CN107394273B - Flexible thin film battery, preparation method thereof, circuit board and electronic product - Google Patents
Flexible thin film battery, preparation method thereof, circuit board and electronic product Download PDFInfo
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- CN107394273B CN107394273B CN201710350026.2A CN201710350026A CN107394273B CN 107394273 B CN107394273 B CN 107394273B CN 201710350026 A CN201710350026 A CN 201710350026A CN 107394273 B CN107394273 B CN 107394273B
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- current collector
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- active layer
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- 239000010409 thin film Substances 0.000 title claims abstract description 95
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229920000307 polymer substrate Polymers 0.000 claims abstract description 62
- 239000003054 catalyst Substances 0.000 claims description 64
- 239000002002 slurry Substances 0.000 claims description 57
- 238000007747 plating Methods 0.000 claims description 56
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- -1 polyethylene terephthalate Polymers 0.000 claims description 39
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 229910052782 aluminium Inorganic materials 0.000 claims description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 23
- 229910052802 copper Inorganic materials 0.000 claims description 23
- 239000010949 copper Substances 0.000 claims description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 22
- 229920001721 polyimide Polymers 0.000 claims description 22
- 239000004593 Epoxy Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 20
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 16
- 230000003197 catalytic effect Effects 0.000 claims description 16
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 12
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 12
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 12
- 239000004800 polyvinyl chloride Substances 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 8
- 229910052763 palladium Inorganic materials 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 239000004642 Polyimide Substances 0.000 claims description 7
- 229920006335 epoxy glue Polymers 0.000 claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 5
- 239000007774 positive electrode material Substances 0.000 claims description 5
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 229910021383 artificial graphite Inorganic materials 0.000 claims description 4
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 4
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000012462 polypropylene substrate Substances 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 claims description 3
- PFYQFCKUASLJLL-UHFFFAOYSA-N [Co].[Ni].[Li] Chemical compound [Co].[Ni].[Li] PFYQFCKUASLJLL-UHFFFAOYSA-N 0.000 claims description 3
- FRMOHNDAXZZWQI-UHFFFAOYSA-N lithium manganese(2+) nickel(2+) oxygen(2-) Chemical compound [O-2].[Mn+2].[Ni+2].[Li+] FRMOHNDAXZZWQI-UHFFFAOYSA-N 0.000 claims description 3
- VYKXQOYUCMREIS-UHFFFAOYSA-N methylhexahydrophthalic anhydride Chemical group C1CCCC2C(=O)OC(=O)C21C VYKXQOYUCMREIS-UHFFFAOYSA-N 0.000 claims description 3
- 229910021382 natural graphite Inorganic materials 0.000 claims description 3
- 229910021384 soft carbon Inorganic materials 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 229910021385 hard carbon Inorganic materials 0.000 claims description 2
- 239000002931 mesocarbon microbead Substances 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 229910052723 transition metal Inorganic materials 0.000 claims description 2
- 150000003624 transition metals Chemical class 0.000 claims description 2
- 239000013543 active substance Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 18
- 239000002184 metal Substances 0.000 description 18
- 239000003792 electrolyte Substances 0.000 description 17
- 239000002033 PVDF binder Substances 0.000 description 16
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 16
- 239000000126 substance Substances 0.000 description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- 239000006230 acetylene black Substances 0.000 description 14
- 239000008367 deionised water Substances 0.000 description 13
- 229910021641 deionized water Inorganic materials 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 12
- 239000010408 film Substances 0.000 description 12
- 238000002156 mixing Methods 0.000 description 12
- 239000002904 solvent Substances 0.000 description 12
- 238000003756 stirring Methods 0.000 description 12
- 239000012528 membrane Substances 0.000 description 11
- 238000004806 packaging method and process Methods 0.000 description 11
- 239000004205 dimethyl polysiloxane Substances 0.000 description 9
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 9
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- 239000006258 conductive agent Substances 0.000 description 8
- 238000001035 drying Methods 0.000 description 8
- 238000007639 printing Methods 0.000 description 8
- 238000007650 screen-printing Methods 0.000 description 8
- 238000005406 washing Methods 0.000 description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 7
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- 238000007788 roughening Methods 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 238000007641 inkjet printing Methods 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 239000011257 shell material Substances 0.000 description 5
- 239000004952 Polyamide Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- 239000007773 negative electrode material Substances 0.000 description 4
- 229920002647 polyamide Polymers 0.000 description 4
- 229920006254 polymer film Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 238000009210 therapy by ultrasound Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000011267 electrode slurry Substances 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 239000003273 ketjen black Substances 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- HFCVPDYCRZVZDF-UHFFFAOYSA-N [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O Chemical compound [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O HFCVPDYCRZVZDF-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000013461 design 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
- 238000009459 flexible packaging Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
Classifications
-
- 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a flexible thin film battery, a preparation method thereof, a circuit board and an electronic product comprising the circuit board. The flexible thin film battery comprises a positive electrode and a negative electrode, wherein the positive electrode comprises a positive current collector and a positive active layer, the negative electrode comprises a negative current collector and a negative active layer, the positive current collector and/or the negative current collector are/is plated on the surface of a polymer substrate, the positive active layer is combined on the outer surface of the positive current collector, and the negative active layer is combined on the outer surface of the negative current collector. According to the flexible thin film battery, the current collector is plated on the surface of the polymer substrate, so that the flexible thin film battery is endowed with excellent flexibility, and the flexible thin film battery can be integrated on a polymer substrate circuit board. In addition, the preparation method of the flexible thin film battery can effectively ensure the stable performance of the flexible thin film battery.
