CN108493360A - Aluminum plastic film and preparation method thereof, purposes and the secondary cell comprising it - Google Patents
Aluminum plastic film and preparation method thereof, purposes and the secondary cell comprising it Download PDFInfo
- Publication number
- CN108493360A CN108493360A CN201810232136.3A CN201810232136A CN108493360A CN 108493360 A CN108493360 A CN 108493360A CN 201810232136 A CN201810232136 A CN 201810232136A CN 108493360 A CN108493360 A CN 108493360A
- Authority
- CN
- China
- Prior art keywords
- plastic film
- aluminum plastic
- layer
- dopamine
- preparation
- Prior art date
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- Granted
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 140
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 136
- 239000002985 plastic film Substances 0.000 title claims abstract description 127
- 229920006255 plastic film Polymers 0.000 title claims abstract description 127
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000011159 matrix material Substances 0.000 claims abstract description 41
- 238000000576 coating method Methods 0.000 claims abstract description 39
- 239000011248 coating agent Substances 0.000 claims abstract description 36
- 230000003628 erosive effect Effects 0.000 claims abstract description 33
- 238000005260 corrosion Methods 0.000 claims abstract description 17
- 230000007797 corrosion Effects 0.000 claims abstract description 10
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims description 74
- 239000010410 layer Substances 0.000 claims description 59
- 229960003638 dopamine Drugs 0.000 claims description 37
- 239000000243 solution Substances 0.000 claims description 30
- 239000011241 protective layer Substances 0.000 claims description 28
- 229920001690 polydopamine Polymers 0.000 claims description 18
- 239000004411 aluminium Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical group OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 7
- 239000007983 Tris buffer Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 5
- -1 DOPA Amine Chemical class 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 239000002344 surface layer Substances 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- WTDRDQBEARUVNC-UHFFFAOYSA-N L-Dopa Natural products OC(=O)C(N)CC1=CC=C(O)C(O)=C1 WTDRDQBEARUVNC-UHFFFAOYSA-N 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 150000005676 cyclic carbonates Chemical class 0.000 claims description 2
- 229960004502 levodopa Drugs 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims 1
- 229940106691 bisphenol a Drugs 0.000 claims 1
- 238000012856 packing Methods 0.000 abstract description 6
- 230000004888 barrier function Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 19
- 239000003792 electrolyte Substances 0.000 description 11
- 239000012790 adhesive layer Substances 0.000 description 10
- 229910052744 lithium Inorganic materials 0.000 description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000006258 conductive agent Substances 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 238000006116 polymerization reaction Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000011149 active material Substances 0.000 description 3
- 229910021389 graphene Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229920002449 FKM Polymers 0.000 description 2
- 239000005955 Ferric phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- 239000004917 carbon fiber Substances 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
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001938 differential scanning calorimetry curve Methods 0.000 description 2
- ZZVUWRFHKOJYTH-UHFFFAOYSA-N diphenhydramine Chemical compound C=1C=CC=CC=1C(OCCN(C)C)C1=CC=CC=C1 ZZVUWRFHKOJYTH-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229940032958 ferric phosphate Drugs 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 2
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 2
- 239000003273 ketjen black Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000003002 pH adjusting agent Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- PFYQFCKUASLJLL-UHFFFAOYSA-N [Co].[Ni].[Li] Chemical compound [Co].[Ni].[Li] PFYQFCKUASLJLL-UHFFFAOYSA-N 0.000 description 1
- YWJVFBOUPMWANA-UHFFFAOYSA-H [Li+].[V+5].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O Chemical class [Li+].[V+5].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O YWJVFBOUPMWANA-UHFFFAOYSA-H 0.000 description 1
- ZSYNKHJUSDFTCQ-UHFFFAOYSA-N [Li].[Fe].P(O)(O)(O)=O Chemical compound [Li].[Fe].P(O)(O)(O)=O ZSYNKHJUSDFTCQ-UHFFFAOYSA-N 0.000 description 1
