are arranged in a staggered mode, and a solid ion conductor film 30 is arranged between the adjacent first composite material capacitor electrode 10 and the adjacent second composite material capacitor electrode 20.
The first composite material capacitor electrode 10 of the present embodiment is made of a composition or a mixture of a first electrode active material 11 and a solid ion conductor material i 13; specifically, the first electrode active material 11 of the present embodiment is uniformly distributed in a granular shape, and the gaps of the first electrode active material granules are filled with the solid ion conductor material i 13. The molar ratio between the solid ion conductor material I13 and the first electrode active material 11 in the first composite material capacitor electrode 10 is 100% or less. The first composite material capacitor electrode is made of the mixture of the first electrode active material 11 and the solid ion conductor material I13, and the solid ion conductor material I13 mixed in the first composite material capacitor electrode 10 can be communicated with the solid ion conductor membrane 30 in an ion conduction mode, so that the ion permeability can be effectively improved, and the interface resistance between the solid state and the electrode can be reduced. The solid ion conductor material i 13 in this embodiment is made of the same material as the solid ion conductor film 30, and certainly, different materials may be used between the solid ion conductor material i 13 and the solid ion conductor film 30, as long as the effects of enhancing the wettability between the solid ion conductor film 30 and the first composite material capacitor electrode 10, reducing the interface resistance between the solid ion conductor film 30 and the first composite material capacitor electrode 10, and increasing the ion permeability can be achieved.
The second composite material capacitor electrode 20 of the present embodiment is made of a composite or a mixture of a second electrode active material 21 and a solid ion conductor material ii 23; specifically, the second electrode active material 21 of the present embodiment is uniformly distributed in a granular shape, and the gaps of the second electrode active material granules are filled with the solid ion conductor material ii 23. The molar ratio between the solid ion conductor material II 23 and the second electrode active material 21 in the second composite material capacitor electrode 20 is less than or equal to 100%. The second composite material capacitor electrode 20 is made of a mixture of the second electrode active material 21 and the solid ion conductor material II 23, and the solid ion conductor material II 23 mixed in the second composite material capacitor electrode 20 can be communicated with the solid ion conductor membrane 30 in an ion conduction mode, so that the ion permeability can be effectively improved, and the interface resistance between the solid state and the electrode can be reduced. The solid ion conductor material ii 23 of this embodiment is made of the same material as the solid ion conductor film 30, and of course, it is only necessary to enhance the wettability between the solid ion conductor film 30 and the first composite material capacitive electrode 10 and the second composite material capacitive electrode 20, reduce the interface resistance between the solid ion conductor film 30 and the first composite material capacitive electrode 10 and the second composite material capacitive electrode 20, and increase the ion permeability.
Further, the number N of the first composite capacitive electrodes 10 and the number M of the second composite capacitive electrodes 20 satisfy:
m ═ N, or, | M-N | ═ 1.
Specifically, the number N of the first composite capacitive electrodes 10 and the number M of the second composite capacitive electrodes 20 in this embodiment satisfy: m ═ N ═ 1.
Further, the side surface of the first composite capacitive electrode 10 of the present embodiment is a plane, and the solid ion conductor film 30 is attached to the side surface of the first composite capacitive electrode 10. Of course, in some embodiments, the first groove may also be disposed on the side surface of the first composite material capacitor electrode 10, and the solid ion conductor film 30 attached to the corresponding side surface of the first composite material capacitor electrode 10 is embedded in the first groove, specifically, the first groove may be disposed in various structures, such as but not limited to a wave groove, a triangular sawtooth groove, a trapezoidal groove, a V-shaped groove, a rectangular groove, and the like. In order to increase the bonding area of the solid ion conductor film 30 to the side surface of the first composite material capacitor electrode 10, the width of the first groove of the present embodiment is gradually increased along the direction in which the groove bottom points to the notch. In some embodiments, first embedding holes may also be arranged in an array on the side surface of the first composite material capacitor electrode 10, and the solid ion conductor film 30 attached to the corresponding side surface of the first composite material capacitor electrode 10 is embedded in the first embedding holes. Specifically, in two radial sections I cut on the same first embedding hole by any two radial sections perpendicular to the axis of the first embedding hole, the geometric dimension of the radial section I on one side close to the bottom of the first embedding hole is smaller than or equal to that of the radial section I on one side close to the hole opening of the first embedding hole. Specifically, the first embedding hole may adopt various structures, such as a conical embedding hole, a square conical embedding hole, a bell-mouth-shaped embedding hole, and the like, which are not described repeatedly. By providing the first groove or the first insertion hole in the first composite capacitive electrode 10, the bonding strength and the wettability between the first composite capacitive electrode 10 and the solid ion conductor film 30 can be effectively enhanced, and the interface resistance between the first composite capacitive electrode 10 and the solid ion conductor film 30 can be reduced.
The second composite capacitive electrode 20 of this embodiment has a planar side surface, and the solid ion conductor film 30 is attached to the side surface of the second composite capacitive electrode 20. When hot, in some embodiments, a second recess may be provided in the side of the second composite capacitive electrode 20, into which the solid ion conductor film 30 is embedded in conformity with the corresponding side of the second composite capacitive electrode 20. Specifically, the first groove may be configured in various structures, such as but not limited to a wave groove, a triangular sawtooth groove, a trapezoidal groove, a V-shaped groove, a rectangular groove, and the like. In order to increase the bonding area between the solid ion conductor film 30 and the side face of the second composite material capacitance electrode 20, the width of the second groove is gradually increased along the direction in which the groove bottom points toward the notch. In some embodiments, second embedding holes may also be arranged in the side surface of the second composite material capacitor electrode 20 in an array, and the solid ion conductor film 30 attached to the corresponding side surface of the second composite material capacitor electrode 20 is embedded in the second embedding holes. In two radial sections II obtained by cutting any two radial sections perpendicular to the axis of the second embedded hole on the same second embedded hole, the geometric dimension of the radial section II close to the bottom side of the second embedded hole is smaller than or equal to that of the radial section II close to the hole opening side of the second embedded hole. The second embedding holes are of various structures, such as conical embedding holes, square conical embedding holes, horn mouth-shaped embedding holes and the like, and description is omitted. By providing the second groove on the second composite capacitive electrode 20, the bonding strength and the wettability between the second composite capacitive electrode 20 and the solid ion conductor film 30 are enhanced, and the interface resistance between the second composite capacitive electrode 20 and the solid ion conductor film 30 is reduced.
