CN105977495B - A kind of preparation method of affluxion body in lithium ion batteries graphite paper - Google Patents
A kind of preparation method of affluxion body in lithium ion batteries graphite paper Download PDFInfo
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- CN105977495B CN105977495B CN201610308205.5A CN201610308205A CN105977495B CN 105977495 B CN105977495 B CN 105977495B CN 201610308205 A CN201610308205 A CN 201610308205A CN 105977495 B CN105977495 B CN 105977495B
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- lithium ion
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 92
- 239000010439 graphite Substances 0.000 title claims abstract description 92
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 24
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 58
- 238000000576 coating method Methods 0.000 claims abstract description 58
- 239000002131 composite material Substances 0.000 claims abstract description 57
- 229920000098 polyolefin Polymers 0.000 claims abstract description 33
- 239000000725 suspension Substances 0.000 claims abstract description 33
- 239000002253 acid Substances 0.000 claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 27
- 239000004575 stone Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 19
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 15
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 11
- -1 halogen acids Chemical class 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- 235000019441 ethanol Nutrition 0.000 claims description 10
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims description 7
- 229940071870 hydroiodic acid Drugs 0.000 claims description 7
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000007888 film coating Substances 0.000 claims 1
- 238000009501 film coating Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000011888 foil Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910020881 PMo12O40 Inorganic materials 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000005030 aluminium foil Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000037427 ion transport Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 235000011837 pasties Nutrition 0.000 description 2
- IYDGMDWEHDFVQI-UHFFFAOYSA-N phosphoric acid;trioxotungsten Chemical compound O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.OP(O)(O)=O IYDGMDWEHDFVQI-UHFFFAOYSA-N 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229910020628 SiW12O40 Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002322 conducting polymer Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000007639 printing 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
- 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
- H01M4/666—Composites in the form of mixed materials
-
- 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
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- 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
Abstract
The invention discloses a kind of preparation methods of affluxion body in lithium ion batteries graphite paper, including step to be uniformly mixed expanded graphite powder with polyoxometallic acid lithium salts, forms composite stone ink powder；Composite stone ink powder and water are configured to composite graphite suspension；Composite graphite suspension and halogen acids are mixed into coating, then by the coating material in forming coating on polyolefin film；After cated polyolefin film drying will be smeared, coating and polyolefin film are removed, the coating after stripping is the graphite paper, the present invention can meet the needs of electric conductivity, the transmission rate of lithium ion can be improved again, and light-weight, be conducive to the energy density for improving battery.
Description
Technical field
The present invention relates to be related to technical field of lithium ion more particularly to a kind of affluxion body in lithium ion batteries graphite paper
Preparation method.
Background technology
With the wretched insufficiency of Global Oil resource, problem of environmental pollution increasingly aggravates, to the need of extensive clean energy resource
Ask increasing, but solar energy, the clean energy resourcies such as wind energy are unevenly distributed in the time, spatially, it is necessary to utilize extensive energy storage
System ensures the stability of power grid and the continuity of supply of electric power.Lithium battery is deposited as a kind of effective energy conversion and energy
Equipment is stored up, is attracted attention again always since the invention, operating voltage is high, energy density is big, higher than energy, specific power is big, puts
The features such as level is steady, memory-less effect is widely used in various electronic products.Lithium battery is often foil with collector, just extremely aluminium
Foil, cathode are copper foil.It is advantageous in that excellent conductivity, electron-transport speed are fast as collector using metal foil.But gold
Belong to weight weight, is unfavorable for improving the energy density of battery after being assembled into battery.
Another have the Chinese Patent Application No. to be：201510653548.0 date of publication 2015.12.9 discloses a kind of flexible current-collecting
Adhesive linkage is arranged on a surface of flexible substrate layer in body, is adhered on a surface of electrically conductive graphite paper or conductive carbon cloth,
By pressurization, mechanical stripping, preparation includes the flexible current-collecting of flexible substrate layer, adhesive linkage and electrically conductive graphite layer or conductive carbon layer
Body.The flexible current-collecting body of above-mentioned application is equally unfavorable for improving the energy density of battery after dressing up battery.
Invention content
In order to overcome the deficiencies of existing technologies, the present invention provides a kind of preparations of affluxion body in lithium ion batteries graphite paper
Method, graphite paper made from this method can meet the needs of electric conductivity and improve the transmission rate of lithium ion, and weight
Gently, be conducive to improve the energy density of battery.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of preparation method of affluxion body in lithium ion batteries graphite paper, which is characterized in that include the following steps：
(1) expanded graphite powder is uniformly mixed with polyoxometallic acid lithium salts, forms composite stone ink powder；
(2) composite stone ink powder and water are configured to composite graphite suspension；
(3) composite graphite suspension and halogen acids are mixed into coating, then by the coating material on polyolefin film
Form coating；
(4) after cated polyolefin film drying will be smeared, coating and polyolefin film are removed, the coating after stripping is institute
The graphite paper stated.