- ZVKRVGZVXQYLPZ-UHFFFAOYSA-N [Li].[V].P(O)(O)(O)=O Chemical compound [Li].[V].P(O)(O)(O)=O ZVKRVGZVXQYLPZ-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- BNBLBRISEAQIHU-UHFFFAOYSA-N disodium dioxido(dioxo)manganese Chemical compound [Na+].[Na+].[O-][Mn]([O-])(=O)=O BNBLBRISEAQIHU-UHFFFAOYSA-N 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- OVAQODDUFGFVPR-UHFFFAOYSA-N lithium cobalt(2+) dioxido(dioxo)manganese Chemical compound [Li+].[Mn](=O)(=O)([O-])[O-].[Co+2] OVAQODDUFGFVPR-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 238000009736 wetting 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
-
- 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
-
- 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
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M12/00—Hybrid cells; Manufacture thereof
- H01M12/08—Hybrid cells; Manufacture thereof composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/1245—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the external coating on the casing
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention provides a kind of aluminum plastic film and preparation method thereof, purposes with comprising its secondary cell, is related to corrosion-proof packing technical field, which includes aluminum plastic film matrix, and aluminum plastic film matrix surface is equipped with one layer and prevents by the erosion resistant coating of electrolytic corrosion.The technical issues of existing aluminum plastic film is easy by electrolytic corrosion to reduce battery security can be solved using the aluminum plastic film, the barrier property of aluminum plastic film can be effectively improved, and then achievees the purpose that improve battery security.
Description
Technical field
The present invention relates to corrosion-proof packing technical fields, more particularly, to a kind of aluminum plastic film and preparation method thereof, purposes and packet
Containing its battery.
Background technology
Rechargeable battery, such as lithium ion battery are a kind of novel Green Chemistry power supplys, not with lithium battery technology
The advantages of disconnected update and development, light, Gao Rong, long-life, gradually obtains the favor of consumer.In recent years, rechargeable battery is not
It is only used widely on a portable electronic device, and is widely used in electric vehicle, electric bicycle and electronic
In terms of the large and medium-sized electrical equipment such as tool.
Aluminum plastic film encapsulation (soft-package battery) is the important packing forms of the rechargeable types accumulator such as lithium battery and sode cell.With
Aluminum plastic film carries out cell package, reduces the security risk of the explosion brought with hard box hat or aluminum hull material package battery, together
When its light feature improve the mass energy density of single battery core.Aluminum plastic film is mainly by the protective layer of outer layer, intermediate aluminium layer
And the adhesive layer composition of internal layer.Protective layer mostly uses dystectic polyester or nylon material, there is very strong mechanical performance, prevents outer
Damage of the power to battery plays a part of to protect battery.However, in practical application, especially in injection process, electrolyte is easily right
Aluminum plastic film protective layer causes to corrode so that aluminium layer is exposed, reduces the barrier property of battery entirety, easily causes short-circuit risks, drop
The safety of low battery.
In view of this, special propose the present invention.
Invention content
The first object of the present invention is to provide a kind of aluminum plastic film, and second is designed to provide a kind of preparation side of aluminum plastic film
Method, to solve the technical issues of existing aluminum plastic film is easy by electrolytic corrosion to reduce battery security.
The third object of the present invention is to provide a kind of purposes of above-mentioned aluminum plastic film, for packing secondary cell.
The fourth object of the present invention is to provide a kind of secondary cell, which has more preferable anti-corrosion effect, safety
Coefficient is higher.
In order to realize that the above-mentioned purpose of the present invention, spy use following technical scheme：
A kind of aluminum plastic film, including aluminum plastic film matrix, the aluminum plastic film matrix surface are equipped with one layer and prevent by electrolytic corrosion
Erosion resistant coating.
Further, the aluminum plastic film matrix includes the adhesive layer, aluminium layer and protective layer set gradually, and the erosion resistant coating is set
In the surface layer of the protective layer.