Description
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to a flexible thin film battery, a preparation method thereof, a circuit board and an electronic product.
Background
With the progress of science and technology, the miniaturization trend of various electronic products is increasingly obvious while the electronic products are greatly enriched. In particular to the fields of wearable equipment, medical instruments, precise instruments and meters and the like. Higher requirements are put forward on a key component circuit board in an electronic product, and the research and development of a small-size multifunctional highly-integrated circuit board is urgently needed. The battery is used as an important device in the circuit board and provides necessary electric energy for other components to complete functions such as recording time and the like. In recent years, batteries have become the first choice for mobile energy storage, particularly lithium ion batteries, which are widely used in people's daily life and are ideal energy sources in various electronic products at present. However, in the circuit board, the battery is externally arranged to supply power to other components, which wastes a lot of space, severely limits the high integration of the circuit board, and is not beneficial to the packaging of the complex circuit board. Therefore, the external battery limits the development of the circuit board to miniaturization, integration and flexibility. At present, few reports exist on integrating batteries on circuit boards. Moreover, the existing battery is rigid and cannot be bent, which seriously affects the development of flexible electronic products.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a flexible thin film battery and a preparation method thereof, and solves the defect that the conventional battery can only be used as an external battery of a circuit board.
The invention also aims to provide a circuit board and an electronic product containing the circuit board, and solves the problem that the conventional circuit board adopts an external battery to supply power to components.
In order to achieve the above object, according to one aspect of the present invention, a flexible thin film battery is provided. The flexible thin film battery comprises a positive electrode and a negative electrode, wherein the positive electrode comprises a positive current collector and a positive active layer, the negative electrode comprises a negative current collector and a negative active layer, the positive current collector and/or the negative current collector are plated on the surface of a polymer substrate, the positive active layer is combined on the outer surface of the positive current collector, and the negative active layer is combined on the outer surface of the negative current collector.
In another aspect of the invention, a method for preparing a flexible thin film battery is provided. The preparation method comprises the following steps:
coating a catalyst layer for forming a current collector on the surface of a polymer substrate;
placing the polymer substrate coated with the catalytic layer in a plating solution for plating a positive current collector to plate the positive current collector on the catalytic layer, or/and placing the polymer substrate coated with the catalytic layer in a plating solution for plating a negative current collector to plate the negative current collector on the catalytic layer;
coating positive active layer slurry on the surface of the positive current collector to form a positive active layer;
coating negative active layer slurry on the surface of the negative current collector to form a negative active layer;
and assembling the positive electrode containing the positive electrode active layer and/or the negative electrode containing the negative electrode active layer according to a thin film battery assembling method.
In yet another aspect of the present invention, a wiring board is provided. The circuit board comprises a polymer substrate and a circuit pattern formed on the polymer substrate, wherein a flexible thin film battery is integrated on the circuit pattern, and the flexible thin film battery is the flexible thin film battery or the flexible thin film battery prepared by the preparation method.
In another aspect of the invention, an electronic product is provided. The electronic product comprises a circuit board, and the circuit board is the circuit board disclosed by the invention.
Compared with the prior art, the flexible thin film battery has the advantages that the current collector is plated on the surface of the polymer substrate, so that the flexible thin film battery is endowed with excellent flexibility, the flexible thin film battery can be integrated on a polymer substrate circuit board, and the defect that the conventional battery can only supply power to components in an external mode is effectively overcome.
According to the preparation method of the flexible thin film battery, the positive current collector or/and the negative current collector is/are directly plated on the surface of the polymer substrate and then directly assembled, so that the assembled flexible thin film battery is effectively guaranteed to have excellent flexibility and can be integrated on a polymer substrate circuit board. In addition, the preparation method can effectively ensure the stable performance of the flexible thin film battery.
The circuit board and the electronic product containing the circuit board are integrated with the flexible thin film battery, so that the space of the circuit board is effectively saved, the integration level of the circuit board is improved, and the circuit board is miniaturized and flexible.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In one aspect, embodiments of the present invention provide a flexible thin film battery. The flexible film battery comprises a positive electrode and a negative electrode, and of course, other components of the conventional flexible film battery, such as a diaphragm and an electrolyte, a packaging shell and the like.
The positive electrode comprises a positive electrode current collector and a positive electrode active layer combined on the surface of the positive electrode current collector. The negative electrode comprises a negative electrode current collector and a negative electrode active layer combined on the surface of the negative electrode current collector, and the positive electrode current collector and/or the negative electrode current collector are/is plated on the surface of a polymer substrate, namely, the flexible thin film battery has the following three structures:
the first structure is as follows: the positive electrode current collector of the positive electrode is plated on the surface of the polymer substrate, and the positive electrode active layer is combined on the outer surface of the positive electrode current collector. At this time, the anode may be a conventional anode.
The second structure is as follows: the negative current collector of the negative electrode is plated on the surface of the polymer substrate, and the negative active layer is combined on the outer surface of the negative current collector. At this time, the positive electrode may be a conventional positive electrode.
