CN112103088A - Solid-state capacitor cell, laminated capacitor cell and composite power capacitor cell based on composite material electrode - Google Patents

Abstract

A solid-state capacitor cell based on composite material electrodes, comprising at least one first composite material capacitor electrode and at least one second composite material capacitor electrode; the first composite material capacitor electrode and the second composite material capacitor electrode are alternately arranged; A solid ion conductor membrane is arranged between the adjacent first composite material capacitor electrodes and the second composite material capacitor electrodes; the first composite material capacitor electrodes are made of a mixture of the first electrode active material and the solid ion conductor material I; the second composite material capacitor electrode is made of The material capacitor electrode is made of a mixture of the second electrode active material and the solid ionic conductor material II. The invention also discloses a solid laminated capacitor cell based on the composite material electrode and a solid composite capacitor cell based on the composite material electrode. The solid capacitor cell based on the composite material electrode of the present invention can not only meet the requirements of energy storage, but also can effectively enhance the wettability between the solid ion conductor film and the electrode, and can effectively reduce the amount of friction between the solid ion conductor film and the electrode. Interface resistance, improve ion permeability.

Description

Solid-state capacitor cells, laminated capacitor cells and composite dynamic capacitors based on composite electrodes force capacitor cell

technical field

The invention belongs to the technical field of energy storage devices, in particular to a solid capacitor cell, a laminated capacitor cell and a composite power capacitor cell based on a composite material electrode.

Background technique

Solid state capacitors are a type of capacitive technology. Different from lithium-ion capacitors and lithium-ion polymer capacitors that are commonly used today, solid-state capacitors are capacitors that use solid electrodes and solid electrolytes. Traditional liquid lithium capacitors are also vividly called "rocking chair capacitors" by scientists. The two ends of the rocking chair are the positive and negative poles of the capacitor, and the middle is the electrolyte (liquid). The lithium ion is like an excellent athlete, running back and forth between the two ends of the rocking chair. During the movement of the lithium ion from the positive electrode to the negative electrode and then to the positive electrode, the charging and discharging process of the capacitor is completed. The principle of solid-state capacitors is the same, except that the electrolyte is solid, with a density and structure that allows more charged ions to gather at one end, conduct larger currents, and increase the capacitance. Therefore, for the same amount of electricity, the volume of solid-state capacitors will become smaller. Not only that, since there is no electrolyte in the solid capacitor, the storage will become easier. When using it on large equipment such as automobiles, there is no need to add additional cooling pipes, electronic controls, etc., which not only saves costs, but also effectively reduces the cost. weight.

Although the existing solid capacitors can meet the requirements to a certain extent, they still have the following shortcomings:

1) The bonding 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 relatively large.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to provide a solid capacitor cell, a laminated capacitor cell and a composite dynamic capacitor cell based on a composite material electrode, which can effectively improve the wettability between the solid ionic conductor membrane and the electrode, And can effectively reduce the interface resistance between the solid ion conductor film and the electrode, and improve the ion permeability.

To achieve the above object, the present invention provides the following technical solutions:

The present invention first proposes a solid capacitor cell based on a composite material electrode,

including at least one first composite capacitor electrode and at least one second composite capacitor electrode;

The first composite material capacitor electrodes and the second composite material capacitor electrodes are alternately arranged;

A solid-state ion conductor membrane is arranged between the adjacent first composite material capacitor electrodes and the second composite material capacitor electrodes;

The first composite capacitor electrode is made of the composite or mixture of the first electrode active material and the solid ionic conductor material I;

The second composite material capacitor electrode is made of a composite or a mixture of the second electrode active material and the solid-state ion conductor material II.

Further, the number N of the first composite material capacitor electrodes and the number M of the second composite material capacitor electrodes satisfy:

M=N, or, |M-N|=1.

Further, the side surface of the first composite material capacitor electrode is flat, and the solid ion conductor film is attached to the side surface of the first composite material capacitor electrode; or,

The side surface of the first composite capacitor electrode is provided with a first groove, and the solid ion conductor film attached to the side surface of the corresponding first composite capacitor electrode is embedded in the first groove; or ,

The side surfaces of the first composite material capacitor electrodes (10) are arrayed with first embedded holes, and the solid ion conductor films attached to the side surfaces of the corresponding first composite material capacitor electrodes are embedded in the first embedded holes. inside the hole.

Further, the width of the first groove gradually increases along the direction from the groove bottom to the notch;

In any two radial cross-sections perpendicular to the axis of the first inserting hole, in the two radial cross-sections I cut from the same first inserting hole, the diameter of the side close to the bottom of the first inserting hole is The geometrical dimension of the directional section I is smaller than or equal to the geometrical dimension of the radial section I on the side close to the first insert hole orifice.

Further, the side surface of the second composite material capacitor electrode is flat, and the solid ion conductor film is attached to the side surface of the second composite material capacitor electrode; or,

The side surface of the second composite capacitor electrode is provided with a second groove, and the solid ion conductor film attached to the side surface of the corresponding second composite capacitor electrode is embedded in the second groove; or ,

A second embedded hole is arrayed on the side surface of the second composite capacitor electrode, and the solid ion conductor film attached to the side surface of the corresponding second composite capacitor electrode is embedded in the second embedded hole.

Further, the width of the second groove gradually increases along the direction from the groove bottom to the notch;

In any two radial cross-sections perpendicular to the axis of the second inserting hole in two radial sections II cut from the same second inserting hole, the diameter of the side close to the bottom of the second inserting hole The geometric dimension of the directional section II is smaller than or equal to the geometric dimension of the radial section II on the side close to the second insert hole orifice.

Further, the first capacitor electrode active material and the second capacitor electrode active material adopt but are not limited to lithium iron phosphate, ternary material, sulfur-containing conductive material, porous carbon layer air capacitor electrode containing metal or organic material, layer One or at least two of 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 mixture;

The solid-state ion conductor membrane forms a good electrode/electrolyte interface with the composite material positive electrode and the composite material negative electrode respectively by a hot-pressing physical method or a chemical method.