Further, the erosion resistant coating is poly-dopamine layer, bisphenol A type epoxy resin coating, the painting of cyclic carbonate polyester
Layer or nano-titanium organic coating；Preferably poly-dopamine layer；
Preferably, the thickness of the erosion resistant coating is 0.5-5 microns.
A kind of preparation method of above-mentioned aluminum plastic film prepares one layer of erosion resistant coating in the aluminum plastic film matrix surface and obtains the aluminium
Plastic film.
Further, the surface of the aluminum plastic film matrix is contacted with alkaline dopamine solution, dopamine is in the plastic-aluminum
Film matrix surface obtains the aluminum plastic film after polymerisation occurs.
Further, the dopamine solution is water system dopamine solution；A concentration of the 0.2 of the dopamine solution~
5mg/L, pH value are 7.1~8.5.
Further, the aluminum plastic film matrix is dipped in dopamine solution, agitation 2~for 24 hours, then rushed with deionized water
It is washed till neutrality, the dry 3-12h at 50-120 DEG C, obtains the aluminum plastic film later.
Further, the pH adjusting agent of the dopamine solution is TRIS buffer.
A kind of purposes of above-mentioned aluminum plastic film in secondary cell packaging.
A kind of secondary cell, including battery core and the above-mentioned aluminum plastic film for encapsulating the battery core.
Compared with the prior art, the present invention has the advantages that：
One layer of erosion resistant coating, in injection process, the anti-corrosion is arranged in aluminum plastic film matrix surface in aluminum plastic film provided by the invention
Layer can prevent aluminum plastic film matrix by electrolytic corrosion, increase the barrier property of aluminum plastic film, and then improve the safety of battery.
The preparation method of aluminum plastic film provided by the invention is that one layer of erosion resistant coating directly is prepared in aluminum plastic film matrix surface,
To obtain the aluminum plastic film with anti-corrosion function, this is simple for process, is suitble to industrialized production.
The secondary cell encapsulated with the aluminum plastic film, encapsulation state is good, and the aluminum plastic film is to the electrical property of secondary cell
Any harmful effect is not formed with packing forms.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram for the aluminum plastic film that the embodiment of the present invention 1 provides；
Fig. 2 is the DSC curve figure of the poly-dopamine in the embodiment of the present invention 1；
Fig. 3 is the assembly structure diagram for the secondary cell that the embodiment of the present invention 4 provides.
Icon：10- aluminum plastic films；11- adhesive layers；12- aluminium layers；13- protective layers；14- erosion resistant coatings；20- battery cores；21- anodes
Pole piece；22- diaphragms；23- cathode pole pieces；30- batteries.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
One aspect of the present invention provides a kind of aluminum plastic film, including aluminum plastic film matrix, and aluminum plastic film matrix surface is equipped with one
Layer is prevented by the erosion resistant coating of electrolytic corrosion.
One layer of erosion resistant coating, in injection process, the anti-corrosion is arranged in aluminum plastic film matrix surface in aluminum plastic film provided by the invention
Layer can prevent aluminum plastic film matrix by electrolytic corrosion, increase the barrier property of aluminum plastic film, and then improve the safety of battery.
It should be noted that not making specific restriction, the choosing of erosion resistant coating material to the material of erosion resistant coating in the present invention
Selecting can be adjusted according to the ingredient and type of electrolyte, as long as can meet requirement for anticorrosion.
It is understood that erosion resistant coating is set to the outermost layer of aluminum plastic film matrix, contacted with air, in the fluid injection of battery
The electrolyte of Cheng Zhong, outflow are contacted with erosion resistant coating, and erosion resistant coating protects aluminum plastic film matrix not corroded.
In certain embodiments of the present invention, aluminum plastic film matrix includes the adhesive layer, aluminium layer and protective layer set gradually,
Erosion resistant coating is set to the surface layer of protective layer.
Adhesive layer is in direct contact with battery core, and electrolyte resistance corrodes.In certain embodiments of the present invention, adhesive layer is
PP layers or PE layers.By selecting specific bonding layer material to improve the tensile property of aluminum plastic film.