A third structure: the positive electrode current collector of the positive electrode is plated on the surface of the polymer substrate, and the positive electrode active layer is combined on the outer surface of the positive electrode current collector. Meanwhile, the negative electrode current collector of the negative electrode is plated on the surface of another polymer substrate, and the negative electrode active layer is bonded on the outer surface of the negative electrode current collector. At this time, the kinds of polymer substrates for supporting the positive and negative electrode current collectors may be the same or different.
Regardless of the structure of the flexible thin film battery, in one embodiment, the positive current collector is any one of an aluminum plated layer, a copper plated layer, and a nickel plated layer. The thickness of the positive current collector is consistent with that of the flexible thin film battery current collector. In another embodiment, the positive electrode active layer includes a positive electrode active material, a conductive agent, and a binder. The content ratio of the positive electrode active layer including the positive electrode active material, the conductive agent and the binder may be a content ratio of a conventional positive electrode active layer, such as a mass ratio of the positive electrode active material, the conductive agent and the binder of 8:1: 1. In a specific embodiment, the positive electrode active material may be, but not limited to, at least one of lithium cobaltate, lithium iron phosphate, lithium nickel manganese oxide, lithium nickel cobalt aluminate, and manganese dioxide. The conductive agent may be, but not limited to, conductive carbon such as acetylene black, Super P, ketjen black, carbon nanotubes, graphene, and the like. The binder may be, but is not limited to, at least one of polyvinylidene fluoride, polytetrafluoroethylene, carboxymethyl cellulose, polyvinyl alcohol. And the thickness of the positive active layer accords with the thickness of the positive active layer of the flexible thin film battery.
In another embodiment, the negative electrode current collector is any one of a copper plating layer, an aluminum plating layer, and a nickel plating layer. The thickness of the negative current collector is consistent with that of the flexible film battery current collector. In yet another embodiment, the negative active layer includes a negative active material, a conductive agent, and a binder. The content ratio of the negative electrode active layer including the negative electrode active material, the conductive agent, and the binder may be a content ratio of a conventional negative electrode active layer, such as a mass ratio of the negative electrode active material, the conductive agent, and the binder of 8:1: 1. In particular embodiments, the negative active material may be, but is not limited to, at least one of artificial graphite, natural graphite, mesocarbon microbeads, lithium titanate, soft carbon, hard carbon, carbon silicon, silicon-based alloys, tin-based alloys. The conductive agent may be, but not limited to, conductive carbon such as acetylene black, Super P, ketjen black, carbon nanotubes, graphene, and the like. The binder may be, but is not limited to, at least one of polyvinylidene fluoride, polytetrafluoroethylene, carboxymethyl cellulose, polyvinyl alcohol. The thickness of the negative active layer is consistent with that of the negative active layer of the flexible film battery.
The polymer substrate for loading the positive current collector and/or the negative current collector is any one of an epoxy substrate, a polyimide substrate, a polyethylene terephthalate substrate, a polyvinyl chloride substrate, a polyethylene substrate, a polystyrene substrate and a polypropylene substrate. The polymer substrate not only has excellent flexibility, but also can be directly used as a substrate of a circuit board after the current collector is plated on the surface of the polymer substrate to endow the flexible thin film battery with excellent flexibility.
The above-described assembly relationship between the separator and the positive and negative electrodes included in the flexible thin film battery may be that of a conventional battery such as a lithium ion battery. In one embodiment, the separator may be, but is not limited to, polypropylene, polyethylene, polypropylene/polyethylene multilayer composite film, ceramic-coated polymer film, PVDF-coated polymer film, polyimide, polyamide, etc. separator
The electrolyte contained in the flexible thin film battery can also be a common electrolyte, such as a lithium ion battery electrolyte. The packaging shell of the flexible film battery can be a flexible packaging shell, and the packaging shell can be made of polydimethylsiloxane, polyamide, epoxy resin, styrene-butadiene rubber, chloroprene rubber and the like.
Therefore, the flexible thin film battery plates the current collector on the surface of the polymer substrate, and the flexible thin film battery is endowed with excellent flexibility, so that the flexible thin film battery can be integrated on a polymer substrate circuit board.
Correspondingly, the embodiment of the invention also provides a preparation method of the flexible thin film battery. The preparation method comprises the following steps:
s01, coating a catalyst layer for forming a current collector on the surface of the polymer substrate;
s02, placing the polymer substrate coated with the catalytic layer in a plating solution for plating a positive current collector to plate the positive current collector on the catalytic layer, or/and placing the polymer substrate coated with the catalytic layer in a plating solution for plating a negative current collector to plate the negative current collector on the catalytic layer;
s03, coating positive active layer slurry on the surface of the positive current collector to form a positive active layer;
s04, coating negative active layer slurry on the surface of the negative current collector to form a negative active layer;
and S05, assembling the positive electrode containing the positive electrode active layer and/or the negative electrode containing the negative electrode active layer according to a thin film battery assembling method.