The solid ion conductor membrane, solid ion conductor material I and solid ion conductor material II are made of but not limited to one or a mixture of at least two of gels, oxides, sulfides and organic polymers;

The gel is an electrolyte consisting of a polymer compound-metal salt and/or a solvent ternary component, using but not limited to poly(vinyl alcohol)-based derivatives-acid or alkali or metal salt, poly(benzimidazole) base derivative-metal salt-organic solvent, poly(vinylidene fluoride) base derivative-metal salt-organic solvent, poly(ethylene oxide) base derivative-metal salt-organic solvent and poly(methyl methacrylate) ) base derivative-metal salt-organic solvent one or a mixture of at least two;

The oxides include but are not limited to sodium superion conductor (NASICON) type-LiTi ₂ (PO ₄ ) ₃ and its derivatives, lithium superion conductor (LISICON) type-Li ₁₄ Zn(GeO ₄ ) ₄ and its derivatives And garnet (Garnet) type-Li ₇ La ₃ Zr ₂ O ₁₂ and its derivatives;

The sulfides include but are not limited to Li ₁₀ GeP ₂ S ₁₂ , Li ₂ SP ₂ S ₅ and derivatives thereof, halides, hydrides and lithium phosphorus oxynitride;

The organic polymer adopts poly(ethylene oxide) (PEO) based derivatives-metal salts, poly(benzimidazole) based derivatives-metal salts, and poly(vinylidene fluoride) based derivatives-metal salts. One or a mixture of at least two.

Further, the molar ratio between the solid ionic conductor material I in the first composite capacitor electrode and the first electrode active material is less than or equal to 100%;

The molar ratio between the solid-state ion conductor material II and the second electrode active material in the second composite capacitor electrode is less than or equal to 100%.

Further, the first electrode active material is uniformly distributed in the form of particles, and the solid ion conductor material I is filled in the gaps of the first electrode active material particles;

The second electrode active material is uniformly distributed in the form of particles, and the solid ion conductor material II is filled in the gaps of the second electrode active material particles.

The invention also proposes a solid-state laminated capacitor cell based on the composite material electrode,

It includes a soft package body, and the soft package body is provided with at least two solid capacitor cells as claimed in any one of claims 1-9 that are compounded together;

In two adjacent solid capacitor cells, the first composite material capacitor electrode at the end of one of the solid capacitor cells is arranged adjacent to the second composite material capacitor electrode at the end of the other solid capacitor cell , and between the adjacent first composite material capacitor electrodes and the second composite material capacitor electrodes, a bipolar current collector plate with electronic conduction but ion isolation is arranged.

The invention also proposes a solid-state composite capacitor cell based on the composite material electrode,

It includes a soft package body, and the soft package body is provided with at least two solid capacitor cells as claimed in any one of claims 1-9 that are compounded together;

Among the two adjacent solid-state capacitor cells,

One of the first composite material capacitor electrodes at the end of the solid capacitor cell is disposed adjacent to the first composite material capacitor electrode at the end of the other solid capacitor cell, and the two adjacent first composite material capacitor electrodes are adjacent to each other. The material capacitor electrodes are compounded together or the two adjacent first compound material capacitance electrodes are provided with bipolar current collectors that are electrically conductive but ionically isolated, or the adjacent two first compound materials There is an insulating diaphragm with electronic insulation and ion isolation between the material capacitor electrodes;

or,

One of the second composite material capacitor electrodes at the end of the solid capacitor cell is disposed adjacent to the second composite material capacitor electrode at the end of the other solid capacitor cell; the adjacent two second composite material capacitor electrodes are adjacent to each other. The material capacitor electrodes are combined together or the two adjacent second composite material capacitor electrodes are provided with bipolar current collectors that are electrically conductive but ionically isolated, or the adjacent two second composite materials There is an insulating diaphragm with electronic insulation and ion isolation between the material capacitor electrodes;

or,

One of the first composite material capacitor electrodes at the end of one of the solid capacitor cells is disposed adjacent to the second composite material capacitor electrode at the other end of the solid capacitor cell, and the adjacent first composite material capacitor electrodes are located adjacent to each other. An insulating diaphragm with electronic insulation and ion isolation is arranged between the material capacitor electrode and the second composite material capacitor electrode.

The beneficial effects of the present invention are:

The solid capacitor cell based on the composite material electrode of the present invention is made by using the mixture of the first electrode active material and the solid ion conductor material for the first composite material capacitor electrode, so that the ions can enter the first electrode through the solid ion conductor membrane. In the solid ion conductor material in the composite capacitor electrode, the ion permeability and the wettability between the solid ion conductor film and the first composite material capacitor electrode can be effectively improved, and the capacitance between the solid ion conductor film and the first composite material capacitor can be reduced. The interface resistance between the electrodes; similarly, by using the second composite material capacitor electrode with a mixture of the second electrode active material and the solid ion conductor material, ions can enter the second composite material capacitor electrode through the solid ion conductor film. In the solid ion conductor material, the ion permeability and the affinity between the solid ion conductor film and the second composite material capacitor electrode can be effectively improved, and the interface between the solid ion conductor film and the second composite material capacitor electrode can be reduced. resistance; to sum up, the solid capacitor cell based on the composite material electrode of the present invention can effectively improve the wettability between the solid ionic conductor membrane and the electrode, and can effectively reduce the interface between the solid ionic conductor membrane and the electrode resistance and increase ion permeability.

Description of drawings

In order to make the purpose, technical solutions and beneficial effects of the present invention clearer, the present invention provides the following drawings for description:

1 is a schematic structural diagram of Embodiment 1 of a solid-state capacitor cell based on composite material electrodes of the present invention, specifically the structure when the number N of the first composite material capacitor electrodes and the number M of the second composite material capacitor electrodes satisfy N=M=1 schematic diagram;

Fig. 2 is a detailed view of A of Fig. 1;

3 is a schematic view of the microstructure of the first composite capacitor electrode;

4 is a schematic view of the microstructure of the second composite capacitor electrode;

5 is a schematic structural diagram of Embodiment 2 of a solid-state capacitor cell based on composite material electrodes of the present invention, specifically a schematic structural diagram when the number of first composite material capacitor electrodes is N=1 and the number of second composite material capacitor electrodes M=2;

FIG. 6 is a detailed view of B of FIG. 5;

7 is a schematic structural diagram of Embodiment 3 of a solid-state capacitor cell based on composite material electrodes of the present invention, specifically a schematic structural diagram when the number of first composite material capacitor electrodes is N=2 and the number of second composite material capacitor electrodes M=1;

FIG. 8 is a detailed view of C of FIG. 7;

9 is a schematic structural diagram of Embodiment 4 of a solid-state capacitor cell based on composite material electrodes of the present invention, specifically a schematic structural diagram when the number of the first composite material capacitor electrodes and the second composite material capacitor electrodes are equal;

