CN112993410A - Manufacturing method of novel high-capacity solid-state lithium ion battery - Google Patents
Manufacturing method of novel high-capacity solid-state lithium ion battery Download PDFInfo
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 26
- 239000007787 solid Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000003792 electrolyte Substances 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 11
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 10
- 125000002560 nitrile group Chemical group 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000003999 initiator Substances 0.000 claims abstract description 7
- 230000004913 activation Effects 0.000 claims abstract description 6
- 150000001768 cations Chemical class 0.000 claims abstract description 6
- 239000007784 solid electrolyte Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000005086 pumping Methods 0.000 claims abstract description 4
- -1 lithium aluminum titanium Chemical compound 0.000 claims description 12
- 150000002484 inorganic compounds Chemical class 0.000 claims description 7
- 229910010272 inorganic material Inorganic materials 0.000 claims description 7
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 6
- 150000002642 lithium compounds Chemical class 0.000 claims description 6
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 6
- 150000002894 organic compounds Chemical class 0.000 claims description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 5
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910001386 lithium phosphate Inorganic materials 0.000 claims description 4
- GKTNLYAAZKKMTQ-UHFFFAOYSA-N n-[bis(dimethylamino)phosphinimyl]-n-methylmethanamine Chemical compound CN(C)P(=N)(N(C)C)N(C)C GKTNLYAAZKKMTQ-UHFFFAOYSA-N 0.000 claims description 4
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
- RJEIKIOYHOOKDL-UHFFFAOYSA-N [Li].[La] Chemical compound [Li].[La] RJEIKIOYHOOKDL-UHFFFAOYSA-N 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims 1
- 229910019142 PO4 Inorganic materials 0.000 claims 1
- 239000002202 Polyethylene glycol Substances 0.000 claims 1
- 230000000536 complexating effect Effects 0.000 claims 1
- 238000010668 complexation reaction Methods 0.000 claims 1
- 229910000664 lithium aluminum titanium phosphates (LATP) Inorganic materials 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- 239000010452 phosphate Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 abstract description 3
- 238000004880 explosion Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 17
- 230000006872 improvement Effects 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 5
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 3
- JFDZBHWFFUWGJE-UHFFFAOYSA-N benzonitrile Chemical compound N#CC1=CC=CC=C1 JFDZBHWFFUWGJE-UHFFFAOYSA-N 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- BTGRAWJCKBQKAO-UHFFFAOYSA-N adiponitrile Chemical compound N#CCCCCC#N BTGRAWJCKBQKAO-UHFFFAOYSA-N 0.000 description 2
- CVJYOKLQNGVTIS-UHFFFAOYSA-K aluminum;lithium;titanium(4+);phosphate Chemical compound [Li+].[Al+3].[Ti+4].[O-]P([O-])([O-])=O CVJYOKLQNGVTIS-UHFFFAOYSA-K 0.000 description 2
- IDBFBDSKYCUNPW-UHFFFAOYSA-N lithium nitride Chemical compound [Li]N([Li])[Li] IDBFBDSKYCUNPW-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 description 1
- 239000002011 CNT10 Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 229920005569 poly(vinylidene fluoride-co-hexafluoropropylene) Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- IAHFWCOBPZCAEA-UHFFFAOYSA-N succinonitrile Chemical compound N#CCCC#N IAHFWCOBPZCAEA-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Dispersion Chemistry (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a manufacturing method of a novel high-capacity solid-state lithium ion battery, which is characterized in that a coating is coated on the surface of a pole piece; after the pole piece coated with the coating is arranged in a battery shell, battery activation and baking processes are carried out, and solid electrolyte high-valence cations in the coating and an initiator containing nitrile groups in electrolyte in the battery shell are subjected to a complex reaction to form a lithium polymer, so that a solid interface is formed on the surface of the pole piece; and finally, carrying out a vacuum-pumping sealing process on the battery. According to the manufacturing method of the novel high-capacity solid-state lithium ion battery provided by the invention, the manufactured lithium ion battery has no free electrolyte, the interface is stable, and the risks of liquid leakage, explosion and the like of the conventional lithium ion battery are effectively avoided.
Description
Technical Field
The invention relates to the field of lithium ion battery manufacturing, in particular to a manufacturing method of a novel high-capacity solid-state lithium ion battery.
Background
Lithium ion batteries are batteries using nonaqueous electrolyte and lithium-containing metal oxide as a positive electrode material and graphite or silicon carbon as a negative electrode material. Because lithium is a very active element, the lithium has very high requirements on the environment during processing, storage and use. With the development of science and technology, lithium ion batteries have become the mainstream of power and energy storage.
