CN105977495A - Preparation method of graphite paper for current collector of lithium-ion battery - Google Patents
Preparation method of graphite paper for current collector of lithium-ion battery Download PDFInfo
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- CN105977495A CN105977495A CN201610308205.5A CN201610308205A CN105977495A CN 105977495 A CN105977495 A CN 105977495A CN 201610308205 A CN201610308205 A CN 201610308205A CN 105977495 A CN105977495 A CN 105977495A
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- graphite
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- composite
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 239000010439 graphite Substances 0.000 title claims abstract description 95
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 95
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 26
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 57
- 239000011248 coating agent Substances 0.000 claims abstract description 52
- 238000000576 coating method Methods 0.000 claims abstract description 52
- 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 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004575 stone Substances 0.000 claims description 25
- 229910003002 lithium salt Inorganic materials 0.000 claims description 18
- 159000000002 lithium salts Chemical class 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052736 halogen Inorganic materials 0.000 claims description 10
- -1 halogen acids Chemical class 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000007888 film coating Substances 0.000 claims description 8
- 238000009501 film coating Methods 0.000 claims description 8
- 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
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052744 lithium Inorganic materials 0.000 abstract description 8
- 238000001035 drying Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 2
- 239000003973 paint Substances 0.000 abstract 2
- 238000004140 cleaning Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000011888 foil Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910020881 PMo12O40 Inorganic materials 0.000 description 2
- 239000013543 active substance 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
- 238000004146 energy storage 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
- 238000003756 stirring Methods 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
- 230000004888 barrier function Effects 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
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000012528 membrane Substances 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
- 230000008569 process Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a preparation method of graphite paper for a current collector of a lithium-ion battery. The method comprises the steps of mixing expanded graphite powder and lithium polyoxometallate evenly to form composite graphite powder; preparing a composite graphite suspension liquid from the composite graphite powder and water; mixing the composite graphite suspension liquid and a haloid acid to form a paint, and then coating a polyolefin film with the paint to form a coating; and drying the polyolefin film coated with the coating and then stripping the coating from the polyolefin film, thereby forming the graphite paper by the stripped coating. The graphite paper can meet the requirements of the conductivity; the transmission rate of lithium ions can also be improved; the weight is light; and improvement of the energy density of the battery is facilitated.
Description
Technical field
The present invention relates to relate to technical field of lithium ion, particularly relate to the preparation method of a kind of affluxion body in lithium ion batteries graphite paper.
Background technology
Wretched insufficiency along with Global Oil resource, problem of environmental pollution increases the weight of day by day, increasing to the demand of extensive clean energy resource, but solar energy, the clean energy resourcies such as wind energy are in time, spatially skewness, it is necessary to utilize the seriality of large-scale energy storage system stability and supply of electric power to ensure electrical network.Lithium battery is as the conversion of one effective energy and energy storage device, having received publicity the most again since invention, the feature such as its running voltage is high, energy density is big, specific energy is high, specific power is big, electric discharge is steady, memory-less effect is widely used in various electronic product.It is foil, the most extremely aluminium foil that lithium battery commonly uses collector, and negative pole is Copper Foil.Using metal foil to be advantageous in that excellent conductivity as collector, electric transmission speed is fast.But weight metal weight, is unfavorable for improving the energy density of battery after being assembled into battery.
The Chinese Patent Application No. is separately had to be: 201510653548.0, date of publication 2015.12.9 discloses a kind of flexible current-collecting body, a surface of flexible substrate layer arranges adhesive linkage, it is adhered on a surface of electrically conductive graphite paper or conduction carbon cloth, by pressurization, mechanical stripping, preparation includes flexible substrate layer, adhesive linkage and electrically conductive graphite layer or the flexible current-collecting body of conductive carbon layer.The flexible current-collecting body of above-mentioned application is unfavorable for improving the energy density of battery equally after dressing up battery.
Summary of the invention
In order to overcome the defect of prior art, the invention provides the preparation method of a kind of affluxion body in lithium ion batteries graphite paper, the graphite paper that the method prepares can meet the demand of electric conductivity, can improve again the transfer rate of lithium ion, and lightweight, be conducive to improving the energy density of battery.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is:
The preparation method of a kind of affluxion body in lithium ion batteries graphite paper, it is characterised in that comprise the steps:
(1) expanded graphite powder is mixed homogeneously with polyoxometallic acid lithium salts, form composite stone powdered ink；
(2) composite stone powdered ink and water are configured to composite graphite suspension；
(3) composite graphite suspension and halogen acids are mixed into coating, then described coating material is formed on polyolefin film coating；
(4) will smear cated polyolefin film dried, and coating be peeled off with polyolefin film, the coating after stripping is described graphite paper.