Specifically, in step S01, the catalyst layer for forming the current collector is coated on the surface of the polymer substrate, and contains a catalyst for catalyzing the generation of the current collector, and after the plating solution for plating the positive electrode current collector is contacted with the catalyst, the catalyst plays a role of catalysis, so that the plating solution generates the catalyst on the surface of the catalyst layer, thereby forming the current collector. In one embodiment, the catalyst layer comprises a catalyst, epoxy glue and a curing accelerator component, and the mass content ratio of the catalyst to the epoxy glue to the curing accelerator is 1 (0.5-1) to (0.1-0.2). The catalyst can be effectively and stably combined on the surface of the polymer substrate by controlling the contents of the catalyst component and other components, so that the catalyst can play a catalytic role, and a current collector layer is generated on the surface of the catalyst layer by the plating solution. In a specific embodiment, the catalyst is any one of an alloy of a fourth period transition metal and palladium, such as colloidal palladium, palladium-copper alloy particles, palladium-nickel alloy particles, and the like. The catalyst not only has efficient catalytic action, but also has stable catalytic performance and low cost. The curing accelerator is selected from methyl hexahydrophthalic anhydride, so that the epoxy glue is fixed, and the formation of a catalyst layer and the stability of a structure are improved.
In addition, a method of forming a catalyst layer of a current collector is to coat slurry for forming the catalyst layer on a surface of a polymer substrate. The coating method may be screen printing, printer printing, or the like, and any method of coating the slurry on the surface of the polymer substrate may be used as long as the method can form a patterned catalyst layer corresponding to the current collector. The slurry for forming the catalyst layer is a mixed slurry formed by using a solvent for the components contained in the catalyst layer, and the solvent may be a conventional solvent used for screen printing or printer printing.
Wherein the polymer substrate may be a conventional polymer wiring board, and the polymer substrate as described above is any one of an epoxy substrate, a polyimide substrate, a polyethylene terephthalate substrate, a polyvinyl chloride substrate, a polyethylene substrate, a polystyrene substrate, and a polypropylene substrate.
In a further embodiment, the polymeric substrate is pretreated prior to its surface being coated with the catalyst layer, if it has not been pretreated, e.g., washed. In one embodiment, the pre-treatment of the polymer substrate includes a washing treatment and a surface roughening treatment. In a specific embodiment, the washing treatment method may be ultrasonic cleaning of the polymer substrate with acetone, ethanol and deionized water in sequence to remove impurities on the surface of the polymer substrate sufficiently. The surface roughening treatment may be, but is not limited to, roughening the polymer substrate using plasma, laser, chemical means. And the surface of the polymer substrate has certain roughness through coarsening treatment, so that the binding force between the catalyst layer and the current collecting coating and the polymer substrate is improved. The chemical roughening treatment may be a conventional chemical roughening of the surface of the polymer substrate.
In the step S02, there are three schemes for plating the current collector on the surface of the polymer substrate:
the first scheme is as follows: only the positive current collector is plated on the polymer substrate. At this time, the plating solution may be a plating solution for plating the positive electrode current collector, such as a plating aluminum solution or the like.
The second scheme is as follows: only the negative current collector is plated on the polymer substrate. At this time, the plating solution may be a plating solution for plating the negative electrode current collector, such as a copper plating solution.
In the third scheme: and plating a positive current collector on one polymer substrate and plating a negative current collector on the surface of the other polymer substrate. In this scheme, there is no precedence order for plating the positive current collector and plating the negative current collector.
Regardless of which of the above three schemes is adopted, after the polymer substrate formed with the current collector catalyst layer is placed in the corresponding plating solution for plating the corresponding current collector, the catalyst plays a catalytic role due to the presence of the catalyst, so that the current collector is directly generated on the catalyst layer. Thus, the pattern of the catalyst layer determines the corresponding current collector pattern.
In the case where the positive electrode collector is plated in step S02 in step S03, the positive electrode active layer slurry is directly applied to the surface of the positive electrode collector to form a positive electrode layer. The positive electrode slurry includes the components contained in the positive electrode active layer described in the flexible thin film battery, and the components contained in the positive electrode active layer are not described herein again for the sake of brevity. The positive active layer slurry is a slurry formed by dispersing the components contained in the positive active layer into a solvent to a certain concentration, and the concentration of the solvent and the slurry can be the conventional solvent and concentration of the positive slurry such as the positive slurry of the lithium ion battery.
In step S03, when the positive electrode collector is plated in step S02, the positive electrode active layer slurry is directly applied to the surface of the positive electrode collector to form a positive electrode active layer. The positive electrode slurry includes the components contained in the positive electrode active layer described in the flexible thin film battery, and the components contained in the positive electrode active layer are not described herein again for the sake of brevity. The positive active layer slurry is a slurry formed by dispersing the components contained in the positive active layer into a solvent to a certain concentration, and the concentration of the solvent and the slurry can be the conventional solvent and concentration of the positive slurry such as the positive slurry of the lithium ion battery. The manner of coating the positive active layer slurry may be a conventional manner of coating the positive active layer slurry.
In the case where the negative electrode current collector is plated in step S02, the negative electrode active layer slurry is directly applied to the surface of the negative electrode current collector to form a negative electrode active layer in step S04. The negative electrode slurry includes the components contained in the negative electrode active layer described in the flexible thin film battery, and the components contained in the negative electrode active layer are not described herein again for the sake of brevity. The negative active layer slurry is a slurry formed by dispersing the components contained in the negative active layer into a solvent to a certain concentration, and the solvent and the slurry concentration can be the conventional solvent and concentration of the negative slurry such as the negative slurry of the lithium ion battery. The manner of applying the negative active layer slurry may be a conventional manner of applying the negative active layer slurry.