Aluminium layer plays a supportive role and prevents aqueous vapor from entering.
For protective layer for protecting aluminium layer without damage, erosion resistant coating, which is set to protective layer extexine, can prevent electricity in injection process
Solution liquid corrodes caused by protective layer.
In certain embodiments of the present invention, protective layer is nylon layer or pet layer.By selecting specific protective layer material
Material further increases the safeguard function of aluminum plastic film to improve protective layer wear-resisting property.
In certain embodiments of the present invention, erosion resistant coating is poly-dopamine layer, bisphenol A type epoxy resin coating, ring-type
Carbonic ester polyester coatings or nano-titanium organic coating；Preferably poly-dopamine layer.
Poly-dopamine layer has resistance to strong acid, anticorrosive, and aluminium can be improved in the characteristic of thermal stability height (being resistant to 230 DEG C of high temperature)
Corrosion resistance, mechanical stability and the heat-resisting quantity of plastic film.
In certain embodiments of the present invention, the thickness of erosion resistant coating is 0.5-5 microns.
The thickness control of poly-dopamine layer can not only be played into good anti-corrosion effect at 0.5-5 microns, but also can be improved
Poly-dopamine layer is bonded effect with protective layer, prevents the blocked up bendability for influencing aluminum plastic film of poly-dopamine layer.
The second aspect of the invention provides a kind of preparation method of above-mentioned aluminum plastic film, is prepared in aluminum plastic film matrix surface
One layer of erosion resistant coating obtains aluminum plastic film.
The preparation method of aluminum plastic film provided by the invention is that one layer of erosion resistant coating directly is prepared in aluminum plastic film matrix surface,
To obtain the aluminum plastic film with anti-corrosion function, this is simple for process, is suitble to industrialized production.
In certain embodiments of the present invention, the surface of aluminum plastic film matrix is made to be contacted with alkaline dopamine solution, DOPA
Amine obtains aluminum plastic film after polymerisation occurs for aluminum plastic film matrix surface.
As long as alkaline dopamine solution is coated on aluminum plastic film matrix surface, reacted using the auto polymerization of dopamine, so that it may
To obtain a strata dopamine erosion resistant coating in aluminum plastic film matrix surface.The preparation method is simple for process, and obtained poly-dopamine is anti-
Rotten layer mechanical stability is strong, can effectively prevent electrolyte from corroding aluminum plastic film matrix, meanwhile, which can
Resistance to 230 DEG C of high temperature reduces short-circuit risks caused by battery corrodes due to outer layer, increases the barrier property and peace of battery entirety
Quan Xing.
In certain embodiments of the present invention, dopamine solution is water system dopamine solution；The concentration of dopamine solution
For 0.2~5mg/L, pH value is 7.1~8.5.
As a concentration of 0.2~5mg/L of dopamine solution, when pH value is 7.1~8.5, the polymerization speed of dopamine is very fast,
And obtained poly-dopamine layer is finer and close, and airtight rate is low, and mechanical strength and stability are more preferable.
In certain embodiments of the present invention, make the protective layer of aluminum plastic film matrix and dopamine solution contact 2~for 24 hours,
Then protection layer surface is rinsed to neutrality with deionized water, the dry 3-12h at 50-120 DEG C, obtains aluminum plastic film later.
It is understood that monomer dopamine is under alkaline condition, auto polymerization reaction can occur at room temperature.Here
The reaction temperature of monomer dopamine is not specifically limited, as long as can make monomer dopamine that auto polymerization reaction occur.In addition,
Make the protective layer of aluminum plastic film matrix and mode that dopamine solution contacts there are many kinds of, dopamine solution can be coated or be sprayed
Protective layer is set to be contacted with dopamine solution, dopamine is molten after can also being adsorbed aluminum plastic film matrix with tool in protection layer surface
Poly-dopamine layer is obtained by the reaction through auto polymerization in protection layer surface in liquid.