Described polyoxometallic acid lithium salts Li3XY12O40, Li4XY12O40In one or more mixture, during wherein X refers to two kinds of elements of P, Si any one；Y refers in two kinds of elements of Mo, W any one.
Described halogen acids is hydroiodic acid or hydrobromic acid.
Described expanded graphite powder is (1-9) with the mass ratio of polyoxometallic acid lithium salts: 1, and described composite graphite suspension is (1-9) with the volume ratio of halogen acids: 1.
It is 1%-10% that described composite stone powdered ink and water are configured to the mass percent concentration of composite graphite suspension.
After also including the coating alcohol flushing after peeling off, then clean with distilled water, be dried.
The thickness of described graphite paper is 10 microns 20 microns.
The invention have the advantages that
1, polyoxometallic acid lithium salts of the present invention includes Li3XY12O40, Li4XY12O40, X refers in two kinds of elements of P, Si any one；Y refers in two kinds of elements of Mo, W any one, due to polyoxometallic acid lithium salts Li3XY12O40, Li4XY12O40There is three dimensional skeletal structure, lithium ion can conduct in the three-dimensional framework of polyoxometallic acid lithium salts, after grinding with graphite powder, polyoxometallic acid lithium salts is attached in graphite linings, in charge and discharge process, lithium ion can also conduct while transmitting in conducting polymer in the three-dimensional framework of polyoxometallic acid lithium salts, improves lithium ion transport properties, improve the transmission characteristic of electronics further through graphite, meet graphite paper to lithium ion transport and the double requirements of electric transmission.
2, described halogen acids is hydroiodic acid or hydrobromic acid, it is ensured that graphite suspension forms stable pasty slurry.
3, described expanded graphite powder is (1-9) with the mass ratio of polyoxometallic acid lithium salts: 1, and polyoxometallic acid salt loading can be made to embed in graphite powder；Described composite graphite suspension is (1-9) with the volume ratio of halogen acids: 1, and graphite suspension can be made to form stable pasty slurry.
4, described composite stone powdered ink and water are configured to the mass percent concentration of composite graphite suspension is 1%-10%, uses this concentration range that graphite powder suspension can be made to form the viscosity being suitable for coating.
5, after also including the coating alcohol flushing after peeling off, then clean with distilled water, be dried.Fall the Organic substance in coating with ethanol purge, wash the inorganic impurity in coating with distilled water.
6, the thickness of described graphite paper is 10 microns 20 microns, and this thickness range is the thickness of the metal foil collector for coating, and graphite paper is prepared as this thickness range, it is ensured that coating apparatus and the fitness of graphite paper, it is ensured that coating quality.
Detailed description of the invention
Embodiment 1
The preparation of Graphite cloth:
(1) by expanded graphite powder and polyoxometallic acid lithium salts Li3PMo12O40Quality with 4:1 is more uniform than ground and mixed, forms composite stone powdered ink mix homogeneously, forms composite stone powdered ink；
(2) composite stone powdered ink and water being configured to composite graphite suspension, the mass percent concentration of composite graphite suspension is 5%；
(3) composite graphite suspension and hydroiodic acid are mixed into coating for 3:1 by volume, then described coating material is formed on polyolefin film coating；The thickness of polyolefin film is 0.5mm.
(4) will smear cated polyolefin film dried, and coating be peeled off with polyolefin film, the coating after stripping is described graphite paper.
In step (4), after the coating alcohol flushing after stripping, then cleaning for several times with redistilled water, be dried into graphite paper in the drying baker put into, the thickness of the graphite paper made is 12 microns.
The graphite paper of above-mentioned preparation is applied to the collector of lithium ion cell positive and negative pole:
Positive pole: active substance is LiFePO4, content 91%, conductive carbon black content 5%, binding agent PVDF 4%
Positive electrode material is coated on the graphite paper prepared in after above ratio mixing and stirring, is dried, cut-parts make anode pole piece, cold pressing after pole piece thickness 139um.
Negative pole: active substance content of graphite 93%, conductive carbon black content 3%, binding agent PVDF4%
Negative material is coated on the graphite paper prepared in after above ratio mixing and stirring, be dried, cut-parts formed cathode pole piece, cold pressing after pole piece thickness 100um.
Barrier film is PP/PE/PP three-layer membrane, battery design capacity 0.5Ah.
AC internal Resistance with AC internal Resistance tester test battery.