The polyoxometallic acid lithium salts Li3XY12O40, Li4XY12O40One or more of mixture, wherein X
Refer to any one in two kinds of elements of P, Si；Y refers to any one in two kinds of elements of Mo, W.
The halogen acids is hydroiodic acid or hydrobromic acid.
The mass ratio of the expanded graphite powder and polyoxometallic acid lithium salts is (1-9)：1, the composite graphite suspension with
The volume ratio of halogen acids is (1-9)：1.
The mass percent concentration that the composite stone ink powder is configured to composite graphite suspension with water is 1%-10%.
Further include after rinsing the coating after stripping with ethyl alcohol, it is then wash with distilled water, dry.
The thickness of the graphite paper is 10 microns -20 microns.
The present invention has the following advantages：
1, polyoxometallic acid lithium salts of the present invention includes Li3XY12O40, Li4XY12O40, X refers to any one in two kinds of elements of P, Si
Kind；Y refers to any one in two kinds of elements of Mo, W, due to polyoxometallic acid lithium salts Li3XY12O40, Li4XY12O40With three-dimensional framework
Structure, lithium ion can conduct in the three-dimensional framework of polyoxometallic acid lithium salts, after being ground with graphite powder, polyoxometallic acid lithium
Salt is attached in graphite linings, can also be in multi-metal oxygen while lithium ion transmits in conducting polymer in charge and discharge process
It is conducted in the three-dimensional framework of sour lithium salts, improves lithium ion transport properties, the transmission characteristic of electronics is improved further through graphite, it is full
Foot double requirements of the graphite paper to lithium ion transport and electron-transport.
2, the halogen acids is hydroiodic acid or hydrobromic acid, it is ensured that graphite suspension forms stable pasty slurry.
3, the mass ratio of the expanded graphite powder and polyoxometallic acid lithium salts is (1-9)：1, polyoxometallate can be made full
In embedded graphite powder；The volume ratio of the composite graphite suspension and halogen acids is (1-9)：1, graphite suspension can be made to be formed
Stable pasty slurry.
4, the mass percent concentration that the composite stone ink powder is configured to composite graphite suspension with water is 1%-10%, is used
This concentration range can make graphite powder suspension form the viscosity for being suitble to coating.
5, further include after rinsing the coating after stripping with ethyl alcohol, it is then wash with distilled water, dry.Painting is washed with ethyl alcohol
Organic matter in layer, falls the inorganic impurity in coating wash with distilled water.
6, the thickness of the graphite paper is 10 microns -20 microns, which is the metal foil collection for coating
Graphite paper is prepared as the thickness range by the thickness of fluid, it is ensured that the fitness of coating apparatus and graphite paper ensures coating
Quality.
Specific implementation mode
Embodiment 1
The preparation of Graphite cloth：
(1) by expanded graphite powder and polyoxometallic acid lithium salts Li3PMo12O40With 4：1 quality is more uniform than ground and mixed, shape
It is uniformly mixed at composite stone ink powder, forms composite stone ink powder；
(2) composite stone ink powder and water are configured to composite graphite suspension, the mass percent of composite graphite suspension is dense
Degree is 5%；
(3) it is 3 by volume by composite graphite suspension and hydroiodic acid：1 is mixed into coating, then by the coating material
In forming coating on polyolefin film；The thickness of polyolefin film is 0.5mm.
(4) after cated polyolefin film drying will be smeared, coating and polyolefin film are removed, the coating after stripping is institute
The graphite paper stated.
In step (4), after the coating after stripping is rinsed with ethyl alcohol, then with redistilled water the drying for several times, being put into is cleaned
Graphite paper is dried into case, the thickness of manufactured graphite paper is 12 microns.
The graphite paper of above-mentioned preparation is applied to the collector of lithium ion cell positive and cathode：
Anode：Active material is LiFePO4, content 91%, conductive carbon black content 5%, binder PVDF 4%
It is coated on the graphite paper prepared after positive electrode material is mixed evenly in the above ratio, dry, cut-parts system
At pole piece thickness 139um after anode pole piece, cold pressing.
Cathode：Active material content of graphite 93%, conductive carbon black content 3%, binder PVDF4%
It is coated on the graphite paper prepared after negative material is mixed evenly in the above ratio, dry, cut-parts shape
At pole piece thickness 100um after cathode pole piece, cold pressing.