In certain embodiments of the present invention, the pH adjusting agent of dopamine solution buffers for trishydroxymethylaminomethane
Liquid.
It selects TRIS buffer to adjust the pH value of dopamine solution, dopamine polymerization can be promoted anti-
The progress answered.
The third aspect of the invention provides a kind of purposes of above-mentioned aluminum plastic film in secondary cell packaging.
The fourth aspect of the invention provides a kind of secondary cell, includes the above-mentioned aluminum plastic film of battery core and packaging electric core.
The secondary cell encapsulated with the aluminum plastic film, encapsulation state is good, and the aluminum plastic film is to the electrical property of secondary cell
Any harmful effect is not formed with packing forms.
It is understood that secondary cell provided by the invention includes but not limited to all-solid-state battery, lithium ion battery, lithium
The rechargeable types accumulator such as sulphur battery, lithium-air battery, sodium-ion battery and zinc-air battery uses above-mentioned plastic-aluminum in packaging
Film carries out flexible package.The secondary cell can be widely applied to 3C classes, traffic, space flight, military affairs and fixed energy-storage system.
Above-mentioned secondary battery construction generally comprise anode pole piece, cathode pole piece and between anode pole piece and cathode pole piece it
Between diaphragm and the electrolyte that is immersed.
Wherein, anode pole piece includes collector and positive electrode, and positive electrode includes positive active material, conductive agent and glues
Tie agent.According to the type of secondary cell, positive active material can be from cobalt acid lithium, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, phosphoric acid
Iron lithium, LiMn2O4, lithium-rich manganese-based, lithium ferric manganese phosphate, phosphoric acid vanadium lithium, fluorinated phosphate vanadium lithium, element sulphur, sulfurized polyacrylonitrile, oxygen
Conventional selection and combination are carried out in gas, cobalt acid sodium, phosphoric acid ferrisodium or sodium manganate.It is calculated on the basis of the weight of positive electrode, just
The mass ratio of pole active material is 70-99.9%.
In certain embodiments of the present invention, the conductive agent used in positive electrode includes carbon nanotube, graphene, leads
One kind in electro-graphitic, conductive carbon black, Ketjen black or carbon fiber or at least two combination；On the basis of the weight of positive electrode
It calculates, the mass ratio of conductive agent is 0.1-15%.
In certain embodiments of the present invention, the binder used in positive electrode includes Kynoar, polyethylene
One kind in alcohol, sodium carboxymethylcellulose, butadiene-styrene rubber, Viton or polyurethane or at least two combination；With positive material
It is calculated on the basis of the weight of material, the mass ratio of binder is 0.1-15%.
In certain embodiments of the present invention, cathode pole piece includes collector and negative material, and negative material includes negative
Pole active material, conductive agent and binder.According to the type of battery, negative electrode active material can from artificial graphite, natural graphite,
It is carried out in mesocarbon microspheres, hard carbon, soft carbon, lithium titanate, silicon-based anode, tin base cathode, graphene, lithium metal or kirsite normal
Rule selection and combination.It is calculated on the basis of the weight of negative material, the mass ratio of negative electrode active material is 70-99.9%.
In certain embodiments of the present invention, the conductive agent used in negative material includes carbon nanotube, graphene, leads
One kind in electro-graphitic, conductive carbon black, Ketjen black, carbon fiber or at least two combination；On the basis of the weight of negative material
It calculates, the mass ratio of conductive agent is 0.1-15%.
In certain embodiments of the present invention, the binder used in negative material for Kynoar, polyvinyl alcohol,
One kind in sodium carboxymethylcellulose, butadiene-styrene rubber, Viton, polyurethane or at least two combination；With negative material
It is calculated on the basis of weight, the mass ratio of binder is 0.1-15%.
In an embodiment of the invention, diaphragm includes in single layer PE films, single layer PP films or PP/PE/PP composite membranes
One kind or at least two combination.
Aluminum plastic film provided by the invention is further described in detail below in conjunction with embodiment and comparative example.