Embodiment 2
The preparation of Graphite cloth:
(1) by expanded graphite powder and polyoxometallic acid lithium salts (phosphotungstic acid lithium) Li3PW12O40Quality with 1:1 is more uniform than ground and mixed, forms composite stone powdered ink mix homogeneously, forms composite stone powdered ink；
(2) composite stone powdered ink and water being configured to composite graphite suspension, the mass percent concentration of composite graphite suspension is 1%；
(3) composite graphite suspension and hydroiodic acid are mixed into coating for 9:1 by volume, then described coating material is formed on polyolefin film coating；The thickness of polyolefin film is 0.5mm.
(4) will smear cated polyolefin film dried, and coating be peeled off with polyolefin film, the coating after stripping is described graphite paper.
In step (4), after the coating alcohol flushing after stripping, then cleaning for several times with redistilled water, be dried into graphite paper in the drying baker put into, the thickness of the graphite paper made is 10 microns.
Graphite paper is applied to the lithium ion cell positive collector with negative pole with embodiment 1.
Embodiment 3
The preparation of Graphite cloth:
(1) by expanded graphite powder and polyoxometallic acid lithium salts (silicotungstate lithium) Li4SiW12O40Quality with 9:1 is more uniform than ground and mixed, forms composite stone powdered ink mix homogeneously, forms composite stone powdered ink；
(2) composite stone powdered ink and water being configured to composite graphite suspension, the mass percent concentration of composite graphite suspension is 10%；
(3) composite graphite suspension and hydrobromic acid are mixed into coating for 1:1 by volume, then described coating material is formed on polyolefin film coating；The thickness of polyolefin film is 0.5mm.
(4) will smear cated polyolefin film dried, and coating be peeled off with polyolefin film, the coating after stripping is described graphite paper.
In step (4), after the coating alcohol flushing after stripping, then cleaning for several times with redistilled water, be dried into graphite paper in the drying baker put into, the thickness of the graphite paper made is 15 microns.
Graphite paper is applied to the lithium ion cell positive collector with negative pole with embodiment 1.
Embodiment 4
(1) by expanded graphite powder and polyoxometallic acid lithium salts (silicotungstate lithium) Li4SiMo12O40Quality with 6:1 is more uniform than ground and mixed, forms composite stone powdered ink mix homogeneously, forms composite stone powdered ink；
(2) composite stone powdered ink and water being configured to composite graphite suspension, the mass percent concentration of composite graphite suspension is 6%；
(3) composite graphite suspension and hydrobromic acid are mixed into coating for 8:1 by volume, then described coating material is formed on polyolefin film coating；The thickness of polyolefin film is 0.5mm.
(4) will smear cated polyolefin film dried, and coating be peeled off with polyolefin film, the coating after stripping is described graphite paper.
In step (4), after the coating alcohol flushing after stripping, then cleaning for several times with redistilled water, be dried into graphite paper in the drying baker put into, the thickness of the graphite paper made is 20 microns.
Graphite paper is applied to the lithium ion cell positive collector with negative pole with embodiment 1.
Embodiment 5
(1) by expanded graphite powder and polyoxometallic acid lithium salts Li3PMo12O40Quality with 4:1 is more uniform than ground and mixed, forms composite stone powdered ink mix homogeneously, forms composite stone powdered ink；
(2) composite stone powdered ink and water being configured to composite graphite suspension, the mass percent concentration of composite graphite suspension is 5%；
(3) composite graphite suspension and halogen acids are mixed into coating for 3:1 by volume, then described coating material is formed on polyolefin film coating；The thickness of polyolefin film is 0.5mm.Wherein halogen acids is to be mixed with hydroiodic acid by hydrobromic acid.
(4) will smear cated polyolefin film dried, and coating be peeled off with polyolefin film, the coating after stripping is described graphite paper.
In step (4), after the coating alcohol flushing after stripping, then cleaning for several times with redistilled water, be dried into graphite paper in the drying baker put into, the thickness of the graphite paper made is 12 microns.
Graphite paper is applied to the lithium ion cell positive collector with negative pole with embodiment 1.
Embodiment 6
(1) by expanded graphite powder and polyoxometallic acid lithium salts (silicotungstate lithium Li4SiMo12O40With phosphotungstic acid lithium Li3PW12O40The mixture of=1:1) more uniform than ground and mixed with the quality of 4:1, form composite stone powdered ink mix homogeneously, form composite stone powdered ink；
(2) composite stone powdered ink and water being configured to composite graphite suspension, the mass percent concentration of composite graphite suspension is 5%；
(3) composite graphite suspension and hydroiodic acid are mixed into coating for 10:1 by volume, then described coating material is formed on polyolefin film coating；The thickness of polyolefin film is 0.5mm.
(4) will smear cated polyolefin film dried, and coating be peeled off with polyolefin film, the coating after stripping is described graphite paper.