10 is a schematic structural diagram when the difference between the number of the first composite material capacitor electrodes and the number of the second composite material capacitor electrodes is equal to 1;

11 is a schematic structural diagram when the difference between the number of the second composite material capacitor electrodes and the number of the first composite material capacitor electrodes is equal to 1;

12 is a schematic diagram of the first structure of the solid-state laminated capacitor cell based on composite material electrodes of the present invention, specifically, the number N of the first composite material capacitor electrodes in the solid capacitor cell is equal to the number M of the second composite material capacitor electrodes In the figure, only the first composite material capacitor electrode tabs and the second composite material capacitor electrode tabs are respectively provided at both ends of the solid-state multilayer capacitor;

FIG. 13 is a solid state laminated capacitor cell when all first composite material capacitor electrodes are provided with first composite material capacitor electrode tabs and all second composite material capacitor electrodes are provided with second composite material capacitor electrode tabs Schematic diagram of the structure;

14 is a schematic diagram of the second structure of the solid-state laminated capacitor cell based on composite material electrodes of the present invention, specifically the number N of the first composite material capacitor electrodes and the number M of the second composite material capacitor electrodes in the solid-state capacitor cell Schematic diagram of the structure when the absolute value of the difference between them is equal to 1;

15 is a schematic structural diagram of Embodiment 6 of a solid composite capacitor cell based on composite material electrodes of the present invention, and specifically a first structural schematic diagram of a solid composite capacitor cell formed by using at least two solid capacitor cells in Example 1 ;

16 is a schematic diagram of a second structure of a solid-state composite capacitor cell composed of at least two solid-state capacitor cells in Example 1;

17 is a schematic diagram of the first structure when at least two solid capacitor cells in Embodiment 2 are combined together;

18 is a schematic diagram of the first structure when at least two solid capacitor cells in Embodiment 3 are combined together;

FIG. 19 is a schematic diagram of the second structure when at least two solid capacitor cells in Embodiment 2 are combined together;

20 is a schematic diagram of a second structure when at least two solid-state capacitor cells in Embodiment 3 are combined together;

21 is a schematic structural diagram of Embodiment 7 of a solid-state composite capacitor cell based on a composite material electrode of the present invention, and specifically a schematic structural diagram of using at least two solid-state capacitor cells in Embodiment 1 to be combined together;

FIG. 22 is a schematic structural diagram when at least two solid capacitor cells 100 in Embodiment 2 and Embodiment 3 are used for compounding together.

Description of reference numbers:

10-The first composite material capacitor electrode; 11-The first electrode active material; 12-The first groove; 13-Solid ion conductor material I; 14-The first composite material capacitor electrode tab;

20-second composite capacitor electrode; 21-second electrode active material; 22-second groove; 23-solid ion conductor material II; 24-second composite capacitor electrode tab;

30 - solid ionic conductor membrane;

100-solid capacitor cell; 101-soft enclosure; 102-bipolar collector plate; 103-soft enclosure; 104-bipolar collector plate; 105-insulating diaphragm; 106-insulating diaphragm.

Detailed ways

The present invention is further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

Example 1

As shown in FIG. 1 , it is a schematic structural diagram of Embodiment 1 of the solid capacitor cell based on the composite material electrode of the present invention. The solid capacitor cell based on composite material electrodes in this embodiment includes at least one first composite material capacitor electrode 10 and at least one second composite material capacitor electrode 20 . The first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 are arranged alternately, and a solid ion conductor film 30 is provided between the adjacent first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 .

The first composite material capacitor electrode 10 in this embodiment is made of a composite or a mixture of the first electrode active material 11 and the solid ion conductor material I13; specifically, the first electrode active material 11 in this embodiment is uniformly distributed in the form of particles , and the gaps of the first electrode active material particles are filled with solid ion conductor material I13. The molar ratio between the solid ion conductor material I13 in the first composite capacitor electrode 10 and the first electrode active material 11 is less than or equal to 100%. The first composite capacitor electrode is made of a mixture of the first electrode active material 11 and the solid ionic conductor material I13, which is mixed between the solid ionic conductor material I13 and the solid ionic conductor film 30 in the first composite capacitor electrode 10. It can be connected by ion conduction, which can effectively improve the ion permeability and reduce the interface resistance between the solid state and the electrode. The solid ion conductor material I13 in this embodiment is made of the same material as the solid ion conductor film 30. Of course, the solid ion conductor material I13 and the solid ion conductor film 30 can also be made of different materials, as long as the enhancement can be achieved. The wettability between the solid ion conductor film 30 and the first composite material capacitor electrode 10 can be reduced, the interface resistance between the solid ion conductor film 30 and the first composite material capacitor electrode 10 can be reduced, and the ion permeability can be increased.

The second composite material capacitor electrode 20 in this embodiment is made of a composite or a mixture of the second electrode active material 21 and the solid ion conductor material II 23; specifically, the second electrode active material 21 in this embodiment is uniformly distributed in the form of particles , and the gaps of the second electrode active material particles are filled with solid ion conductor material II23. The molar ratio between the solid ionic conductor material II 23 in the second composite capacitor electrode 20 and the second electrode active material 21 is less than or equal to 100%. The second composite 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 capacitor electrode 20 and the solid ion conductor film 30 are formed. It can be ionically conductive and connected, which can effectively improve the ion permeability and reduce the interface resistance between the solid state and the electrode. The solid ionic conductor material II 23 of this embodiment is made of the same material as the solid ionic conductor film 30 . Of course, as long as the solid ionic conductor film 30 and the first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 can be strengthened The wettability between the solid ion conductor film 30 and the interface resistance between the first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 can be reduced, and the ion permeability can be increased.

Further, the number N of the first composite material capacitor electrodes 10 and the number M of the second composite material capacitor electrodes 20 satisfy:

M=N, or, |M-N|=1.

Specifically, the number N of the first composite material capacitor electrodes 10 and the number M of the second composite material capacitor electrodes 20 in this embodiment satisfy: M=N=1.