Specifically, in some embodiments, only the first groove or the first embedding hole may be provided on the side surface of the first composite capacitive electrode 10, or both the first groove and the first embedding hole may be provided on the side surface of the first composite capacitive electrode 10. Similarly, in some embodiments, the second groove or the second embedding hole may be provided only on the side surface of the second composite capacitive electrode 20, or both the second groove and the second embedding hole may be provided on the side surface of the second composite capacitive electrode 20.
Further, the first capacitance electrode active material 11 and the second capacitance electrode active material 21 are made of one or a mixture of at least two of lithium iron phosphate, ternary materials, sulfur-containing conductive materials, porous carbon layer air capacitance electrodes containing metal or organic materials, layered metal oxide materials, oxygen-containing organic polymer materials, metal lithium, metal sodium, metal aluminum, metal magnesium, metal potassium, graphene, hard carbon, silicon oxide and silicon simple substances. Specifically, the first capacitor electrode active material 11 and the second capacitor electrode active material 21 may be made of the same material, or may be made of different materials, and the description thereof will not be repeated.
The solid ion conductor membrane 30 forms a good electrode/electrolyte interface with the composite anode and the composite cathode respectively by a hot-pressing physical method or a chemical method. Specifically, the solid ion conductor material I13 and the solid ion conductor material II 23 are made of one or a mixture of at least two of gel, oxide, sulfide and organic polymer. The gel is an electrolyte composed of ternary components of a high molecular compound, a metal salt and/or a solvent, and is prepared by adopting one or a mixture of at least two of but not limited to poly (vinyl alcohol) based derivative-acid or alkali or metal salt, poly (benzimidazole) based derivative-metal salt-organic solvent, poly (vinylidene fluoride) based derivative-metal salt-organic solvent, poly (ethylene oxide) based derivative-metal salt-organic solvent and poly (methyl methacrylate) based derivative-metal salt-organic solvent. The oxide includes, but is not limited to sodium super ion conductor (NASICON) type-LiTi2(PO4)3And derivatives thereof, lithium super ion conductor (LISICON) type-Li14Zn(GeO4)4Derivatives thereof and Garnet (Garnet) -type-Li7La3Zr2O12And derivatives thereof. The sulfide includes but is not limited to Li10GeP2S12、Li2S-P2S5And derivatives, halides, hydrides and lithium phosphorus oxynitrides thereof. The organic polymer is prepared from one or a mixture of at least two of poly (ethylene oxide) (PEO) based derivative-metal salt, poly (benzimidazole) based derivative-metal salt and poly (vinylidene fluoride) based derivative-metal salt. Specifically, the solid ion conductor film, the solid ion conductor material i 13 and the solid ion conductor material ii 23 may be made of the same material or different materials, but need to be able to satisfy ion conduction.
In the solid-state capacitor cell based on the composite material electrode, the first composite material capacitor electrode is made of a mixture of a first electrode active material and a solid-state ion conductor material, so that ions can enter the solid-state ion conductor material in the first composite material capacitor electrode through the solid-state ion conductor film, the ion permeability and the wettability between the solid-state ion conductor film and the first composite material capacitor electrode can be effectively improved, and the interface resistance between the solid-state ion conductor film and the first composite material capacitor electrode is reduced; similarly, the second composite material capacitor electrode is made of a mixture of a second electrode active material and a solid ion conductor material, ions can enter the solid ion conductor material in the second composite material capacitor electrode through the solid ion conductor film, so that the ion permeability and the wettability between the solid ion conductor film and the second composite material capacitor electrode can be effectively improved, and the interface resistance between the solid ion conductor film and the second composite material capacitor electrode is reduced; in summary, in the solid capacitor electric core based on the composite material electrode of the embodiment, the wettability between the solid ion conductor film and the electrode can be effectively improved, the interfacial resistance between the solid ion conductor film and the electrode can be effectively reduced, and the ion permeability is improved.
Example 2
Fig. 5 is a schematic structural diagram of a solid-state capacitor cell in accordance with embodiment 2 of the present invention. The solid-state capacitor cell based on composite material electrodes in the embodiment comprises at least one first composite material capacitor electrode 10 and at least one second composite material capacitor electrode 20. The first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 are arranged in a staggered mode, and a solid ion conductor film 30 is arranged between the adjacent first composite material capacitor electrode 10 and the adjacent second composite material capacitor electrode 20.
The first composite material capacitor electrode 10 of the present embodiment is made of a composition or a mixture of a first electrode active material 11 and a solid ion conductor material i 13; specifically, the first electrode active material 11 of the present embodiment is uniformly distributed in a granular shape, and the gaps of the first electrode active material granules are filled with the solid ion conductor material i 13. The molar ratio between the solid ion conductor material I13 and the first electrode active material 11 in the first composite material capacitor electrode 10 is 100% or less. The first composite material capacitor electrode is made of the mixture of the first electrode active material 11 and the solid ion conductor material I13, and the solid ion conductor material I13 mixed in the first composite material capacitor electrode 10 can be communicated with the solid ion conductor membrane 30 in an ion conduction mode, so that the ion permeability can be effectively improved, and the interface resistance between the solid state and the electrode can be reduced. The solid ion conductor material i 13 in this embodiment is made of the same material as the solid ion conductor film 30, and certainly, different materials may be used between the solid ion conductor material i 13 and the solid ion conductor film 30, as long as the effects of enhancing the wettability between the solid ion conductor film 30 and the first composite material capacitor electrode 10, reducing the interface resistance between the solid ion conductor film 30 and the first composite material capacitor electrode 10, and increasing the ion permeability can be achieved.