Diaphragm is PP/PE/PP three-layer membranes, battery design capacity 0.5Ah.
The AC internal Resistance of battery is tested with AC internal Resistance tester.
Embodiment 2
The preparation of Graphite cloth：
(1) by expanded graphite powder and polyoxometallic acid lithium salts（Phosphotungstic acid lithium）Li3PW12O40With 1：1 mass ratio grinding is mixed
It closes uniformly, forms composite stone ink powder and be uniformly mixed, form composite stone ink powder；
(2) composite stone ink powder and water are configured to composite graphite suspension, the mass percent of composite graphite suspension is dense
Degree is 1%；
(3) it is 9 by volume by composite graphite suspension and hydroiodic acid：1 is mixed into coating, then by the coating material
In forming coating on polyolefin film；The thickness of polyolefin film is 0.5mm.
(4) after cated polyolefin film drying will be smeared, coating and polyolefin film are removed, the coating after stripping is institute
The graphite paper stated.
In step (4), after the coating after stripping is rinsed with ethyl alcohol, then with redistilled water the drying for several times, being put into is cleaned
Graphite paper is dried into case, the thickness of manufactured graphite paper is 10 microns.
Graphite paper is applied to the collector of lithium ion cell positive and cathode with embodiment 1.
Embodiment 3
The preparation of Graphite cloth：
(1) by expanded graphite powder and polyoxometallic acid lithium salts（Silicotungstate lithium）Li4SiW12O40With 9：1 mass ratio grinding is mixed
It closes uniformly, forms composite stone ink powder and be uniformly mixed, form composite stone ink powder；
(2) composite stone ink powder and water are configured to composite graphite suspension, the mass percent of composite graphite suspension is dense
Degree is 10%；
(3) it is 1 by volume by composite graphite suspension and hydrobromic acid：1 is mixed into coating, then by the coating material
In forming coating on polyolefin film；The thickness of polyolefin film is 0.5mm.
(4) after cated polyolefin film drying will be smeared, coating and polyolefin film are removed, the coating after stripping is institute
The graphite paper stated.
In step (4), after the coating after stripping is rinsed with ethyl alcohol, then with redistilled water the drying for several times, being put into is cleaned
Graphite paper is dried into case, the thickness of manufactured graphite paper is 15 microns.
Graphite paper is applied to the collector of lithium ion cell positive and cathode with embodiment 1.
Embodiment 4
(1) by expanded graphite powder and polyoxometallic acid lithium salts（Silicotungstate lithium）Li4SiMo12O40With 6：1 mass ratio grinding
It is uniformly mixed, forms composite stone ink powder and be uniformly mixed, form composite stone ink powder；
(2) composite stone ink powder and water are configured to composite graphite suspension, the mass percent of composite graphite suspension is dense
Degree is 6%；
(3) it is 8 by volume by composite graphite suspension and hydrobromic acid：1 is mixed into coating, then by the coating material
In forming coating on polyolefin film；The thickness of polyolefin film is 0.5mm.
(4) after cated polyolefin film drying will be smeared, coating and polyolefin film are removed, the coating after stripping is institute
The graphite paper stated.
In step (4), after the coating after stripping is rinsed with ethyl alcohol, then with redistilled water the drying for several times, being put into is cleaned
Graphite paper is dried into case, the thickness of manufactured graphite paper is 20 microns.
Graphite paper is applied to the collector of lithium ion cell positive and cathode with embodiment 1.
Embodiment 5
(1) by expanded graphite powder and polyoxometallic acid lithium salts Li3PMo12O40With 4：1 quality is more uniform than ground and mixed, shape
It is uniformly mixed at composite stone ink powder, forms composite stone ink powder；
(2) composite stone ink powder and water are configured to composite graphite suspension, the mass percent of composite graphite suspension is dense
Degree is 5%；
(3) it is 3 by volume by composite graphite suspension and halogen acids：1 is mixed into coating, then by the coating material
In forming coating on polyolefin film；The thickness of polyolefin film is 0.5mm.Wherein halogen acids be mixed with hydroiodic acid by hydrobromic acid and
At.
(4) after cated polyolefin film drying will be smeared, coating and polyolefin film are removed, the coating after stripping is institute
The graphite paper stated.
In step (4), after the coating after stripping is rinsed with ethyl alcohol, then with redistilled water the drying for several times, being put into is cleaned
Graphite paper is dried into case, the thickness of manufactured graphite paper is 12 microns.
Graphite paper is applied to the collector of lithium ion cell positive and cathode with embodiment 1.