Further, the side surface of the first composite material capacitor electrode 10 in this embodiment is flat, and the solid ion conductor film 30 is attached to the side surface of the first composite material capacitor electrode 10 . Of course, in some embodiments, a first groove may also be provided on the side of the first composite capacitor electrode 10, and the solid ion conductor film 30 attached to the side of the corresponding first composite capacitor electrode 10 is embedded in the first groove. In the groove, specifically, the first groove can be set in various structures, such as but not limited to wave groove, triangular sawtooth groove, trapezoidal groove, V-shaped groove, and rectangular groove. In order to increase the bonding area between the solid ion conductor film 30 and the side surface of the first composite capacitor electrode 10 , the width of the first groove in this embodiment gradually increases along the direction from the groove bottom to the notch. In some embodiments, first embedded holes may also be arrayed on the side surface of the first composite material capacitor electrode 10 , and the solid ion conductor film 30 attached to the side surface of the corresponding first composite material capacitor electrode 10 is embedded in the first embedded hole. inside the hole. Specifically, any two radial sections perpendicular to the axis of the first insertion hole are two radial sections I cut on the same first insertion hole, and the radial section I close to the bottom side of the first insertion hole The geometrical dimension of is less than or equal to the geometrical dimension of the radial section I near the side of the first insert hole. Specifically, the first insert hole may adopt various structures, such as a conical insert hole, a square-cone insert hole, and a flared insert hole, etc., which will not be described again. By arranging the first groove or the first embedded hole in the first composite capacitor electrode 10, the bonding strength and wettability between the first composite capacitor electrode 10 and the solid ion conductor membrane 30 can be effectively enhanced, and the first composite capacitor can be reduced. The interface resistance between the material capacitive electrode 10 and the solid ion conductor film 30 .

The side surface of the second composite material capacitor electrode 20 in this embodiment is flat, and the solid ion conductor film 30 is attached to the side surface of the second composite material capacitor electrode 20 . When hot, in some embodiments, a second groove may be provided on the side of the second composite capacitor electrode 20, and the solid ion conductor film 30 attached to the side of the corresponding second composite capacitor electrode 20 is embedded in the second groove. in the groove. Specifically, the first groove can be set 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 surface of the second composite capacitor electrode 20, the width of the second groove gradually increases along the direction from the groove bottom to the groove. In some embodiments, second embedded holes may also be arrayed on the side surface of the second composite material capacitor electrode 20, and the solid ion conductor film 30 attached to the side surface of the corresponding second composite material capacitor electrode 20 is embedded in the second composite material capacitor electrode 20. inside the hole. The geometric dimension of the radial section II on the side near the bottom of the second embedded hole among the two radial sections II taken from the same second embedded hole with any two radial sections perpendicular to the axis of the second embedded hole Less than or equal to the geometric dimension of the radial section II on the side close to the orifice of the second insert hole. The second insert holes all adopt various structures, such as conical insert holes, square-cone insert holes, and flared insert holes, etc., which will not be described again. By arranging the second groove on the second composite material capacitor electrode 20, the bonding strength and wettability between the second composite material capacitor electrode 20 and the solid ion conductor membrane 30 are enhanced, and the connection between the second composite material capacitor electrode 20 and the solid state ion conductor membrane 30 is enhanced. The interface resistance between the ion conductor films 30 .

Specifically, in some embodiments, only the first groove or the first embedded hole may be provided only on the side surface of the first composite material capacitor electrode 10 , or the first composite material capacitor electrode 10 may be provided with a a groove and a first insertion hole. Similarly, in some embodiments, the second groove or the second embedded hole may be provided only on the side surface of the second composite material capacitor electrode 20 , or the second composite material capacitor electrode 20 may be provided with a second groove on the side surface at the same time. Groove and second insert hole.

Further, the first capacitor electrode active material 11 and the second capacitor electrode active material 21 use but are not limited to lithium iron phosphate, ternary materials, sulfur-containing conductive materials, porous carbon layer air capacitor electrodes containing metal or organic materials, layered metal One or a mixture of at least two of oxide materials, oxygen-containing organic polymer materials, metal lithium, metal sodium, metal aluminum, metal magnesium, metal potassium, graphene, hard carbon, silicon oxide and silicon. 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, which will not be described again.

The solid ion conductor membrane 30 forms a good electrode/electrolyte interface with the composite material positive electrode and the composite material negative electrode respectively by a hot pressing physical method or a chemical method. Specifically, the solid ionic conductor material, solid ionic conductor material I13 and solid ionic conductor material II23 are made of, but not limited to, one or a mixture of at least two of gels, oxides, sulfides and organic polymers. Wherein, the gel is an electrolyte composed of polymer compound-metal salt and/or solvent ternary components, using but not limited to poly(vinyl alcohol) derivatives-acid or alkali or metal salt, poly(benzoyl alcohol) Imidazolyl) base derivative-metal salt-organic solvent, poly(vinylidene fluoride) base derivative-metal salt-organic solvent, poly(ethylene oxide) base derivative-metal salt-organic solvent and poly(methacrylic acid) Methyl)yl derivative-metal salt-organic solvent or a mixture of at least two. The oxides include but are not limited to sodium superion conductor (NASICON) type-LiTi ₂ (PO ₄ ) ₃ and its derivatives, lithium superion conductor (LISICON) type-Li ₁₄ Zn(GeO ₄ ) ₄ and its derivatives And garnet (Garnet) type-Li ₇ La ₃ Zr ₂ O ₁₂ and its derivatives. The sulfides include, but are not limited to, Li ₁₀ GeP ₂ S ₁₂ , Li ₂ SP ₂ S ₅ and derivatives thereof, halides, hydrides, and lithium phosphorus oxynitride. The organic polymer adopts poly(ethylene oxide) (PEO) based derivatives-metal salts, poly(benzimidazole) based derivatives-metal salts, and poly(vinylidene fluoride) based derivatives-metal salts. One or a mixture of at least two. Specifically, the solid ion conductor membrane, the solid ion conductor material I13 and the solid ion conductor material II23 can be made of the same material, or they can be made of different materials, but they need to be able to satisfy ion conduction.

This embodiment is based on a solid-state capacitor cell based on a 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. In this way, ions can enter the first electrode through the solid-state ion conductor membrane. In the solid ion conductor material in the composite capacitor electrode, the ion permeability and the wettability between the solid ion conductor film and the first composite material capacitor electrode can be effectively improved, and the capacitance between the solid ion conductor film and the first composite material capacitor can be reduced. The interface resistance between the electrodes; similarly, by using the second composite material capacitor electrode with a mixture of the second electrode active material and the solid ion conductor material, ions can enter the second composite material capacitor electrode through the solid ion conductor film. In the solid ion conductor material, the ion permeability and the affinity between the solid ion conductor film and the second composite material capacitor electrode can be effectively improved, and the interface between the solid ion conductor film and the second composite material capacitor electrode can be reduced. resistance; to sum up, the solid capacitor cell based on the composite material electrode in this embodiment can effectively improve the wettability between the solid ionic conductor membrane and the electrode, and can effectively reduce the interface between the solid ionic conductor membrane and the electrode resistance and increase ion permeability.