The second composite material capacitor electrode 20 of the present embodiment is made of a composite or a mixture of a second electrode active material 21 and a solid ion conductor material ii 23; specifically, the second electrode active material 21 of the present embodiment is uniformly distributed in a granular shape, and the gaps of the second electrode active material granules are filled with the solid ion conductor material ii 23. The molar ratio between the solid ion conductor material II 23 and the second electrode active material 21 in the second composite material capacitor electrode 20 is less than or equal to 100%. The second composite material capacitor electrode 20 is made of a mixture of the second electrode active material 21 and the solid ion conductor material II 23, and the solid ion conductor material II 23 mixed in the second composite material capacitor electrode 20 can be communicated with the solid ion conductor membrane 30 in an ion conduction mode, so that the ion permeability can be effectively improved, and the interface resistance between the solid state and the electrode can be reduced. The solid ion conductor material ii 23 of this embodiment is made of the same material as the solid ion conductor film 30, and of course, it is only necessary to enhance the wettability between the solid ion conductor film 30 and the first composite material capacitive electrode 10 and the second composite material capacitive electrode 20, reduce the interface resistance between the solid ion conductor film 30 and the first composite material capacitive electrode 10 and the second composite material capacitive electrode 20, and increase the ion permeability.
Further, the number N of the first composite capacitive electrodes 10 and the number M of the second composite capacitive electrodes 20 satisfy:
m ═ N, or, | M-N | ═ 1.
Specifically, the number N of the first composite capacitive electrodes 10 in the present embodiment is 1, and the number M of the second composite capacitive electrodes 20 is 2, and satisfies: M-N ═ 1. Two second composite capacitive electrodes 20 are disposed on both sides of the first composite capacitive electrode 10, respectively. The two second composite material capacitor electrodes 20 of this embodiment can be electrically connected by an internal circuit or an external circuit, which will not be described in detail.
Further, a first groove 12 is provided on a side surface of the first composite capacitive electrode 10 of this embodiment, and the solid ion conductor film 30 attached to the corresponding side surface of the first composite capacitive electrode 10 is embedded in the first groove 12. The second composite material capacitor electrode 20 is provided with a second groove 22 on the side surface thereof, and the solid ion conductor film 30 attached to the corresponding second composite material capacitor electrode 20 on the side surface thereof is embedded in the second groove 22. Specifically, the first composite capacitor electrode 10 of the present embodiment is provided with first grooves 12 on both side surfaces, and the two second composite capacitor electrodes 20 are provided with second grooves 22 on one side surface facing the first composite capacitor electrode 10.
Of course, it is also possible to provide the first embedding hole on the side surface of the first composite capacitive electrode 10 or to provide the side surface of the first composite capacitive electrode 10 as a plane; similarly, the second embedding hole may be disposed on the side surface of the second composite material capacitor electrode 20, or the side surface of the second composite material capacitor electrode 20 may be disposed as a plane, which is not described in detail one by one.
Other structures of this embodiment are the same as those of embodiment 1, and are not described in detail.
Example 3
Fig. 7 is a schematic structural diagram of a solid-state capacitor cell in embodiment 3 of the present invention based on a composite material electrode. The solid-state capacitor cell based on composite material electrodes in the embodiment comprises at least one first composite material capacitor electrode 10 and at least one second composite material capacitor electrode 20. The first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 are arranged in a staggered mode, and a solid ion conductor film 30 is arranged between the adjacent first composite material capacitor electrode 10 and the adjacent second composite material capacitor electrode 20.
The first composite material capacitor electrode 10 of the present embodiment is made of a composition or a mixture of a first electrode active material 11 and a solid ion conductor material i 13; specifically, the first electrode active material 11 of the present embodiment is uniformly distributed in a granular shape, and the gaps of the first electrode active material granules are filled with the solid ion conductor material i 13. The molar ratio between the solid ion conductor material I13 and the first electrode active material 11 in the first composite material capacitor electrode 10 is 100% or less. The first composite material capacitor electrode is made of the mixture of the first electrode active material 11 and the solid ion conductor material I13, and the solid ion conductor material I13 mixed in the first composite material capacitor electrode 10 can be communicated with the solid ion conductor membrane 30 in an ion conduction mode, so that the ion permeability can be effectively improved, and the interface resistance between the solid state and the electrode can be reduced. The solid ion conductor material i 13 in this embodiment is made of the same material as the solid ion conductor film 30, and certainly, different materials may be used between the solid ion conductor material i 13 and the solid ion conductor film 30, as long as the effects of enhancing the wettability between the solid ion conductor film 30 and the first composite material capacitor electrode 10, reducing the interface resistance between the solid ion conductor film 30 and the first composite material capacitor electrode 10, and increasing the ion permeability can be achieved.
The second composite material capacitor electrode 20 of the present embodiment is made of a composite or a mixture of a second electrode active material 21 and a solid ion conductor material ii 23; specifically, the second electrode active material 21 of the present embodiment is uniformly distributed in a granular shape, and the gaps of the second electrode active material granules are filled with the solid ion conductor material ii 23. The molar ratio between the solid ion conductor material II 23 and the second electrode active material 21 in the second composite material capacitor electrode 20 is less than or equal to 100%. The second composite material capacitor electrode 20 is made of a mixture of the second electrode active material 21 and the solid ion conductor material II 23, and the solid ion conductor material II 23 mixed in the second composite material capacitor electrode 20 can be communicated with the solid ion conductor membrane 30 in an ion conduction mode, so that the ion permeability can be effectively improved, and the interface resistance between the solid state and the electrode can be reduced. The solid ion conductor material ii 23 of this embodiment is made of the same material as the solid ion conductor film 30, and of course, it is only necessary to enhance the wettability between the solid ion conductor film 30 and the first composite material capacitive electrode 10 and the second composite material capacitive electrode 20, reduce the interface resistance between the solid ion conductor film 30 and the first composite material capacitive electrode 10 and the second composite material capacitive electrode 20, and increase the ion permeability.
Further, the number N of the first composite capacitive electrodes 10 and the number M of the second composite capacitive electrodes 20 satisfy:
m ═ N, or, | M-N | ═ 1.