In addition, the steps S03 and S04 have no sequence.
In the step S05, in the assembling process according to the thin film battery assembling method, the flexible thin film battery is assembled according to the three structures described above, specifically:
when the above first structure of the flexible thin film battery is adopted, the positive electrode current collector coated with the positive electrode active layer prepared in the above steps S01 to S03 is sealed with a conventional negative electrode, a separator, an electrolyte, and the like, to obtain the flexible thin film battery.
When it is the above second structure of the flexible thin film battery, at this time, the negative electrode current collector coated with the negative electrode active layer prepared in the above steps S01, S02, and S04 is packaged with a conventional positive electrode, and a separator, an electrolyte, and the like, to obtain the flexible thin film battery.
In the case of the third structure of the flexible thin film battery, the negative electrode current collector coated with the negative electrode active layer and the positive electrode current collector coated with the positive electrode active layer, which are prepared in steps S01 to S04, respectively, and the separator, the electrolyte, and the like are encapsulated to obtain the flexible thin film battery.
Wherein the separator, the electrolyte and the encapsulated case are as described above for the flexible thin film battery. Specifically, the separator is selected from, but not limited to, polypropylene, polyethylene, polypropylene/polyethylene multilayer composite film, ceramic-coated polymer film, PVDF-coated polymer film, polyimide, polyamide, and the like. The packaging shell material is selected from but not limited to polydimethylsiloxane, polyamide, epoxy resin, styrene-butadiene rubber and chloroprene rubber. The electrolyte may also be a commonly used electrolyte, such as a lithium ion battery electrolyte.
Therefore, according to the preparation method of the flexible thin film battery, the positive current collector or/and the negative current collector is/are directly plated on the surface of the polymer substrate and then directly assembled, so that the assembled flexible thin film battery is effectively guaranteed to have excellent flexibility, can be integrated on a polymer substrate circuit board, and can be guaranteed to have stable performance.
On the basis of the flexible thin-film battery and the preparation method thereof, the embodiment of the invention also provides a circuit board. The wiring board includes a polymer substrate and a wiring pattern formed on the polymer substrate. The flexible thin film battery is integrated on the circuit board.
The circuit board is a conventional circuit board, and comprises a substrate and a circuit pattern formed on the substrate. The substrate is a polymer substrate, and the circuit pattern is formed on the polymer substrate. In one embodiment, the polymer substrate is the same as the polymer substrate contained in the above flexible thin film battery, such as any one of an epoxy substrate, a polyimide substrate, a polyethylene terephthalate substrate, a polyvinyl chloride substrate, a polyethylene substrate, a polystyrene substrate, and a polypropylene substrate. Thus, the above-mentioned flexible thin film battery integrated on the above-mentioned circuit board is integrated in the following manner: the positive electrode current collector or/and the negative electrode current collector of the flexible thin film battery are directly plated on the substrate of the circuit board and are integrated into the circuit pattern contained in the circuit board according to the design requirement.
Based on the circuit board, the embodiment of the invention also provides an electronic product. The electronic product comprises a circuit board, and the circuit board is the circuit board.
Therefore, the circuit board and the electronic product containing the circuit board are integrated with the flexible thin film battery, so that the space of the circuit board is effectively saved, the integration level of the circuit board is improved, and the circuit board is miniaturized and flexible.
The flexible thin film battery, the preparation method thereof and the application thereof according to the embodiment of the invention will be further described in detail with reference to specific examples.
Example 1
The embodiment provides a flexible thin film battery, flexible thin film battery includes anodal mass flow body and negative current collector, anodal mass flow body and negative current collector plate respectively are at the epoxy board surface. Coating a positive active layer on the surface of the positive current collector to form a positive electrode; and coating a negative active layer on the surface of the negative current collector to form a negative electrode. And packaging the positive electrode, the negative electrode, the diaphragm and the electrolyte into the flexible thin film battery by adopting polydimethylsiloxane.
Example 1 a flexible thin film battery was prepared as follows:
s11: carrying out ultrasonic treatment on an epoxy substrate with a certain size in acetone, ethanol and deionized water for 15min, putting the epoxy substrate into a drying oven to be dried for 2h at 70 ℃, then putting the epoxy substrate into a potassium hydroxide solution to coarsen for 30min, washing the epoxy substrate clean with deionized water, and printing a 2cm multiplied by 2cm catalyst pattern on the epoxy substrate by a screen printing or ink-jet printing method; wherein the catalyst is colloidal palladium;
s12: putting the epoxy-based plate coated with the catalyst into a chemical copper plating or chemical aluminum plating solution, and obtaining a patterned metal copper current collector or an aluminum current collector on the epoxy substrate after 30 min;
s13: mixing lithium iron phosphate, acetylene black and polyvinylidene fluoride in N-methyl pyrrolidone according to the ratio of 8:1:1, stirring for 3 hours to prepare slurry, and coating the slurry on the surface of the metal aluminum by using a coating machine to form a positive electrode;
s14: mixing natural graphite, acetylene black and polyvinylidene fluoride in N-methyl pyrrolidone according to the ratio of 8:1:1, stirring for 3 hours to prepare slurry, and coating the slurry on the surface of the metal copper by using a coating machine to form a negative electrode;
s15: the positive and negative electrodes were assembled into a battery in a glove box using a ceramic-coated polymer separator, and encapsulated with polydimethylsiloxane.