Example 2

As shown in FIG. 5 , it is a schematic structural diagram of Embodiment 2 of the solid capacitor cell based on the composite material electrode of the present invention. The solid capacitor cell based on composite material electrodes in this embodiment includes at least one first composite material capacitor electrode 10 and at least one second composite material capacitor electrode 20 . The first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 are arranged alternately, and a solid ion conductor film 30 is provided between the adjacent first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 .

The first composite material capacitor electrode 10 in this embodiment is made of a composite or a mixture of the first electrode active material 11 and the solid ion conductor material I13; specifically, the first electrode active material 11 in this embodiment is uniformly distributed in the form of particles , and the gaps of the first electrode active material particles are filled with solid ion conductor material I13. The molar ratio between the solid ion conductor material I13 in the first composite capacitor electrode 10 and the first electrode active material 11 is less than or equal to 100%. The first composite capacitor electrode is made of a mixture of the first electrode active material 11 and the solid ionic conductor material I13, which is mixed between the solid ionic conductor material I13 and the solid ionic conductor film 30 in the first composite capacitor electrode 10. It can be connected by ion conduction, which can effectively improve the ion permeability and reduce the interface resistance between the solid state and the electrode. The solid ion conductor material I13 in this embodiment is made of the same material as the solid ion conductor film 30. Of course, the solid ion conductor material I13 and the solid ion conductor film 30 can also be made of different materials, as long as the enhancement can be achieved. The wettability between the solid ion conductor film 30 and the first composite material capacitor electrode 10 can be reduced, the interface resistance between the solid ion conductor film 30 and the first composite material capacitor electrode 10 can be reduced, and the ion permeability can be increased.

The second composite material capacitor electrode 20 in this embodiment is made of a composite or a mixture of the second electrode active material 21 and the solid ion conductor material II 23; specifically, the second electrode active material 21 in this embodiment is uniformly distributed in the form of particles , and the gaps of the second electrode active material particles are filled with solid ion conductor material II23. The molar ratio between the solid ionic conductor material II 23 in the second composite capacitor electrode 20 and the second electrode active material 21 is less than or equal to 100%. The second composite 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 capacitor electrode 20 and the solid ion conductor film 30 are formed. It can be ionically conductive and connected, which can effectively improve the ion permeability and reduce the interface resistance between the solid state and the electrode. The solid ionic conductor material II 23 of this embodiment is made of the same material as the solid ionic conductor film 30 . Of course, as long as the solid ionic conductor film 30 and the first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 can be strengthened The wettability between the solid ion conductor film 30 and the interface resistance between the first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 can be reduced, and the ion permeability can be increased.

Further, the number N of the first composite material capacitor electrodes 10 and the number M of the second composite material capacitor electrodes 20 satisfy:

M=N, or, |M-N|=1.

Specifically, in this embodiment, the number N of the first composite material capacitor electrodes 10 is 1, and the number of the second composite material capacitor electrodes 20 is M=2, and satisfies: M−N=1. The two second composite material capacitor electrodes 20 are respectively disposed on both sides of the first composite material capacitor electrode 10 . The two second composite material capacitor electrodes 20 in this embodiment may be electrically connected by an internal circuit or an external circuit, which will not be described again.

Further, a first groove 12 is provided on the side of the first composite material capacitor electrode 10 in this embodiment, and the solid ion conductor film 30 attached to the side surface of the corresponding first composite material capacitor electrode 10 is embedded in the first groove 12 Inside. The side surface of the second composite capacitor electrode 20 is provided with a second groove 22 , and the solid ion conductor film 30 attached to the side surface of the corresponding second composite capacitor electrode 20 is embedded in the second groove 22 . Specifically, the first grooves 12 are provided on both sides of the first composite material capacitor electrode 10 in this embodiment, and the two second composite material capacitor electrodes 20 are on one side surface facing the first composite material capacitor electrode 10 . Both are provided with second grooves 22 .

Of course, the first embedded hole can also be provided on the side of the first composite capacitor electrode 10 or the side of the first composite capacitor electrode 10 can be set as a plane; The second embedded hole is arranged on the upper surface or the side surface of the second composite material capacitor electrode 20 is arranged to be flat, which will not be described one by one.

Other structures of this embodiment are the same as those of Embodiment 1, and will not be described one by one.

Example 3

As shown in FIG. 7 , it is a schematic structural diagram of Embodiment 3 of the solid capacitor cell based on the composite material electrode of the present invention. The solid capacitor cell based on composite material electrodes in this embodiment includes at least one first composite material capacitor electrode 10 and at least one second composite material capacitor electrode 20 . The first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 are arranged alternately, and a solid ion conductor film 30 is provided between the adjacent first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 .

The first composite material capacitor electrode 10 in this embodiment is made of a composite or a mixture of the first electrode active material 11 and the solid ion conductor material I13; specifically, the first electrode active material 11 in this embodiment is uniformly distributed in the form of particles , and the gaps of the first electrode active material particles are filled with solid ion conductor material I13. The molar ratio between the solid ion conductor material I13 in the first composite capacitor electrode 10 and the first electrode active material 11 is less than or equal to 100%. The first composite capacitor electrode is made of a mixture of the first electrode active material 11 and the solid ionic conductor material I13, which is mixed between the solid ionic conductor material I13 and the solid ionic conductor film 30 in the first composite capacitor electrode 10. It can be connected by ion conduction, which can effectively improve the ion permeability and reduce the interface resistance between the solid state and the electrode. The solid ion conductor material I13 in this embodiment is made of the same material as the solid ion conductor film 30. Of course, the solid ion conductor material I13 and the solid ion conductor film 30 can also be made of different materials, as long as the enhancement can be achieved. The wettability between the solid ion conductor film 30 and the first composite material capacitor electrode 10 can be reduced, the interface resistance between the solid ion conductor film 30 and the first composite material capacitor electrode 10 can be reduced, and the ion permeability can be increased.