Specifically, the number N of the first composite capacitive electrodes 10 in the present embodiment is 2, and the number M of the second composite capacitive electrodes 20 is 1, and satisfies the following requirements: N-M ═ 1. Two first composite capacitive electrodes 10 are disposed on both sides of the second composite capacitive electrode 20. The two first composite material capacitor electrodes 10 of this embodiment can be electrically connected by an internal circuit or an external circuit, which will not be described in detail.
Further, the side surface of the first composite capacitive electrode 10 of the present embodiment is a plane, and the solid ion conductor film 30 is attached to the side surface of the first composite capacitive electrode 10. Of course, in some embodiments, a first groove may be provided on a side surface of the first composite capacitive electrode 10, and the solid ion conductor film 30 attached to the corresponding side surface of the first composite capacitive electrode 10 is embedded in the first groove. In some embodiments, first embedding holes may also be arranged in an array on the side surface of the first composite material capacitor electrode 10, and the solid ion conductor film 30 attached to the corresponding side surface of the first composite material capacitor electrode 10 is embedded in the first embedding holes.
The second composite capacitive electrode 20 of this embodiment has a planar side surface, and the solid ion conductor film 30 is attached to the side surface of the second composite capacitive electrode 20. When hot, in some embodiments, a second recess may be provided in the side of the second composite capacitive electrode 20, into which the solid ion conductor film 30 is embedded in conformity with the corresponding side of the second composite capacitive electrode 20. In some embodiments, second embedding holes may also be arranged in the side surface of the second composite material capacitor electrode 20 in an array, and the solid ion conductor film 30 attached to the corresponding side surface of the second composite material capacitor electrode 20 is embedded in the second embedding holes.
Other structures of this embodiment are the same as those of embodiment 1, and are not described in detail.
Example 4
Fig. 9 is a schematic structural diagram of a solid-state capacitor cell in accordance with embodiment 4 of the present invention. The solid-state capacitor cell based on composite material electrodes in the embodiment comprises at least one first composite material capacitor electrode 10 and at least one second composite material capacitor electrode 20. The first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 are arranged in a staggered mode, and a solid ion conductor film 30 is arranged between the adjacent first composite material capacitor electrode 10 and the adjacent second composite material capacitor electrode 20.
The first composite material capacitor electrode 10 of the present embodiment is made of a composition or a mixture of a first electrode active material 11 and a solid ion conductor material i 13; specifically, the first electrode active material 11 of the present embodiment is uniformly distributed in a granular shape, and the gaps of the first electrode active material granules are filled with the solid ion conductor material i 13. The molar ratio between the solid ion conductor material I13 and the first electrode active material 11 in the first composite material capacitor electrode 10 is 100% or less. The first composite material capacitor electrode is made of the mixture of the first electrode active material 11 and the solid ion conductor material I13, and the solid ion conductor material I13 mixed in the first composite material capacitor electrode 10 can be communicated with the solid ion conductor membrane 30 in an ion conduction mode, so that the ion permeability can be effectively improved, and the interface resistance between the solid state and the electrode can be reduced. The solid ion conductor material i 13 in this embodiment is made of the same material as the solid ion conductor film 30, and certainly, different materials may be used between the solid ion conductor material i 13 and the solid ion conductor film 30, as long as the effects of enhancing the wettability between the solid ion conductor film 30 and the first composite material capacitor electrode 10, reducing the interface resistance between the solid ion conductor film 30 and the first composite material capacitor electrode 10, and increasing the ion permeability can be achieved.
The second composite material capacitor electrode 20 of the present embodiment is made of a composite or a mixture of a second electrode active material 21 and a solid ion conductor material ii 23; specifically, the second electrode active material 21 of the present embodiment is uniformly distributed in a granular shape, and the gaps of the second electrode active material granules are filled with the solid ion conductor material ii 23. The molar ratio between the solid ion conductor material II 23 and the second electrode active material 21 in the second composite material capacitor electrode 20 is less than or equal to 100%. The second composite material capacitor electrode 20 is made of a mixture of the second electrode active material 21 and the solid ion conductor material II 23, and the solid ion conductor material II 23 mixed in the second composite material capacitor electrode 20 can be communicated with the solid ion conductor membrane 30 in an ion conduction mode, so that the ion permeability can be effectively improved, and the interface resistance between the solid state and the electrode can be reduced. The solid ion conductor material ii 23 of this embodiment is made of the same material as the solid ion conductor film 30, and of course, it is only necessary to enhance the wettability between the solid ion conductor film 30 and the first composite material capacitive electrode 10 and the second composite material capacitive electrode 20, reduce the interface resistance between the solid ion conductor film 30 and the first composite material capacitive electrode 10 and the second composite material capacitive electrode 20, and increase the ion permeability.
Further, the number N of the first composite capacitive electrodes 10 and the number M of the second composite capacitive electrodes 20 satisfy:
m ═ N, or, | M-N | ═ 1.
Specifically, the number N of the first composite material capacitor electrodes 10 in this embodiment is greater than or equal to 2, the number M of the second composite material capacitor electrodes 20 is greater than or equal to 2, and the number of the first composite material capacitor electrodes 10 and the number of the second composite material capacitor electrodes 20 may be set according to actual needs, and will not be described in detail. All the second composite material capacitor electrodes 20 of the present embodiment can be electrically connected to each other by an internal circuit or an external circuit, and all the first composite material capacitor electrodes 10 can be electrically connected to each other by an internal circuit or an external circuit.
When N is equal to M, the two electrodes at the two ends are the first composite capacitance electrode 10 and the second composite capacitance electrode 20, respectively, as shown in fig. 9;
when N-M is 1, both electrodes at both ends are the first composite capacitance electrode 10, as shown in fig. 10;
when M-N is 1, both electrodes at both ends are the second composite capacitance electrode 20, as shown in fig. 11.
Other structures of this embodiment are the same as those of embodiment 1, and are not described in detail.