Embodiment 1
As shown in Figure 1, the present embodiment is a kind of aluminum plastic film, including aluminum plastic film matrix and erosion resistant coating 14, aluminum plastic film matrix from
Interior arrive outer includes adhesive layer 11, aluminium layer 12 and protective layer 13 successively, and erosion resistant coating 14 is located at the outer surface of protective layer 13, adhesive layer 11
It is contacted for the battery core with battery.
Wherein, protective layer 13 is nylon layer, and adhesive layer 11 is PP layers, and erosion resistant coating is poly-dopamine layer.
The preparation method of aluminum plastic film provided in this embodiment is as follows：TRIS buffer is added to adjust dopamine
The pH value of solution is 7.5, by protective layer table of the dopamine aqueous solution even application of a concentration of 2mg/L in aluminum plastic film matrix
Face rinses protection layer surface to neutrality with deionized water after 10h, dries 5h at 100 DEG C, obtain aluminum plastic film.
Fig. 2 shows the DSC curves of poly-dopamine, and as can be seen from the figure the fusion temperature of caving in of poly-dopamine is 250
DEG C or so, therefore, poly-dopamine is resistant to 230 DEG C of high temperature.
Embodiment 2
The present embodiment is a kind of aluminum plastic film, and structure is identical as the structure of the aluminum plastic film in embodiment 1, and difference exists
In the preparation method of aluminum plastic film is different.
The preparation method of aluminum plastic film provided in this embodiment is as follows：The periphery of aluminum plastic film matrix is turned up, aluminum plastic film base is made
Protective layer in body is contacted with the dopamine aqueous solution of a concentration of 1mg/L, adds TRIS buffer adjustment more
The pH value of bar amine aqueous solution with deionized water rinses protection layer surface to neutrality after being 8.5,4h, dries 6h at 80 DEG C, obtains aluminium
Plastic film.
Embodiment 3
The present embodiment is a kind of aluminum plastic film, and structure is identical as the structure of the aluminum plastic film in embodiment 1, and difference exists
In the preparation method of aluminum plastic film is different.
The preparation method of aluminum plastic film provided in this embodiment is as follows：The periphery of aluminum plastic film matrix is turned up, aluminum plastic film base is made
Protective layer in body is contacted with the dopamine aqueous solution of a concentration of 5mg/L, adds TRIS buffer adjustment more
The pH value of bar amine aqueous solution with deionized water rinses protection layer surface to neutrality after being 8.5,6h, dries 10h at 60 DEG C, obtains aluminium
Plastic film.
Comparative example 1
This comparative example is a kind of aluminum plastic film, includes the adhesive layer of the protective layer of outer layer, intermediate aluminium layer and internal layer.The aluminium
Erosion resistant coating is not set in the layer structure of plastic film.
Embodiment 4
As shown in figure 3, the present embodiment is a kind of secondary cell 30, which is ferric phosphate lithium ion battery, packet
Include battery core 20 and the aluminum plastic film 10 for packaging electric core, wherein battery core 20 include anode pole piece 21, cathode pole piece 23 and between
Diaphragm 22 between anode pole piece and cathode pole piece and electrolyte, aluminum plastic film 10 are the aluminum plastic film that embodiment 2 provides.
Secondary cell in the embodiment is prepared using the method for lamination, specifically includes following steps：
A) cathode is prepared：Negative material active material, conductive agent and binder and solvent are mixed and made into slurry；It will bear again
Pole material paste is coated on negative current collector surface, and cut-parts after drying obtain the cathode of required size；
B) electrolyte is prepared：Electrolyte is dissolved in solvent, is sufficiently stirred to obtain electrolyte；
C) diaphragm is prepared：It is spare that diaphragm is cut into required size；
D) anode is prepared：Active substances in cathode materials, conductive agent and binder and solvent are mixed and made into slurry；It again will just
Pole material paste is coated on plus plate current-collecting body surface, and cut-parts after drying obtain the anode of required size；
Step e) assemblings：It is under inert gas or anhydrous and oxygen-free environment, the cathode prepared, diaphragm, anode is tight successively
Close stacking, electrolyte, which is added dropwise, makes diaphragm complete wetting, and the aluminum plastic film then provided with embodiment 2 is packaged, and completes secondary electricity
The assembling in pond.