In step (4), after the coating alcohol flushing after stripping, then cleaning for several times with redistilled water, be dried into graphite paper in the drying baker put into, the thickness of the graphite paper made is 12 microns.
Graphite paper is applied to the lithium ion cell positive collector with negative pole with embodiment 1.
Comparative example 1
Using the graphite powder not adding polyoxometallate to prepare graphite paper, remaining is 10um with the graphite paper thickness prepared by embodiment 1.
Comparative example 2
Plus plate current-collecting body made by the aluminium foil using Li electricity enterprise general, and negative current collector made by Copper Foil, and remaining is with embodiment 1.
Gained battery is done 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 as can be seen from the above table, its internal resistance and polarization are less than the collector battery using the printing of conventional carbon material, smaller than do not add the battery prepared by graphite paper of polyoxometallate, so the polyoxometallate graphite paper using the present invention to use has remarkable result to the reduction internal resistance of cell and polarization.
Claims (7)
1. the preparation method of an affluxion body in lithium ion batteries graphite paper, it is characterised in that comprise the steps:
(1) expanded graphite powder is mixed homogeneously with polyoxometallic acid lithium salts, form composite stone powdered ink；
(2) composite stone powdered ink and water are configured to composite graphite suspension；
(3) composite graphite suspension and halogen acids are mixed into coating, then described coating material is formed on polyolefin film coating；
(4) will smear cated polyolefin film dried, and coating be peeled off with polyolefin film, the coating after stripping is described graphite paper.
The preparation method of a kind of affluxion body in lithium ion batteries graphite paper the most according to claim 1, it is characterised in that:
Described polyoxometallic acid lithium salts Li3XY12O40, Li4XY12O40In one or more mixture, during wherein X refers to two kinds of elements of P, Si any one；Y refers in two kinds of elements of Mo, W any one.
The preparation method of a kind of affluxion body in lithium ion batteries graphite paper the most according to claim 1, it is characterised in that: described halogen acids is hydroiodic acid or hydrobromic acid.
The preparation method of a kind of affluxion body in lithium ion batteries graphite paper the most according to claim 1, it is characterized in that: described expanded graphite powder is (1-9) with the mass ratio of polyoxometallic acid lithium salts: 1, and described composite graphite suspension is (1-9) with the volume ratio of halogen acids: 1.
The preparation method of a kind of affluxion body in lithium ion batteries graphite paper the most according to claim 1, it is characterised in that: it is 1%-10% that described composite stone powdered ink and water are configured to the mass percent concentration of composite graphite suspension.
The preparation method of a kind of affluxion body in lithium ion batteries graphite paper the most according to claim 1, it is characterised in that: after also including the coating alcohol flushing after peeling off, then clean with distilled water, be dried.
The preparation method of a kind of affluxion body in lithium ion batteries graphite paper the most according to claim 1, it is characterised in that: the thickness of described graphite paper 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 |
| CN110875477A (en) * | 2018-08-31 | 2020-03-10 | 湖南科技大学 | Nitrogen-doped expanded graphite paper current collector and preparation and application thereof |
| WO2021004274A1 (en) * | 2019-07-08 | 2021-01-14 | 宁德时代新能源科技股份有限公司 | Modified graphite paper, preparation method therefor, and lithium ion battery containing same |
Family Cites Families (5)
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| CN103383898A (en) * | 2012-05-04 | 2013-11-06 | 海洋王照明科技股份有限公司 | Preparing method of graphene paper current collector |
| CN104051693B (en) * | 2014-06-16 | 2016-06-01 | 中国东方电气集团有限公司 | A kind of lithium ion battery polyoxometallic acid lithium salt ceramic diaphragm |
| CN104051717B (en) * | 2014-06-16 | 2016-08-24 | 中国东方电气集团有限公司 | A kind of polyoxometallic acid lithium salts polymer Li-ion battery electrode material and preparation method thereof |
| CN104882631A (en) * | 2015-05-05 | 2015-09-02 | 哈尔滨天宝石墨科技发展有限公司 | Method for improving uniform heat dispersion performance of lithium ion battery electrode piece |
| CN105140047B (en) * | 2015-08-14 | 2018-02-16 | 中国科学院福建物质结构研究所 | A kind of flexible current-collecting body and its preparation method and application |
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2016
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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 |
| CN110875477A (en) * | 2018-08-31 | 2020-03-10 | 湖南科技大学 | Nitrogen-doped expanded graphite paper current collector and preparation and application thereof |
| 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 |
| WO2021004274A1 (en) * | 2019-07-08 | 2021-01-14 | 宁德时代新能源科技股份有限公司 | Modified graphite paper, preparation method therefor, and lithium ion battery containing same |
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| CN105977495B (en) | 2018-09-04 |
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