Example 5
Fig. 12 is a schematic structural diagram of a solid-state stacked capacitor cell based on a composite material electrode according to the present invention. The solid-state laminated capacitor cell based on the composite material electrode in the embodiment includes a soft package body 101, and at least two solid-state laminated capacitor cells 100 of the embodiment are combined together in the soft package body 101. Specifically, the number of the solid capacitor cells 100 arranged in the soft package body 101 may be 2, 3, or more than 3, which will not be described in detail.
Specifically, in two adjacent solid-state capacitance battery cells 100, a first composite capacitance electrode 10 at an end of one of the solid-state capacitance battery cells 100 is disposed adjacent to a second composite capacitance electrode 20 at an end of the other solid-state capacitance battery cell 100, and an electronically conductive but ionically isolated bipolar current collecting plate 102 is disposed between the adjacent first composite capacitance electrode 10 and the adjacent second composite capacitance electrode 20. By combining a plurality of solid-state capacitor cells 100 into a solid-state stacked capacitor cell, the output voltage of the solid-state stacked capacitor cell can be effectively increased.
The two ends of the solid-state laminated capacitor cell of the embodiment are respectively provided with a first composite material capacitor electrode tab 14 and a second composite material capacitor electrode tab 24. Of course, a first composite capacitor electrode tab 14 may be disposed on the first composite capacitor electrode 10 of each solid-state capacitor cell 100, and a second composite capacitor electrode tab 24 may be disposed on the second composite capacitor electrode 20 of each solid-state capacitor cell 100, so that an external circuit is used to perform electric energy output control on the solid-state stacked capacitor cell, as shown in fig. 13.
Specifically, the structure of the solid-state stacked capacitor cell of the embodiment has a plurality of variations:
as shown in fig. 12 and 13, a schematic structural diagram of a solid-state laminated capacitor cell obtained by combining the solid-state capacitor cells 100 in embodiment 1 is shown, in which the number of the solid-state capacitor cells 100 in the solid-state laminated capacitor cell may be 2, 3, or more than 3, and in two adjacent solid-state capacitor cells 100, the first composite capacitor electrode 10 at the end of one solid-state capacitor cell 100 is disposed adjacent to the second composite capacitor electrode 20 at the end of the other solid-state capacitor cell 100, and an electronically conductive but ionically isolated bipolar current collecting plate 102 is disposed between the first composite capacitor electrode 10 and the second composite capacitor electrode 20.
By analogy, when the number N of the first composite material capacitor electrodes 10 in the solid capacitor cells 100 and the number M of the second composite material capacitor electrodes 20 satisfy that M is equal to or greater than 1, all the solid capacitor cells 100 are stacked in sequence at this time, in two adjacent solid capacitor cells 100, the first composite material capacitor electrode 10 at the end of one solid capacitor cell 100 is disposed adjacent to the second composite material capacitor electrode 20 at the end of the other solid capacitor cell 100, and a bipolar current collector 102 having electronic conduction and ionic isolation is disposed between the first composite material capacitor electrode 10 and the second composite material capacitor electrode 20.
As shown in fig. 14, a schematic structural diagram of a solid-state laminated capacitor cell formed by combining the solid-state capacitor cell 100 in example 2 and the solid-state capacitor cell 100 in example 3 is shown, in order to implement a structure in which the first composite capacitor electrode 10 at the end of one solid-state capacitor cell 100 and the second composite capacitor electrode 20 at the end of the other solid-state capacitor cell 100 are adjacently disposed in two adjacent solid-state capacitor cells 100, the solid-state capacitor cell 100 in example 2 and the solid-state capacitor cell 100 in example 3 are alternately laminated, so that the first composite capacitor electrode 10 at the end of one solid-state capacitor cell 100 and the second composite capacitor electrode 20 at the end of the other solid-state capacitor cell 100 are adjacently disposed in two adjacent solid-state capacitor cells 100, and an electronic capacitor is disposed between the first composite capacitor electrode 10 and the second composite capacitor electrode 20 that are adjacent to each other A conductive but ionically isolated bipolar current collector plate 102.
By analogy, when the number N of the first composite material capacitor electrodes 10 in the solid capacitor cell 100 and the number M of the second composite material capacitor electrodes 20 satisfy | M-N | ═ 1, the number N of the first composite material capacitor electrodes is greater than or equal to 1, and the number M of the second composite material capacitor electrodes is greater than or equal to 1, in two adjacent solid capacitor cells 100 at this time, the number N of the first composite material capacitor electrodes in one solid capacitor cell 100 and the number M of the second composite material capacitor electrodes satisfy N-M ═ 1, the number N of the first composite material capacitor electrodes in the other solid capacitor cell 100 and the number M of the second composite material capacitor electrodes satisfy M-N ═ 1, so as to ensure that in the two adjacent solid capacitor cells 100, the first composite material capacitor electrode 10 at the end of one solid capacitor cell 100 is adjacent to the second composite material capacitor electrode 20 at the end of the other solid capacitor cell 100, and an electronically conductive but ionically isolated bipolar current collector plate 102 is disposed between the adjacent first composite capacitive electrode 10 and second composite capacitive electrode 20.
Of course, when the number N of the first composite capacitance electrodes 10 and the number M of the second composite capacitance electrodes 20 in the solid-state capacitance cell 100 satisfy | M-N | ═ 1, the number N of the first composite capacitance electrodes is greater than or equal to 1, and the number M of the second composite capacitance electrodes is greater than or equal to 1, in the solid-state capacitance cell 100 including two types of structures, where N-M ═ 1 is satisfied between the number N of the first composite capacitance electrodes and the number M of the second composite capacitance electrodes of one type of solid-state capacitance cell 100, M-N ═ 1 is satisfied between the number N of the first composite capacitance electrodes and the number M of the second composite capacitance electrodes of another type of solid-state capacitance cell 100, between the two types of solid-state capacitance cells 100, at least one solid-state capacitance cell 100 satisfying N ═ M between the number N of the first composite capacitance electrodes and the number M of the second composite capacitance electrodes may be stacked, only two adjacent solid-state capacitor cells 100 need to be ensured, wherein the first composite capacitor electrode 10 at the end of one solid-state capacitor cell 100 is arranged adjacent to the second composite capacitor electrode 20 at the end of the other solid-state capacitor cell 100, and the electronically conductive and ionically isolated bipolar current collecting plate 102 is arranged between the first composite capacitor electrode 10 and the second composite capacitor electrode 20, which are adjacent to each other, so that description is omitted.