The second composite material capacitor electrode 20 in this embodiment is made of a composite or a mixture of the second electrode active material 21 and the solid ion conductor material II 23; specifically, the second electrode active material 21 in this embodiment is uniformly distributed in the form of particles , and the gaps of the second electrode active material particles are filled with solid ion conductor material II23. The molar ratio between the solid ionic conductor material II 23 in the second composite capacitor electrode 20 and the second electrode active material 21 is less than or equal to 100%. The second composite 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 capacitor electrode 20 and the solid ion conductor film 30 are formed. It can be ionically conductive and connected, which can effectively improve the ion permeability and reduce the interface resistance between the solid state and the electrode. The solid ionic conductor material II 23 of this embodiment is made of the same material as the solid ionic conductor film 30 . Of course, as long as the solid ionic conductor film 30 and the first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 can be strengthened The wettability between the solid ion conductor film 30 and the interface resistance between the first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 can be reduced, and the ion permeability can be increased.

Further, the number N of the first composite material capacitor electrodes 10 and the number M of the second composite material capacitor electrodes 20 satisfy:

M=N, or, |M-N|=1.

Specifically, in this embodiment, the number N of the first composite material capacitor electrodes 10 is 2, and the number of the second composite material capacitor electrodes 20 is M=1, and the satisfaction is satisfied: N−M=1. The two first composite material capacitor electrodes 10 are respectively disposed on both sides of the second composite material capacitor electrode 20 . The two first composite material capacitor electrodes 10 in this embodiment may be electrically connected by an internal circuit or an external circuit, which will not be described again.

Further, the side surface of the first composite material capacitor electrode 10 in this embodiment is flat, and the solid ion conductor film 30 is attached to the side surface of the first composite material capacitor electrode 10 . Of course, in some embodiments, a first groove may also be provided on the side of the first composite capacitor electrode 10, and the solid ion conductor film 30 attached to the side of the corresponding first composite capacitor electrode 10 is embedded in the first groove. in the groove. In some embodiments, first embedded holes may also be arrayed on the side surface of the first composite material capacitor electrode 10 , and the solid ion conductor film 30 attached to the side surface of the corresponding first composite material capacitor electrode 10 is embedded in the first embedded hole. inside the hole.

The side surface of the second composite material capacitor electrode 20 in this embodiment is flat, and the solid ion conductor film 30 is attached to the side surface of the second composite material capacitor electrode 20 . When hot, in some embodiments, a second groove may be provided on the side of the second composite capacitor electrode 20, and the solid ion conductor film 30 attached to the side of the corresponding second composite capacitor electrode 20 is embedded in the second groove. in the groove. In some embodiments, second embedded holes may also be arrayed on the side surface of the second composite material capacitor electrode 20, and the solid ion conductor film 30 attached to the side surface of the corresponding second composite material capacitor electrode 20 is embedded in the second composite material capacitor electrode 20. inside the hole.

Other structures of this embodiment are the same as those of Embodiment 1, and will not be described one by one.

Example 4

As shown in FIG. 9 , it is a schematic structural diagram of Embodiment 4 of the solid capacitor cell based on the composite material electrode of the present invention. The solid capacitor cell based on composite material electrodes in this embodiment includes at least one first composite material capacitor electrode 10 and at least one second composite material capacitor electrode 20 . The first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 are arranged alternately, and a solid ion conductor film 30 is provided between the adjacent first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 .

The first composite material capacitor electrode 10 in this embodiment is made of a composite or a mixture of the first electrode active material 11 and the solid ion conductor material I13; specifically, the first electrode active material 11 in this embodiment is uniformly distributed in the form of particles , and the gaps of the first electrode active material particles are filled with solid ion conductor material I13. The molar ratio between the solid ion conductor material I13 in the first composite capacitor electrode 10 and the first electrode active material 11 is less than or equal to 100%. The first composite capacitor electrode is made of a mixture of the first electrode active material 11 and the solid ionic conductor material I13, which is mixed between the solid ionic conductor material I13 and the solid ionic conductor film 30 in the first composite capacitor electrode 10. It can be connected by ion conduction, which can effectively improve the ion permeability and reduce the interface resistance between the solid state and the electrode. The solid ion conductor material I13 in this embodiment is made of the same material as the solid ion conductor film 30. Of course, the solid ion conductor material I13 and the solid ion conductor film 30 can also be made of different materials, as long as the enhancement can be achieved. The wettability between the solid ion conductor film 30 and the first composite material capacitor electrode 10 can be reduced, the interface resistance between the solid ion conductor film 30 and the first composite material capacitor electrode 10 can be reduced, and the ion permeability can be increased.

The second composite material capacitor electrode 20 in this embodiment is made of a composite or a mixture of the second electrode active material 21 and the solid ion conductor material II 23; specifically, the second electrode active material 21 in this embodiment is uniformly distributed in the form of particles , and the gaps of the second electrode active material particles are filled with solid ion conductor material II23. The molar ratio between the solid ionic conductor material II 23 in the second composite capacitor electrode 20 and the second electrode active material 21 is less than or equal to 100%. The second composite 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 capacitor electrode 20 and the solid ion conductor film 30 are formed. It can be ionically conductive and connected, which can effectively improve the ion permeability and reduce the interface resistance between the solid state and the electrode. The solid ionic conductor material II 23 of this embodiment is made of the same material as the solid ionic conductor film 30 . Of course, as long as the solid ionic conductor film 30 and the first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 can be strengthened The wettability between the solid ion conductor film 30 and the interface resistance between the first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 can be reduced, and the ion permeability can be increased.

Further, the number N of the first composite material capacitor electrodes 10 and the number M of the second composite material capacitor electrodes 20 satisfy:

M=N, or, |M-N|=1.

Specifically, in this embodiment, the number N≥2 of the first composite material capacitor electrodes 10, the number M≥2 of the second composite material capacitor electrodes 20, the number of the first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 The quantity can be set according to actual needs, and will not be repeated. All the second composite material capacitor electrodes 20 in this embodiment can be electrically connected by an internal circuit or an external circuit, and all the first composite material capacitor electrodes 10 can be electrically connected by an internal circuit or an external circuit.

When N=M, the two electrodes at both ends are the first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 respectively, as shown in FIG. 9 ;

When N-M=1, the two electrodes at both ends are the first composite material capacitor electrodes 10, as shown in FIG. 10;

When M-N=1, the two electrodes at both ends are the second composite material capacitor electrodes 20, as shown in FIG. 11 .

Other structures of this embodiment are the same as those of Embodiment 1, and will not be described one by one.