The length and width of the pole piece of the high-capacity solid lithium battery with the single body of more than 500Ah are more than 300mm and 500 mm. When traditional large capacity solid-state lithium cell is makeed, because do not have the coating on traditional large capacity solid-state lithium cell's the pole piece, there is not polymerization after the battery shaping, lead to large-scale battery positive plate, the interface is inhomogeneous between negative pole piece and the diaphragm, can't solidify unnecessary liquid electrolyte, consequently the battery hardness is not high, also misplaces easily between the pole piece, has the weeping after the battery damage and the risk of easily firing, and the weeping pollutes the consumer easily.
Disclosure of Invention
The invention aims to provide a manufacturing method of a novel high-capacity solid-state lithium ion battery, the manufactured lithium ion battery has no free electrolyte, the interface is stable, and the risks of liquid leakage, ignition, explosion and the like of the conventional lithium ion battery are effectively avoided.
In order to achieve the purpose, the invention provides a manufacturing method of a novel high-capacity solid-state lithium ion battery, which is characterized in that a coating is coated on the surface of a pole piece; after the pole piece coated with the coating is arranged in a battery shell, battery activation and baking processes are carried out, and solid electrolyte high-valence cations in the coating and an initiator containing nitrile groups in electrolyte in the battery shell are subjected to a complex reaction to form a lithium polymer, so that a solid interface is formed on the surface of the pole piece; and finally, carrying out a vacuum-pumping sealing process on the battery.
As a further improvement of the invention, the pole piece comprises a positive pole piece and a negative pole piece; when the positive plate and the negative plate coated with the coatings are arranged in a battery shell, the positive plate and the negative plate are separated through the diaphragm, and the positive plate and the negative plate are both bonded with the diaphragm through the coatings.
As a further improvement of the invention, the pole piece is connected with a battery tab before being arranged in a battery shell, then the pole piece and the diaphragm are assembled in the battery shell together, and then the solidification is completed through the processes of packaging, electrolyte injection, activation and baking in sequence, so that a solid interface is formed on the surface of the pole piece.
As a further improvement of the invention, the coating comprises at least one of LLZO (lanthanum lithium zirconate), LATP (lithium titanium aluminum phosphate), lithium nitride, lithium phosphate, lithium fluoride, silica, silicone, PVDF, PMMA, PEO, acrylic.
As a further improvement of the present invention, the nitrile group includes at least one of a mononitrile, a dinitrile, a cyclic nitrile and a phosphazene.
As a further improvement of the invention, when a solid interface is formed on the surface of the pole piece, an inorganic compound layer, an organic compound layer and an organic lithium carbonate compound layer are sequentially formed on the surface of the pole piece at different potentials, so that a multilayer poly lithium compound is formed as the solid interface; the surface of the pole piece, the inorganic compound layer, the organic compound layer and the organic lithium carbonate compound layer are sequentially arranged.
As a further development of the invention, the thickness of the coating is 0.1 to 100. mu.m.
As a further improvement of the invention, the coating is coated on one or both sides of the pole piece.
Advantageous effects
Compared with the prior art, the novel high-capacity solid-state lithium ion battery structure and the manufacturing method thereof have the advantages that:
1. in the manufacturing process of the battery, the high valence cations of the solid electrolyte in the coating on the surface of the pole piece and the nitrile groups of the initiator in the electrolyte are subjected to a complex reaction to form a poly-lithium compound, and the mixture has a glass transition characteristic and has the function of a curing interface at a certain temperature and time, so that the solid interface is formed on the surface of the pole piece, and the manufactured lithium ion battery has high hardness and high mechanical strength.
2. The solid interface is single-phase, the transmission of ions and electrons does not need to overcome the threshold of interface energy, the solid interface is stable, and the service life is greatly prolonged.
3. Due to the fixed interface formed, there is no risk of leakage and burning even if the battery is broken.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the arrangement of pole pieces and coating;
fig. 2 is a layout view of a battery case and battery tabs;
fig. 3 is a structural schematic diagram of a structure of a novel high-capacity solid-state lithium ion battery.
Detailed Description
Embodiments of the present invention will now be described with reference to the accompanying drawings.