Example 6
Fig. 15 is a schematic structural diagram of a solid-state composite capacitor cell in accordance with embodiment 6 of the present invention. The solid-state composite capacitor electric core based on the composite material electrode in the embodiment includes a soft bag body 103, and at least two solid-state capacitor electric cores 100 which are compounded together are arranged in the soft bag body 103.
Specifically, in two adjacent solid-state capacitor cells 100, a first composite capacitor electrode 10 at an end of one of the solid-state capacitor cells 100 is disposed adjacent to a first composite capacitor electrode 10 at an end of the other solid-state capacitor cell 100, the two adjacent first composite capacitor electrodes 10 are combined together, or an electronically conductive and ionically isolated bipolar current collecting plate 104 is disposed between the two adjacent first composite capacitor electrodes 10, or an electronically insulating and ionically isolated insulating diaphragm 105 is disposed between the two adjacent first composite capacitor electrodes 10; or, the second composite capacitive electrode 20 at the end of one of the solid capacitive cells 100 is disposed adjacent to the second composite capacitive electrode 20 at the end of another of the solid capacitive cells 100; the two adjacent second composite material capacitance electrodes 20 are compounded together, or an electronically conductive and ionically isolated bipolar current collecting plate 104 is arranged between the two adjacent second composite material capacitance electrodes 20, or an electronically insulating and ionically isolated insulating diaphragm 105 is arranged between the two adjacent second composite material capacitance electrodes 20.
As shown in fig. 15, which is a schematic structural diagram of the capacitor cell 100 in example 1 when at least two solid capacitor cells 100 are combined together, in two adjacent solid capacitor cells 100, a first composite capacitor electrode 10 at an end of one solid capacitor cell 100 is disposed adjacent to a first composite capacitor electrode 10 at an end of another solid capacitor cell 100, and the two adjacent first composite capacitor electrodes 10 are combined together; or, the second composite capacitive electrode 20 at the end of one of the solid capacitive cells 100 is disposed adjacent to the second composite capacitive electrode 20 at the end of another of the solid capacitive cells 100; the two adjacent second composite capacitive electrodes 20 are combined together.
As shown in fig. 16, which is a schematic structural diagram of at least two solid-state capacitance battery cells 100 in example 1 when they are combined together, in two adjacent solid-state capacitance battery cells 100, a first composite capacitance electrode 10 at an end of one solid-state capacitance battery cell 100 is disposed adjacent to a first composite capacitance electrode 10 at an end of another solid-state capacitance battery cell 100, an electronically conductive and ionically isolated bipolar current collecting plate 104 is disposed between the two adjacent first composite capacitance electrodes 10, or an electronically insulating and ionically isolated insulating diaphragm 105 is disposed between the two adjacent first composite capacitance electrodes 10; or, the second composite capacitive electrode 20 at the end of one of the solid capacitive cells 100 is disposed adjacent to the second composite capacitive electrode 20 at the end of another of the solid capacitive cells 100; an electronically conductive and ionically isolated bipolar current collector plate 104 is disposed between the two adjacent second composite capacitive electrodes 20 or an electronically insulating and ionically isolated insulating membrane 105 is disposed between the two adjacent second composite capacitive electrodes 20.
By analogy, when the number N of the first composite material capacitor electrodes 10 in the solid capacitor cell 100 and the number M of the second composite material capacitor electrodes 20 satisfy N ═ M, at least two solid capacitor cells 100 may be combined together to form a solid composite capacitor cell in the manner shown in fig. 15 and fig. 16.
Fig. 17 is a schematic structural diagram of at least two solid-state capacitor cells 100 in embodiment 2 when they are combined together. In two adjacent solid-state capacitor cells 100, the second composite capacitor electrode 20 at the end of one solid-state capacitor cell 100 is disposed adjacent to the second composite capacitor electrode 20 at the end of the other solid-state capacitor cell 100; the two adjacent second composite capacitive electrodes 20 are combined together.
Fig. 18 is a schematic structural diagram of at least two solid-state capacitor cells 100 in embodiment 3 when they are combined together. In two adjacent solid-state capacitor cells 100, the second composite capacitor electrode 20 at the end of one solid-state capacitor cell 100 is disposed adjacent to the second composite capacitor electrode 20 at the end of the other solid-state capacitor cell 100; the two adjacent second composite capacitive electrodes 20 are combined together.
Fig. 19 is a schematic structural diagram of at least two solid-state capacitor cells 100 in embodiment 2 when they are combined together. In two adjacent solid-state capacitor cells 100, the second composite capacitor electrode 20 at the end of one solid-state capacitor cell 100 is disposed adjacent to the second composite capacitor electrode 20 at the end of the other solid-state capacitor cell 100; an electronically conductive and ionically isolated bipolar current collector plate 104 is disposed between the two adjacent second composite capacitive electrodes 20 or an electronically insulating and ionically isolated insulating membrane 105 is disposed between the two adjacent second composite capacitive electrodes 20.
Fig. 20 is a schematic structural diagram of at least two solid-state capacitor cells 100 in embodiment 3 when they are combined together. In two adjacent solid-state capacitor cells 100, the second composite capacitor electrode 20 at the end of one solid-state capacitor cell 100 is disposed adjacent to the second composite capacitor electrode 20 at the end of the other solid-state capacitor cell 100; an electronically-insulating and ionically-isolating bipolar current collector plate 104 is arranged between the two adjacent second composite capacitive electrodes 20 or an electronically-insulating and ionically-isolating insulating diaphragm 105 is arranged between the two adjacent first composite capacitive electrodes 10.