Example 5

As shown in FIG. 12 , it is a schematic structural diagram of the solid-state laminated capacitor cell based on the composite material electrode of the present invention. The solid laminated capacitor cell based on the composite material electrode in this embodiment includes a soft package 101 , and at least two solid capacitor cells 100 of the present embodiment as described above are compounded in the soft package 101 . Specifically, the number of solid capacitor cells 100 disposed in the soft case 101 may be 2, 3, or more than 3, which will not be described repeatedly.

Specifically, among two adjacent solid capacitor cells 100 , the first composite material capacitor electrode 10 at the end of one solid capacitor cell 100 and the second composite material capacitor electrode 20 at the end of the other solid capacitor cell 100 They are arranged adjacently, and between the adjacent first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 are provided with bipolar current collectors 102 that are electrically conductive but ionically isolated. By combining a plurality of solid capacitor cells 100 into a solid stacked capacitor cell, the output voltage of the solid stacked capacitor cell can be effectively increased.

The two ends of the solid-state laminated capacitor cell in this embodiment are respectively provided with a first composite material capacitor electrode tab 14 and a second composite material capacitor electrode tab 24 . Of course, the first composite material capacitor electrode tabs 14 can also be provided on the first composite material capacitor electrode 10 of each solid capacitor cell 100 , and the second composite material capacitor electrode 20 of each solid capacitor cell 100 can also be provided. The second composite material capacitor electrode tab 24 is convenient for an external circuit to be used to control the power output of the solid-state laminated capacitor cell, as shown in FIG. 13 .

Specifically, the structure of the solid-state multilayer capacitor cell in this embodiment has various changes:

As shown in FIGS. 12 and 13 , it is a schematic structural diagram when the solid capacitor cells 100 in Embodiment 1 are combined into a solid multilayer capacitor cell. In the solid laminate capacitor cell, the number of solid capacitor cells 100 can There are 2, 3 or more than 3, and among two adjacent solid-state capacitor cells 100, the first composite material capacitor electrode 10 at the end of one solid-state capacitor cell 100 and the end of the other solid-state capacitor cell 100 The second composite material capacitor electrodes 20 are disposed adjacent to each other, and a bipolar current collector plate 102 that is electrically conductive but ionically isolated is provided between the adjacent first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 .

By analogy, when the number N of the first composite material capacitor electrodes 10 and the number M of the second composite material capacitor electrodes 20 in the solid capacitor cell 100 satisfy M=N≥1, all the solid capacitor electrodes only need to be The cells 100 can be stacked together in sequence. Among two adjacent solid capacitor cells 100 , the first composite material capacitor electrode 10 at the end of one solid capacitor cell 100 and the first composite material capacitor electrode 10 at the end of the other solid capacitor cell 100 . The second composite material capacitor electrodes 20 are disposed adjacent to each other, and a bipolar current collector plate 102 that is electrically conductive but ionically isolated is provided between the adjacent first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 .

As shown in FIG. 14 , it is a schematic structural diagram when the solid-state capacitor cell 100 in Embodiment 2 and the solid-state capacitor cell 100 in Embodiment 3 are combined into a solid-state multilayer capacitor cell. , in order to realize in two adjacent solid capacitor cells 100, the first composite material capacitor electrode 10 at the end of one solid capacitor cell 100 and the second composite material capacitor electrode 20 at the end of the other solid capacitor cell 100 For the adjacently arranged structures, the solid capacitor cells 100 in the second embodiment and the solid capacitor cells 100 in the third embodiment need to be interleaved and stacked together. In this way, the two adjacent solid capacitor cells 100 can be The first composite material capacitor electrode 10 at the end of one solid-state capacitor cell 100 is disposed adjacent to the second composite material capacitor electrode 20 at the end of the other solid-state capacitor cell 100, and the adjacent first composite material capacitor Between the electrode 10 and the second composite capacitor electrode 20 is provided a bipolar current collector plate 102 that is electrically conductive but ionically isolated.

By analogy, when the number N of the first composite material capacitor electrodes 10 and the number M of the second composite material capacitor electrodes 20 in the solid capacitor cell 100 satisfy |M-N|=1, and the number N of the first composite material capacitor electrodes ≥1, when the number M of the second composite material capacitor electrodes is greater than or equal to 1, in the two adjacent solid capacitor cells 100 at this time, the number N of the first composite material capacitor electrodes of one solid capacitor cell 100 is the same as that of the second composite capacitor electrode. The number M of material capacitor electrodes satisfies N-M=1, and the number N of the first composite material capacitor electrodes and the number M of the second composite material capacitor electrodes of the other solid capacitor cell 100 satisfy M-N=1, so as to ensure that the adjacent two In each of the 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 is located at the end of the other solid capacitor cell 100. A bipolar current collector plate 102 that is electrically conductive but ionically isolated is provided between the adjacent first composite material capacitor electrodes 10 and the second composite material capacitor electrodes 20 .

Of course, when the number N of the first composite material capacitor electrodes 10 and the number M of the second composite material capacitor electrodes 20 in the solid capacitor cell 100 satisfy |M-N|=1 and the number N≥1 of the first composite material capacitor electrodes, When the number M of the second composite material capacitor electrodes is greater than or equal to 1, at this time, among the solid capacitor cells 100 with two types of structures, the number N of the first composite material capacitor electrodes of the one type of solid capacitor cells 100 is the The number M of electrodes satisfies N-M=1, and the number N of the first composite material capacitor electrodes and the number M of the second composite material capacitor electrodes of the other type of solid-state capacitor cell 100 satisfy M-N=1. Between the cores 100, it is also possible to stack at least one solid capacitor cell 100 that satisfies N=M between the number N of the first composite material capacitor electrodes and the number M of the second composite material capacitor electrodes. In the core 100, the first composite material capacitor electrode 10 at the end of one solid-state capacitor cell 100 is disposed adjacent to the second composite material capacitor electrode 20 at the end of the other solid-state capacitor cell 100, and is adjacent to the second composite material capacitor electrode 20. A bipolar current collector plate 102 that is electrically conductive but ionically isolated between the first composite material capacitor electrode 10 and the second composite material capacitor electrode 20 only needs to be provided, which will not be described again.

Example 6

As shown in FIG. 15 , it is a schematic structural diagram of Embodiment 6 of the solid composite capacitor cell based on the composite material electrode of the present invention. The solid composite capacitor cell based on the composite material electrode in this embodiment includes a soft package body 103 , and at least two solid capacitor cells 100 as described above that are combined together are arranged in the soft package body 103 .