Appearance detects
According to the preparation method for the secondary cell that embodiment 4 provides, respectively encapsulated with the embodiment 1-3 aluminum plastic films provided respectively
1000 groups of ferric phosphate lithium ion battery, is denoted as test group 1-3；With comparative example 1 provide aluminum plastic film encapsulation LiFePO4 lithium from
1000 groups of sub- battery, is denoted as control group 1.Appearance detection is carried out to above-mentioned 4000 groups of lithium ion batteries, the lithium corroded occurs in record
As a result the quantity of ion battery is listed in table 1.
1 each group appearance test result of table
| Appearance detection project | There is the quantity/group corroded |
| Test group 1 | 0 |
| Test group 2 | 0 |
| Test group 3 | 0 |
| Control group 1 | 11 |
By 1 testing result of table it is found that the secondary cell being packaged with aluminum plastic film provided by the invention, does not occur rotten
The bad order situation of erosion, and the secondary cell being packaged using traditional aluminum plastic film, since bad order occurs in corrosion
Ratio is 1.1% or so.It can be seen that its anti-corrosion effect is more preferable using aluminum plastic film provided by the invention.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution recorded in previous embodiment, either which part or all technical features are equal
It replaces；And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution
Range.
Claims (10)
1. a kind of aluminum plastic film, which is characterized in that including aluminum plastic film matrix, the aluminum plastic film matrix surface prevents electric equipped with one layer
Solve the erosion resistant coating of corrosion.
2. aluminum plastic film according to claim 1, which is characterized in that the aluminum plastic film matrix includes the bonding set gradually
Layer, aluminium layer and protective layer, the erosion resistant coating are set to the surface layer of the protective layer.
3. according to claims 1 or 2 aluminum plastic film, which is characterized in that the erosion resistant coating be poly-dopamine layer, bisphenol-A type ring
Oxygen resinous coat, cyclic carbonate polyester coatings or nano-titanium organic coating；Preferably poly-dopamine layer；
Preferably, the thickness of the erosion resistant coating is 0.5-5 microns.
4. a kind of preparation method of claim 1-3 any one of them aluminum plastic films, which is characterized in that in the aluminum plastic film matrix
Surface prepares one layer of erosion resistant coating and obtains the aluminum plastic film.
5. the preparation method of aluminum plastic film according to claim 4, which is characterized in that make the aluminum plastic film matrix surface and alkali
Property dopamine solution contact, dopamine the aluminum plastic film matrix surface occur polymerisation after obtain the aluminum plastic film.
6. the preparation method of aluminum plastic film according to claim 5, which is characterized in that the dopamine solution is water system DOPA
Amine aqueous solution；A concentration of 0.2~5mg/L of dopamine solution, pH value are 7.1~8.5.
7. the preparation method of aluminum plastic film according to claim 6, which is characterized in that make the protective layer of the aluminum plastic film matrix
Contact 2 with the dopamine solution~for 24 hours, then the protection layer surface is rinsed to neutrality, later in 50- with deionized water
Dry 3-12h, obtains the aluminum plastic film at 120 DEG C.
8. the preparation method of aluminum plastic film according to claim 5, which is characterized in that the pH value of the dopamine solution is adjusted
Agent is TRIS buffer.
9. a kind of purposes of claim 1-3 any one of them aluminum plastic film in secondary cell packaging.
10. a kind of secondary cell, which is characterized in that including battery core and encapsulate described in the claim any one of 1-3 of the battery core
Aluminum plastic film.
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| CN114347573A (en) * | 2021-12-13 | 2022-04-15 | 深圳市广麟材耀新能源材料科技有限公司 | Aluminum-plastic film structure capable of effectively preventing layering |
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