Example 2
The embodiment provides a flexible thin film battery, flexible thin film battery includes anodal mass flow body and negative current collector, anodal mass flow body and negative current collector plate respectively are at the epoxy board surface. Coating a positive active layer on the surface of the positive current collector to form a positive electrode; and coating a negative active layer on the surface of the negative current collector to form a negative electrode. And packaging the positive electrode, the negative electrode, the diaphragm and the electrolyte into the flexible thin film battery by adopting polydimethylsiloxane.
Example 2 a flexible thin film battery was prepared as follows:
s21: carrying out ultrasonic treatment on an epoxy substrate with a certain size in acetone, ethanol and deionized water for 15min, putting the epoxy substrate into a drying oven to be dried for 2h at 70 ℃, then putting the epoxy substrate into a potassium hydroxide solution to coarsen for 30min, washing the epoxy substrate clean with deionized water, and printing a 2cm multiplied by 2cm catalyst pattern on the epoxy substrate by a screen printing or ink-jet printing method; wherein the catalyst is palladium-copper alloy nanoparticles;
s22: putting the epoxy-based plate coated with the catalyst into a chemical copper plating or chemical aluminum plating solution, and obtaining a patterned metal copper current collector or an aluminum current collector on the epoxy substrate after 30 min;
s23: mixing lithium cobaltate, acetylene black and polyvinylidene fluoride in N-methyl pyrrolidone according to the ratio of 8:1:1, stirring for 3 hours to prepare slurry, and coating the slurry on the surface of the metal aluminum by using a coating machine to form a positive electrode;
s24: mixing lithium titanate, acetylene black and polyvinylidene fluoride in N-methyl pyrrolidone according to the ratio of 8:1:1, stirring for 3 hours to prepare slurry, and coating the slurry on the surface of the metal copper by using a coating machine to form a negative electrode;
s25: the positive and negative electrodes were assembled into a battery in a glove box using a ceramic-coated polymer separator, and encapsulated with polydimethylsiloxane.
Example 3
The embodiment provides a flexible thin film battery, flexible thin film battery includes anodal mass flow body and negative current collector, anodal mass flow body and negative current collector plate respectively on the polyimide surface. Coating a positive active layer on the surface of the positive current collector to form a positive electrode; and coating a negative active layer on the surface of the negative current collector to form a negative electrode. And packaging the positive electrode, the negative electrode, the diaphragm and the electrolyte into the flexible thin film battery by adopting polydimethylsiloxane.
Example 3 a flexible thin film battery was prepared as follows:
s31: ultrasonically treating a polyimide film with a certain size in acetone, ethanol and deionized water for 15min, drying the polyimide film in a drying oven at 70 ℃ for 2h, then roughening the polyimide film in a potassium hydroxide solution for 30min, washing the polyimide film clean with deionized water, and printing a catalyst pattern of 2cm multiplied by 2cm on the polyimide film by a screen printing or ink-jet printing method; wherein the catalyst is colloidal palladium;
s32: putting the polyimide film coated with the catalyst into a chemical copper plating or chemical aluminum plating solution, and obtaining a patterned metal copper current collector or an aluminum current collector on the polyimide film after 30 min;
s33: mixing lithium iron phosphate, acetylene black and polyvinylidene fluoride in N-methyl pyrrolidone according to the ratio of 8:1:1, stirring for 3 hours to prepare slurry, and coating the slurry on the surface of the metal aluminum by using a coating machine to form a positive electrode;
s34: mixing artificial graphite, acetylene black and polyvinylidene fluoride in N-methyl pyrrolidone according to the ratio of 8:1:1, stirring for 3 hours to prepare slurry, and coating the slurry on the surface of the metal copper by using a coating machine to form a negative electrode;
s35: the positive and negative electrodes were assembled into a battery in a glove box using a ceramic-coated polymer separator, and encapsulated with polydimethylsiloxane.
Example 4
The embodiment provides a flexible thin film battery, flexible thin film battery includes anodal mass flow body and negative current collector, anodal mass flow body and negative current collector plate respectively on polyimide film surface. Coating a positive active layer on the surface of the positive current collector to form a positive electrode; and coating a negative active layer on the surface of the negative current collector to form a negative electrode. And packaging the positive electrode, the negative electrode, the diaphragm and the electrolyte into the flexible thin film battery by adopting dimethyl siloxane.