Specifically, in two adjacent solid capacitor cells 100 , the first composite material capacitor electrode 10 at the end of one solid capacitor cell 100 and the first composite material capacitor electrode 10 at the end of the other solid capacitor cell 100 Adjacent arrangement, the two adjacent first composite material capacitor electrodes 10 are compounded together or between the two adjacent first composite material capacitor electrodes 10 are bipolar current collectors that are electrically conductive and ionically isolated An insulating diaphragm 105 with electronic insulation and ion isolation is provided between the plate 104 or the two adjacent first composite capacitor electrodes 10; The second composite material capacitor electrodes 20 at the end of the other solid capacitor cell 100 are arranged adjacently; the adjacent two second composite material capacitor electrodes 20 are combined together or the adjacent two second composite material capacitor electrodes 20 are combined together. An electronically conductive and ionically isolated bipolar current collector 104 is provided between the capacitor electrodes 20 or an electronically insulated and ionically isolated insulating membrane 105 is provided between the two adjacent second composite capacitor electrodes 20 .

As shown in FIG. 15 , which is a schematic structural diagram when at least two solid-state capacitor cells 100 in Embodiment 1 are combined together, among two adjacent solid-state capacitor cells 100 , the end of one solid-state capacitor cell 100 is or , wherein the second composite material capacitor electrode 20 at the end of one solid-state capacitor cell 100 is disposed adjacent to the second composite material capacitor electrode 20 at the end of the other solid-state capacitor cell 100; The capacitor electrodes 20 are combined together.

As shown in FIG. 16 , which is a schematic structural diagram when at least two solid-state capacitor cells 100 in Embodiment 1 are combined together, among two adjacent solid-state capacitor cells 100 , the end of one solid-state capacitor cell 100 is The first composite material capacitor electrode 10 is disposed adjacent to the first composite material capacitor electrode 10 at the end of another solid capacitor cell 100, and there is an electronically conductive and An electrically insulating and ionically isolated insulating diaphragm 105 is provided between the ionically isolated bipolar current collector plate 104 or the two adjacent first composite capacitor electrodes 10; Two composite material capacitor electrodes 20 are disposed adjacent to the second composite material capacitor electrode 20 at the end of another solid capacitor cell 100 ; the two adjacent second composite material capacitor electrodes 20 are provided with electronic conduction and ion isolation. An insulating membrane 105 that is electrically insulated and ionically isolated is provided between the bipolar current collecting plate 104 or the two adjacent second composite capacitor electrodes 20 .

By analogy, when the number N of the first composite material capacitor electrodes 10 in the solid-state capacitor cell 100 and the number M of the second composite material capacitor electrodes 20 satisfy N=M, both as shown in FIG. 15 and FIG. 16 can be used. In this manner, at least two solid capacitor cells 100 are composited together to form a solid composite capacitor cell.

As shown in FIG. 17 , it is a schematic structural diagram when at least two solid capacitor cells 100 in Embodiment 2 are used for compounding together. In two adjacent solid capacitor cells 100 , the second composite material capacitor electrode 20 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 ; The adjacent two second composite capacitor electrodes 20 are combined together.

As shown in FIG. 18 , it is a schematic structural diagram when at least two solid capacitor cells 100 in Embodiment 3 are used for compounding together. In two adjacent solid capacitor cells 100 , the second composite material capacitor electrode 20 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 ; The adjacent two second composite capacitor electrodes 20 are combined together.

As shown in FIG. 19 , it is a schematic structural diagram when at least two solid-state capacitor cells 100 in Embodiment 2 are used for compounding together. In two adjacent solid capacitor cells 100 , the second composite material capacitor electrode 20 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 ; The two adjacent second composite material capacitor electrodes 20 are provided with electronically conductive and ionically isolated bipolar current collector plates 104 or between the adjacent two second composite material capacitor electrodes 20 are provided with electronic insulation And the insulating membrane 105 for ion isolation.

As shown in FIG. 20 , it is a schematic structural diagram when at least two solid capacitor cells 100 in Embodiment 3 are used for compounding together. In two adjacent solid capacitor cells 100 , the second composite material capacitor electrode 20 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 ; The bipolar current collecting plate 104 that is electrically conductive and ionically isolated between the adjacent two second composite material capacitor electrodes 20 or the two adjacent first composite material capacitor electrodes 10 is provided with electronically insulating and ionically isolated bipolar current collectors 104 Isolated insulating diaphragm 105 .

By analogy, when the number N of the first composite material capacitor electrodes 10 in the solid-state capacitor cell 100 and the number M of the second composite material capacitor electrodes 20 satisfy |M-N|=1, it can be used as shown in Figure 17- 20, at least two solid capacitor cells 100 are composited together to form a solid composite capacitor cell.

In this embodiment, all the first composite material capacitor electrodes 10 of each solid capacitor cell 100 are provided with first composite material capacitor electrode tabs 14 , and all second composite material capacitor electrodes 20 are provided with second composite material capacitor electrodes 20 . Material capacitor electrode tabs 24 .

Example 7

As shown in FIG. 21 , it is a schematic structural diagram of Example 7 of the solid composite capacitor cell based on the composite material electrode of the present invention. The solid composite capacitor cell based on the composite material electrode in this embodiment includes a soft package body 103 , and at least two solid capacitor cells 100 as described above that are combined together are arranged in the soft package body 103 .

In two adjacent solid capacitor cells 100 , the first composite material capacitor electrode 10 at the end of one solid capacitor cell 100 and the second composite material capacitor electrode 20 at the end of the other solid capacitor cell 100 are disposed adjacent to each other. , and between the adjacent first composite material capacitor electrode 10 and the second composite material capacitor electrode 20, an insulating diaphragm 106 with electronic insulation and ion isolation is provided, and each solid capacitor cell 100 can be independently controlled to achieve external output. For electrical energy, of course, a plurality of solid capacitor cells 100 can be controlled by an external circuit to achieve external output of electrical energy in series, in parallel, or in a series-parallel combination.

As shown in FIG. 21 , it is a schematic structural diagram when at least two solid-state capacitor cells 100 in Example 1 are used for compounding together;

As shown in FIG. 22 , it is a schematic structural diagram when at least two solid capacitor cells 100 in Embodiment 2 and Embodiment 3 are used for compounding together.

In this embodiment, all the first composite material capacitor electrodes 10 of each solid capacitor cell 100 are provided with first composite material capacitor electrode tabs 14 , and all second composite material capacitor electrodes 20 are provided with second composite material capacitor electrodes 20 . Material capacitor electrode tabs 24 .

The above-mentioned embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present 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).

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