Examples
The specific implementation manner of the invention is shown in fig. 1 to 3, and the manufacturing method of the novel high-capacity solid-state lithium ion battery comprises the following steps:
step 1: the coating 2 is firstly coated on the surface of the pole piece. The large-scale pole piece comprises a positive pole piece 1 and a negative pole piece 3, the length of the positive pole piece and the length of the negative pole piece are both at least 500mm, and the width dimension of the positive pole piece and the width dimension of the negative pole piece are at least 300 mm. The coating 2 contains cations in a high valence state of the solid electrolyte. Specifically, the coating layer 2 contains at least one material selected from the group consisting of LLZO (lanthanum lithium zirconate), LATP (titanium aluminum lithium phosphate), lithium nitride, lithium phosphate, lithium fluoride, silicon oxide, silicone, PVDF-HFP (polyvinylidene fluoride), PMMA (polymethyl methacrylate), PEO (polyethylene oxide), and acrylic. The thickness of the coating 2 is 0.1-100 μm. The coating 2 is coated on one side or both sides of the pole piece. The coating layer 2 may be coated on only one of the positive electrode tab 1 and the negative electrode tab 3. In this embodiment, the coating layer 2 is coated on both the front and back surfaces of the positive electrode sheet 1 and the negative electrode sheet 3.
Step 2: the positive electrode plate 1 and the negative electrode plate 3 are respectively connected with corresponding battery tabs 6 before being arranged in the battery shell 5. When the positive electrode tab 1 and the negative electrode tab 3 coated with the coating layer 2 are mounted in the battery case 5, the positive electrode tab 1 and the negative electrode tab 3 are separated by the separator 4. Both surfaces of the positive electrode sheet 1 and the negative electrode sheet 3 facing the separator 4 are bonded to the separator 4 through the coating layer 2. The positive electrode sheet 1, the separator 4, and the negative electrode sheet 3 are stacked in this order and are all located in the battery case 5.
And step 3: encapsulating the battery case 5.
And 4, step 4: an electrolyte is injected into the battery case 5. The initiator in the electrolyte contains nitrile groups.
And 5: and sequentially carrying out activation, baking and microwave vibration on the battery, wherein the battery is turned over during the microwave vibration. In the process, high-valence cations of the solid electrolyte in the coating 2 on the positive plate 1 and the negative plate 3 and nitrile groups contained in an electrolyte initiator perform a complex reaction to form a poly-lithium compound. The reaction temperature of the complex reaction is 30-100 ℃, and the reaction time is 0.5-20 hours. Wherein the nitrile group includes at least one of a mononitrile, a dinitrile, a cyclic nitrile and a phosphazene. The mononitrile can be selected from butyronitrile or propionitrile, the dinitrile can be selected from butanedinitrile or adiponitrile, the cyclic nitrile can be selected from benzonitrile, and the phosphazene can be selected from phosphotrieitrile. In this embodiment, when a solid interface is formed on the surface of the pole piece, an inorganic compound layer, an organic layer and an organic lithium carbonate compound layer are sequentially formed on the surface of the pole piece at different potentials, so as to form a multilayer lithium polymer as the solid interface; wherein the organic layer is a non-carbonate organolithium compound; the surface of the pole piece, the inorganic compound layer, the organic compound layer and the organic lithium carbonate compound layer are sequentially arranged. For example, the inorganic compound layer of the first layer is LIF, and the organic compound layer of the second layer is diethyllithium carbonate and butyllithium carbonate. And after the baking procedure is finished, curing is finished, so that a solid interface is formed on the surface of the pole piece.
Step 6: and finally, carrying out a vacuum-pumping sealing process on the battery.
The novel high-capacity solid-state lithium ion battery structure manufactured by the method comprises a battery shell 5, wherein electrolyte, a positive plate 1 and a negative plate 3 are arranged in the battery shell 5. The surface of the positive electrode sheet 1 and/or the negative electrode sheet 3 is partially or entirely covered with a solid interface layer. The solid interface layer is a poly lithium compound. A separator 4 is bonded between the positive electrode sheet 1 and the negative electrode sheet 3.
Specifically, the coating 2 coated on the surface of the large-sized pole piece (300mm or more and 500mm or more) can adopt the following mixture ratio: 40% of LLZO, 15% of DOL (1, 3-dioxolane), 20% of DME (ethylene glycol dimethyl ether), and the molar ratio of lithium phosphate: 5%, PMMA 5%, HFP 5%, CNT 10%, and adiponitrile 3%.
The present invention has been described in connection with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, and is intended to cover various modifications, equivalent combinations, which are made in accordance with the spirit of the present invention.
Claims (8)
1. A manufacturing method of a novel high-capacity solid lithium ion battery is characterized in that a coating (2) is coated on the surface of a pole piece; after the pole piece coated with the coating (2) is arranged in a battery shell (5), battery activation and baking processes are carried out, and solid electrolyte high-valence cations in the coating (2) and an initiator containing nitrile groups in electrolyte in the battery shell (5) are subjected to a complexing reaction to form a poly-lithium compound, so that a solid interface is formed on the surface of the pole piece; and finally, carrying out a vacuum-pumping sealing process on the battery.