By analogy, when the number N of the first composite capacitive electrodes 10 in the solid-state capacitive cell 100 and the number M of the second composite capacitive electrodes 20 satisfy | M-N | ═ 1, at least two solid-state capacitive cells 100 may be composited together to form a solid-state composite capacitive cell in a manner as shown in fig. 17 to 20.
In this embodiment, all the first composite material capacitor electrodes 10 of each solid-state capacitor cell 100 are provided with first composite material capacitor electrode tabs 14, and all the second composite material capacitor electrodes 20 are provided with second composite material capacitor electrode tabs 24.
Example 7
Fig. 21 is a schematic structural diagram of a solid-state composite capacitor cell in accordance with embodiment 7 of the present invention. The solid-state composite capacitor electric core based on the composite material electrode in the embodiment includes a soft bag body 103, and at least two solid-state capacitor electric cores 100 which are compounded together are arranged in the soft bag body 103.
In two adjacent solid-state capacitor electric cores 100, a first composite material capacitor electrode 10 at an end of one of the solid-state capacitor electric cores 100 is disposed adjacent to a second composite material capacitor electrode 20 at an end of the other solid-state capacitor electric core 100, and an insulating diaphragm 106 that is electronically insulated and ion-isolated is disposed between the adjacent first composite material capacitor electrode 10 and the adjacent second composite material capacitor electrode 20, each of the solid-state capacitor electric cores 100 can be controlled independently to output electric energy externally, and of course, the plurality of solid-state capacitor electric cores 100 can be controlled by an external circuit to output electric energy externally in series, in parallel, or in series-parallel.
Fig. 21 is a schematic structural diagram of at least two solid-state capacitor cells 100 in embodiment 1 when they are combined together;
fig. 22 is a schematic structural diagram of a composite structure of at least two solid-state capacitor cells 100 in embodiments 2 and 3.
In this embodiment, all the first composite material capacitor electrodes 10 of each solid-state capacitor cell 100 are provided with first composite material capacitor electrode tabs 14, and all the second composite material capacitor electrodes 20 are provided with second composite material capacitor electrode tabs 24.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (11)
1. The utility model provides a solid state electric capacity electricity core based on combined material electrode which characterized in that:
comprising at least one first composite capacitive electrode (10) and at least one second composite capacitive electrode (20);
the first composite material capacitor electrode (10) and the second composite material capacitor electrode (20) are arranged in a staggered mode;
a solid ion conductor film (30) is arranged between the adjacent first composite material capacitance electrode (10) and the second composite material capacitance electrode (20);
the first composite material capacitor electrode (10) is made of a composition or a mixture of a first electrode active material (11) and a solid ion conductor material I (13);
the second composite material capacitance electrode (20) is made of a composite or a mixture of a second electrode active material (21) and a solid ion conductor material II (23).
2. The composite electrode-based solid state capacitive cell of claim 1, wherein:
the number N of the first composite material capacitance electrodes (10) and the number M of the second composite material capacitance electrodes (20) satisfy:
m ═ N, or, | M-N | ═ 1.
3. The composite electrode-based solid state capacitive cell of claim 1, wherein:
the side surface of the first composite material capacitance electrode (10) is a plane, and the solid ion conductor film (30) is attached to the side surface of the first composite material capacitance electrode (10); or the like, or, alternatively,
a first groove is formed in the side face of the first composite material capacitor electrode (10), and the solid ion conductor film (30) attached to the corresponding side face of the first composite material capacitor electrode (10) is embedded into the first groove; or the like, or, alternatively,
the side surface of the first composite material capacitor electrode (10) is provided with first embedding holes in an array mode, and the solid ion conductor film (30) attached to the corresponding side surface of the first composite material capacitor electrode (10) is embedded into the first embedding holes.
4. The composite electrode-based solid state capacitive cell of claim 3, wherein:
the width of the first groove is gradually increased along the direction from the groove bottom to the groove opening;
in two radial sections I cut on the same first embedding hole by any two radial sections perpendicular to the axis of the first embedding hole, the geometric dimension of the radial section I on one side close to the bottom of the first embedding hole is smaller than or equal to that of the radial section I on one side close to the hole opening of the first embedding hole.
5. The composite electrode-based solid state capacitive cell of claim 1, wherein:
the side surface of the second composite material capacitance electrode (20) is a plane, and the solid ion conductor film (30) is attached to the side surface of the second composite material capacitance electrode (20); or the like, or, alternatively,
a second groove is formed in the side face of the second composite material capacitor electrode (20), and the solid ion conductor film (30) attached to the corresponding side face of the second composite material capacitor electrode (20) is embedded into the second groove; or the like, or, alternatively,
second embedding holes are formed in the side face of the second composite material capacitor electrode (20) in an array mode, and the solid ion conductor film (30) attached to the corresponding side face of the second composite material capacitor electrode (20) is embedded into the second embedding holes.
6. The composite electrode-based solid state capacitive cell of claim 5, wherein:
the width of the second groove is gradually increased along the direction from the groove bottom to the groove opening;
in two radial sections II obtained by cutting any two radial sections perpendicular to the axis of the second embedded hole on the same second embedded hole, the geometric dimension of the radial section II close to the bottom side of the second embedded hole is smaller than or equal to that of the radial section II close to the orifice side of the second embedded hole.