Embodiment 6
(1) by expanded graphite powder and polyoxometallic acid lithium salts（Silicotungstate lithium Li4SiMo12O40With phosphotungstic acid lithium Li3PW12O40
=1：1 mixture）With 4：1 quality is more uniform than ground and mixed, forms composite stone ink powder and is uniformly mixed, forms composite stone ink powder；
(2) composite stone ink powder and water are configured to composite graphite suspension, the mass percent of composite graphite suspension is dense
Degree is 5%；
(3) it is 10 by volume by composite graphite suspension and hydroiodic acid：1 is mixed into coating, then applies the coating
It smears in forming coating on polyolefin film；The thickness of polyolefin film is 0.5mm.
(4) after cated polyolefin film drying will be smeared, coating and polyolefin film are removed, the coating after stripping is institute
The graphite paper stated.
In step (4), after the coating after stripping is rinsed with ethyl alcohol, then with redistilled water the drying for several times, being put into is cleaned
Graphite paper is dried into case, the thickness of manufactured graphite paper is 12 microns.
Graphite paper is applied to the collector of lithium ion cell positive and cathode with embodiment 1.
Comparative example 1
Graphite paper is prepared using the graphite powder for not adding oxometallate, remaining is the same as the graphite paper prepared by embodiment 1.
Thickness is 10um
Comparative example 2
Plus plate current-collecting body is made using the general aluminium foil of Li electricity enterprises, copper foil makees negative current collector, remaining is the same as embodiment 1.
Gained battery is done into AC internal Resistance test, the results detailed in Table
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative example 1 | Comparative example 2 | |
| Internal resistance (milliohm) | 1.46 | 1.21 | 1.38 | 1.19 | 1.27 | 1.46 | 2.04 | 1.85 |
Use the battery prepared by polyoxometallate novel graphite paper, internal resistance and polarization small as can be seen from the above table
In the collector battery using traditional carbon material printing, the battery prepared by the graphite paper of oxometallate is not added smaller than,
So the polyoxometallate graphite paper used using the present invention has remarkable result to reducing the internal resistance of cell and polarization.
Claims (5)
1. a kind of preparation method of affluxion body in lithium ion batteries graphite paper, which is characterized in that include the following steps：
(1) expanded graphite powder is uniformly mixed with polyoxometallic acid lithium salts, forms composite stone ink powder；
(2) composite stone ink powder and water are configured to composite graphite suspension；
(3) composite graphite suspension and halogen acids are mixed into coating, then by the coating material in being formed on polyolefin film
Coating；
(4) after cated polyolefin film drying will be smeared, coating and polyolefin film are removed, the coating after stripping is described
Graphite paper；
The polyoxometallic acid lithium salts Li3XY12O40, Li4XY12O40One or more of mixture, wherein X refers to P, Si
Any one in two kinds of elements；Y refers to any one in two kinds of elements of Mo, W；The halogen acids is hydroiodic acid or hydrobromic acid.
2. a kind of preparation method of affluxion body in lithium ion batteries graphite paper according to claim 1, it is characterised in that：Institute
The mass ratio for stating expanded graphite powder and polyoxometallic acid lithium salts is (1-9)：1, the body of the composite graphite suspension and halogen acids
Product is than being (1-9)：1.
3. a kind of preparation method of affluxion body in lithium ion batteries graphite paper according to claim 1, it is characterised in that：Institute
It is 1%-10% to state composite stone ink powder and be configured to the mass percent concentration of composite graphite suspension with water.
4. a kind of preparation method of affluxion body in lithium ion batteries graphite paper according to claim 1, it is characterised in that：Also
It is dry after rinsing the coating after stripping with ethyl alcohol, then wash with distilled water.
5. a kind of preparation method of affluxion body in lithium ion batteries graphite paper according to claim 1, it is characterised in that：Institute
The thickness for the graphite paper stated is 10 microns -20 microns.
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| CN108735976A (en) * | 2018-04-11 | 2018-11-02 | 中国东方电气集团有限公司 | A kind of preparation method of electrostatic spinning lithium ion battery negative electrode |
| CN108766789A (en) * | 2018-05-07 | 2018-11-06 | 中国东方电气集团有限公司 | A kind of preparation method of super capacitor electrode pole piece |
| CN110875477B (en) * | 2018-08-31 | 2021-02-09 | 湖南科技大学 | Nitrogen-doped expanded graphite paper current collector and preparation and application thereof |
| CN112194121B (en) * | 2019-07-08 | 2022-05-24 | 宁德时代新能源科技股份有限公司 | Modified graphite paper, preparation method thereof and lithium ion battery containing modified graphite paper |
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| CN105140047A (en) * | 2015-08-14 | 2015-12-09 | 中国科学院福建物质结构研究所 | Flexible current collector and preparation method and application thereof |
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