This example 4 a flexible thin film battery was prepared as follows:
s41: ultrasonically treating a polyimide film with a certain size in acetone, ethanol and deionized water for 15min, drying the polyimide film in a drying oven at 70 ℃ for 2h, then roughening the polyimide film in a potassium hydroxide solution for 30min, washing the polyimide film clean with deionized water, and printing a catalyst pattern of 2cm multiplied by 2cm on the polyimide film by a screen printing or ink-jet printing method; wherein the catalyst is palladium-nickel alloy nanoparticles;
s42: putting the polyimide film coated with the catalyst into a chemical copper plating or chemical aluminum plating solution, and obtaining a patterned metal copper current collector or an aluminum current collector on the polyimide film after 30 min;
s43: mixing lithium nickel manganese oxide, acetylene black and polyvinylidene fluoride in N-methyl pyrrolidone according to the ratio of 8:1:1, stirring for 3 hours to prepare slurry, and coating the slurry on the surface of the metal aluminum by using a coating machine to form a positive electrode;
s44: mixing soft carbon, acetylene black and polyvinylidene fluoride in N-methyl pyrrolidone according to the ratio of 8:1:1, stirring for 3 hours to prepare slurry, and coating the slurry on the surface of the metal copper by using a coating machine to form a negative electrode;
s45: the positive and negative electrodes were assembled into a battery in a glove box using a ceramic-coated polymer separator, and encapsulated with epoxy resin.
Example 5
The embodiment provides a flexible thin film battery, which comprises a positive current collector and a negative current collector, wherein the positive current collector and the negative current collector are respectively plated on the surface of a polyethylene terephthalate film. Coating a positive active layer on the surface of the positive current collector to form a positive electrode; and coating a negative active layer on the surface of the negative current collector to form a negative electrode. And packaging the positive electrode, the negative electrode, the diaphragm and the electrolyte into the flexible thin film battery by adopting dimethyl siloxane.
Example 5 a flexible thin film battery was prepared as follows:
s51: carrying out ultrasonic treatment on a polyethylene terephthalate membrane with a certain size in acetone, ethanol and deionized water for 15min, putting the polyethylene terephthalate membrane into a drying oven to be dried for 2h at 70 ℃, then putting the polyethylene terephthalate membrane into a potassium hydroxide solution to be coarsened for 30min, washing the polyethylene terephthalate membrane clean by using deionized water, and printing a catalyst pattern with the size of 2cm multiplied by 2cm on the polyethylene terephthalate membrane by a screen printing or ink-jet printing method; wherein the catalyst is colloidal palladium;
s52: putting the polyethylene terephthalate film coated with the catalyst into a chemical copper plating or chemical aluminum plating solution, and obtaining a patterned metal copper current collector or an aluminum current collector on the polyethylene terephthalate film after 30 min;
s53: mixing nickel cobalt lithium manganate, acetylene black and polyvinylidene fluoride in N-methyl pyrrolidone according to the ratio of 8:1:1, stirring for 3 hours to prepare slurry, and coating the slurry on the surface of the metal aluminum by using a coating machine to form a positive electrode;
s54: mixing carbon silicon, acetylene black and polyvinylidene fluoride in N-methyl pyrrolidone according to the ratio of 8:1:1, stirring for 3 hours to prepare slurry, and coating the slurry on the surface of the metal copper by using a coating machine to form a negative electrode;
s55: the positive and negative electrodes were assembled into a battery in a glove box using a ceramic-coated polymer separator, and encapsulated with polydimethylsiloxane.
Example 6
This embodiment provides a flexible thin film battery, flexible thin film battery includes anodal mass flow body and negative current collector, anodal mass flow body and negative current collector plate respectively on polyvinyl chloride membrane surface. Coating a positive active layer on the surface of the positive current collector to form a positive electrode; and coating a negative active layer on the surface of the negative current collector to form a negative electrode. And packaging the positive electrode, the negative electrode, the diaphragm and the electrolyte into the flexible thin film battery by adopting epoxy resin.
This example 6 a flexible thin film battery was prepared as follows:
s61: carrying out ultrasonic treatment on a polyvinyl chloride membrane with a certain size in acetone, ethanol and deionized water for 15min, putting the polyvinyl chloride membrane into a drying oven to be dried for 2h at 70 ℃, then putting the polyvinyl chloride membrane into a potassium hydroxide solution to be coarsened for 30min, washing the polyvinyl chloride membrane clean with the deionized water, and printing a catalyst pattern of 2cm multiplied by 2cm on the polyvinyl chloride membrane by a screen printing or ink-jet printing method; wherein the catalyst is palladium-nickel alloy nanoparticles;
s62: putting the polyvinyl chloride film coated with the catalyst into a chemical copper plating or chemical aluminum plating solution, and obtaining a patterned metal copper current collector or an aluminum current collector on the polyvinyl chloride film after 30 min;
s63: mixing nickel cobalt lithium aluminate, acetylene black and polyvinylidene fluoride in N-methyl pyrrolidone according to the ratio of 8:1:1, stirring for 3 hours to prepare slurry, and coating the slurry on the surface of the metal aluminum by using a coating machine to form a positive electrode;
s64: mixing artificial graphite, acetylene black and polyvinylidene fluoride in N-methyl pyrrolidone according to the ratio of 8:1:1, stirring for 3 hours to prepare slurry, and coating the slurry on the surface of the metal copper by using a coating machine to form a negative electrode;
s65: the positive and negative electrodes were assembled into a battery in a glove box using a ceramic-coated polymer separator, and encapsulated with epoxy resin.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a flexible thin film battery, includes anodal and negative pole, anodal includes the anodal mass flow body and positive active layer, the negative pole includes the negative current collector and negative active layer, its characterized in that: the surface of the polymer substrate is coated with a catalyst layer, the positive current collector and/or the negative current collector are/is plated on the surface of the catalyst layer, the positive active layer is combined on the outer surface of the positive current collector, and the negative active layer is combined on the outer surface of the negative current collector;
the flexible thin film battery is prepared by adopting the following method:
coating a catalyst layer for forming a current collector on the surface of a polymer substrate;
placing the polymer substrate coated with the catalyst layer in a plating solution for plating a positive current collector to plate the positive current collector on the catalyst layer, or/and placing the polymer substrate coated with the catalyst layer in a plating solution for plating a negative current collector to plate the negative current collector on the catalyst layer;
coating positive active layer slurry on the surface of the positive current collector to form a positive active layer;
coating negative active layer slurry on the surface of the negative current collector to form a negative active layer;
assembling the positive electrode containing the positive electrode active layer and/or the negative electrode containing the negative electrode active layer according to a thin film battery assembling method;
the catalyst layer comprises a catalyst, epoxy glue and a curing accelerator component, and the mass of the catalyst, the epoxy glue and the curing accelerator is 1 (0.5-1) to 0.1-0.2);
the catalyst is any one of colloidal palladium, palladium-copper alloy particles and palladium-nickel alloy particles; the curing accelerator is methyl hexahydrophthalic anhydride.