2. The manufacturing method of the novel high-capacity solid-state lithium ion battery according to claim 1, wherein the reaction temperature of the complexation reaction is 30-100 ℃, and the reaction time is 0.5-20 hours; and between the baking process and the vacuumizing and sealing process, performing microwave vibration and overturning on the battery.
3. The manufacturing method of the novel high-capacity solid-state lithium ion battery according to claim 1, wherein the pole piece comprises a positive pole piece (1) and a negative pole piece (3); when the positive plate (1) and the negative plate (3) coated with the coating (2) are installed in a battery shell (5), the positive plate (1) and the negative plate (3) are separated through the diaphragm (4), and the positive plate (1) and the negative plate (3) are both bonded with the diaphragm (4) through the coating (2).
4. The manufacturing method of the novel high-capacity solid-state lithium ion battery according to claim 3, wherein the pole piece is connected with the battery tab (6) before being installed in the battery shell (5), then the pole piece and the diaphragm (4) are assembled in the battery shell (5), and then the pole piece is subjected to packaging, electrolyte injection, activation and baking in sequence to complete solidification, so that a solid interface is formed on the surface of the pole piece.
5. The method of claim 1, wherein the coating (2) comprises lanthanum lithium LLZO zirconate, lithium aluminum titanium LATP phosphate, Li3At least one of lithium N-nitride, lithium phosphate, lithium fluoride, silicon oxide, organosilicon, PVDF, PMMA, PEO and acrylic acid; the nitrile group in the initiator comprises at least one of mononitrile, dinitrile, cyclic nitrile and phosphazene.
6. The manufacturing method of the novel high-capacity solid-state lithium ion battery according to claim 5, wherein when the surface of the pole piece forms the solid interface, the surface of the pole piece sequentially forms an inorganic compound layer, an organic compound layer and an organic lithium carbonate compound layer under different potentials, so that a multilayer poly-lithium compound is formed as the solid interface; the surface of the pole piece, the inorganic compound layer, the organic compound layer and the organic lithium carbonate compound layer are sequentially arranged.
7. The manufacturing method of the novel high-capacity solid-state lithium ion battery according to claim 1, wherein the thickness of the coating (2) is 0.1-100 μm.
8. The manufacturing method of the novel high-capacity solid-state lithium ion battery according to claim 1, wherein the coating (2) is coated on one side or both sides of the pole piece.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011102628A1 (en) * | 2011-05-27 | 2012-11-29 | Li-Tec Battery Gmbh | Electrochemical cell |
| CN103474620A (en) * | 2013-09-16 | 2013-12-25 | 向勇 | Solid-state lithium ion electrode, solid-state lithium ion battery and preparation method of solid-state lithium ion electrode |
| CN108110324A (en) * | 2017-11-17 | 2018-06-01 | 中国科学院深圳先进技术研究院 | A kind of preparation method of solid lithium ion battery |
| CN108987798A (en) * | 2018-06-22 | 2018-12-11 | 清华大学深圳研究生院 | A kind of integration all solid lithium metal battery |
| CN110429329A (en) * | 2019-08-15 | 2019-11-08 | 湖南立方新能源科技有限责任公司 | A kind of preparation method and all-solid sodium ion battery of all-solid sodium ion battery |
| CN110943250A (en) * | 2018-09-21 | 2020-03-31 | 宁德新能源科技有限公司 | Electrolyte and lithium ion battery containing electrolyte |
| CN111816925A (en) * | 2020-08-14 | 2020-10-23 | 中南大学 | Solid-state battery and preparation method thereof |
-
2021
- 2021-02-09 CN CN202110177413.7A patent/CN112993410A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011102628A1 (en) * | 2011-05-27 | 2012-11-29 | Li-Tec Battery Gmbh | Electrochemical cell |
| CN103474620A (en) * | 2013-09-16 | 2013-12-25 | 向勇 | Solid-state lithium ion electrode, solid-state lithium ion battery and preparation method of solid-state lithium ion electrode |
| CN108110324A (en) * | 2017-11-17 | 2018-06-01 | 中国科学院深圳先进技术研究院 | A kind of preparation method of solid lithium ion battery |
| CN108987798A (en) * | 2018-06-22 | 2018-12-11 | 清华大学深圳研究生院 | A kind of integration all solid lithium metal battery |
| CN110943250A (en) * | 2018-09-21 | 2020-03-31 | 宁德新能源科技有限公司 | Electrolyte and lithium ion battery containing electrolyte |
| CN110429329A (en) * | 2019-08-15 | 2019-11-08 | 湖南立方新能源科技有限责任公司 | A kind of preparation method and all-solid sodium ion battery of all-solid sodium ion battery |
| CN111816925A (en) * | 2020-08-14 | 2020-10-23 | 中南大学 | Solid-state battery and preparation method thereof |
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