7. The composite electrode-based solid state capacitive cell of claim 1, wherein:
the first capacitance electrode active material (11) and the second capacitance electrode active material (21) are made of one or a mixture of at least two of lithium iron phosphate, ternary materials, sulfur-containing conductive materials, porous carbon layer air capacitance electrodes containing metal or organic materials, layered metal oxide materials, oxygen-containing organic polymer materials, metal lithium, metal sodium, metal aluminum, metal magnesium, metal potassium, graphene, hard carbon, silicon oxide and silicon simple substances;
the solid ion conductor membrane (30) forms good electrode/electrolyte interfaces with the composite material anode and the composite material cathode respectively by adopting a hot-pressing physical method or a chemical method;
the solid ion conductor membrane (30), the solid ion conductor material I (13) and the solid ion conductor material II (23) are made of one or a mixture of at least two of gel, oxide, sulfide and organic polymer;
the gel is an electrolyte composed of ternary components of a high molecular compound, a metal salt and/or a solvent, and is prepared by adopting one or a mixture of at least two of but not limited to poly (vinyl alcohol) based derivative-acid or alkali or metal salt, poly (benzimidazole) based derivative-metal salt-organic solvent, poly (vinylidene fluoride) based derivative-metal salt-organic solvent, poly (ethylene oxide) based derivative-metal salt-organic solvent and poly (methyl methacrylate) based derivative-metal salt-organic solvent;
the oxide includes, but is not limited to sodium super ion conductor (NASICON) type-LiTi2(PO4)3And derivatives thereof, lithium super ion conductor (LISICON) type-Li14Zn(GeO4)4Derivatives thereof and Garnet (Garnet) -type-Li7La3Zr2O12And derivatives thereof;
the sulfide includes but is not limited to Li10GeP2S12、Li2S-P2S5And their derivatives, halides, hydrides and lithium phosphorus oxynitrides;
the organic polymer is prepared from one or a mixture of at least two of poly (ethylene oxide) (PEO) based derivative-metal salt, poly (benzimidazole) based derivative-metal salt and poly (vinylidene fluoride) based derivative-metal salt.
8. The composite electrode-based solid state capacitive cell of claim 1, wherein:
the molar ratio between the solid-state ion conductor material I (13) and the first electrode active material (11) in the first composite material capacitor electrode (10) is less than or equal to 100%;
the molar ratio between the solid ion conductor material II (23) and the second electrode active material (21) in the second composite material capacitor electrode (20) is less than or equal to 100%.
9. The composite electrode-based solid state capacitive cell of any one of claims 1 to 8, wherein:
the first electrode active material (11) is uniformly distributed in a granular shape, and gaps of the first electrode active material granules are filled with the solid ion conductor material I (13);
the second electrode active material (21) is uniformly distributed in a granular shape, and gaps of the second electrode active material granules are filled with the solid ion conductor material II (23).
10. The utility model provides a solid-state stromatolite electric capacity electricity core based on combined material electrode which characterized in that:
comprising a flexible package body (101), at least two solid-state capacitor cells (100) according to any one of claims 1 to 9 being combined together in the flexible package body (101);
in two adjacent solid-state capacitor cells (100), a first composite capacitor electrode (10) at one end of one solid-state capacitor cell (100) is arranged adjacent to a second composite capacitor electrode (20) at the other end of the other solid-state capacitor cell (100), and an electronically conductive and ionically isolated bipolar collector plate (102) is arranged between the adjacent first composite capacitor electrode (10) and the adjacent second composite capacitor electrode (20).
11. The utility model provides a solid-state composite capacitance electricity core based on combined material electrode which characterized in that:
comprising a flexible package body (103), at least two solid-state capacitor cells (100) of any one of claims 1 to 9 being combined together being arranged in the flexible package body (103);
in two adjacent solid-state capacitor cells (100),
the first composite material capacitor electrode (10) at the end of one solid capacitor cell (100) is arranged adjacent to the first composite material capacitor electrode (10) at the end of the other solid capacitor cell (100), the two adjacent first composite material capacitor electrodes (10) are combined together or an electronically conductive and ionically isolated bipolar collector plate (104) is arranged between the two adjacent first composite material capacitor electrodes (10) or an electronically insulating and ionically isolated insulating diaphragm (105) is arranged between the two adjacent first composite material capacitor electrodes (10);
or the like, or, alternatively,
wherein the second composite capacitive electrode (20) at the end of one of the solid capacitive cells (100) is disposed adjacent to the second composite capacitive electrode (20) at the end of the other of the solid capacitive cells (100); the two adjacent second composite material capacitance electrodes (20) are compounded together, or an electronically conductive and ionically isolated bipolar collector plate (104) is arranged between the two adjacent second composite material capacitance electrodes (20), or an electronically insulating and ionically isolated insulating diaphragm (105) is arranged between the two adjacent second composite material capacitance electrodes (20);
or the like, or, alternatively,
the first composite material capacitor electrode (10) at the end of one solid capacitor cell (100) is arranged adjacent to the second composite material capacitor electrode (20) at the end of the other solid capacitor cell (100), and an insulating diaphragm (106) which is electrically insulated and ion-isolated is arranged between the adjacent first composite material capacitor electrode (10) and the adjacent second composite material capacitor electrode (20).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910528695.3A CN112103088A (en) | 2019-06-18 | 2019-06-18 | Solid-state capacitor cell, laminated capacitor cell and composite power capacitor cell based on composite material electrode |
| PCT/CN2020/096012 WO2020253638A1 (en) | 2019-06-18 | 2020-06-15 | Composite electrode-based solid cell, laminated cell, composite cell and composite power cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910528695.3A CN112103088A (en) | 2019-06-18 | 2019-06-18 | Solid-state capacitor cell, laminated capacitor cell and composite power capacitor cell based on composite material electrode |
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| CN112103088A true CN112103088A (en) | 2020-12-18 |
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| CN210692370U (en) * | 2019-06-18 | 2020-06-05 | 重庆九环新越新能源科技发展有限公司 | Solid-state capacitor cell, laminated capacitor cell and composite power capacitor cell |
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2019
- 2019-06-18 CN CN201910528695.3A patent/CN112103088A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102598173A (en) * | 2009-08-07 | 2012-07-18 | Oc欧瑞康巴尔斯公司 | All solid-state electrochemical double layer supercapacitor |
| CN104616913A (en) * | 2009-08-07 | 2015-05-13 | Oc欧瑞康巴尔斯公司 | All solid-state electrochemical double layer supercapacitor |
| CN208637537U (en) * | 2018-01-11 | 2019-03-22 | 安徽威格路新能源科技有限公司 | A kind of solid state battery of low interfacial resistance |
| CN108586664A (en) * | 2018-04-24 | 2018-09-28 | 华中科技大学 | A kind of method and the capacitor preparing the stretchable ultracapacitor of full hydrogel |
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