2. The flexible thin film battery of claim 1, wherein: the polymer substrate is any one of an epoxy substrate, a polyimide substrate, a polyethylene terephthalate substrate, a polyvinyl chloride substrate, a polyethylene substrate, a polystyrene substrate and a polypropylene substrate.
3. The flexible thin film battery according to claim 1 or 2, characterized in that: the positive current collector is any one of an aluminum plating layer, a copper plating layer and a nickel plating layer; and/or
The negative current collector is any one of a copper plating layer, an aluminum plating layer and a nickel plating layer.
4. The flexible thin film battery according to claim 1 or 2, characterized in that: the positive active material contained in the positive active layer is at least one of lithium cobaltate, lithium iron phosphate, lithium nickel manganese oxide, lithium nickel cobalt aluminate and manganese dioxide; and/or
The negative active substance contained in the negative active layer is at least one of artificial graphite, natural graphite, mesocarbon microbeads, lithium titanate, soft carbon, hard carbon, carbon silicon, silicon-based alloy and tin-based alloy.
5. The method of manufacturing a flexible thin film battery according to any one of claims 1 to 4, comprising the steps of:
coating a catalyst layer for forming a current collector on the surface of a polymer substrate;
placing the polymer substrate coated with the catalytic layer in a plating solution for plating a positive current collector to plate the positive current collector on the catalytic layer, or/and placing the polymer substrate coated with the catalytic layer in a plating solution for plating a negative current collector to plate the negative current collector on the catalytic layer;
coating positive active layer slurry on the surface of the positive current collector to form a positive active layer;
coating negative active layer slurry on the surface of the negative current collector to form a negative active layer;
and assembling the positive electrode containing the positive electrode active layer and/or the negative electrode containing the negative electrode active layer according to a thin film battery assembling method.
6. The method of claim 5, wherein: the catalyst layer comprises a catalyst, epoxy glue and a curing accelerator component, and the mass of the catalyst, the epoxy glue and the curing accelerator is 1 (0.5-1) to 0.1-0.2.
7. The method of claim 6, wherein: the catalyst is any one of alloys composed of transition metals in the fourth period and palladium, such as colloidal palladium, palladium-copper alloy particles, palladium-nickel alloy particles and the like; and/or
The curing accelerator is methyl hexahydrophthalic anhydride.
8. A circuit board, characterized by: the flexible thin film battery is the flexible thin film battery in any one of claims 1 to 4 or the flexible thin film battery prepared by the preparation method in any one of claims 5 to 7, and a positive electrode current collector and/or a negative electrode current collector of the flexible thin film battery are directly integrated with the circuit pattern.
9. An electronic product comprising a circuit board, wherein the circuit board is the circuit board of claim 8.
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| CN108550783A (en) * | 2018-05-24 | 2018-09-18 | 银隆新能源股份有限公司 | A kind of preparation method of collector, battery and collector |
| CN108832134A (en) * | 2018-06-28 | 2018-11-16 | 清陶（昆山）新能源材料研究院有限公司 | A kind of flexible current-collecting body and preparation method thereof and the application in lithium ion battery |
| CN111384448B (en) * | 2018-12-29 | 2023-05-26 | 紫石能源有限公司 | Flexible lithium ion battery and preparation method thereof |
| CN111564636A (en) * | 2020-05-19 | 2020-08-21 | 苏州柔能纳米科技有限公司 | Flexible air battery |
| CN111564639B (en) * | 2020-05-28 | 2023-02-28 | 贝特瑞新材料集团股份有限公司 | Lithium ion battery pole piece, preparation method and application thereof |
| CN113745751B (en) * | 2021-08-31 | 2023-07-25 | 远景动力技术(江苏)有限公司 | Lithium ion battery diaphragm and preparation method and application thereof |
| CN115332734A (en) * | 2022-09-13 | 2022-11-11 | 四川启睿克科技有限公司 | Integrated chip and battery integration method |
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