CN109103438A - 一种锂离子电池用核壳结构负极材料及其制备方法 - Google Patents
一种锂离子电池用核壳结构负极材料及其制备方法 Download PDFInfo
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- CN109103438A CN109103438A CN201811004031.9A CN201811004031A CN109103438A CN 109103438 A CN109103438 A CN 109103438A CN 201811004031 A CN201811004031 A CN 201811004031A CN 109103438 A CN109103438 A CN 109103438A
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- negative electrode
- electrode material
- silicon
- graphite
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- Granted
Links
- 239000007773 negative electrode material Substances 0.000 title claims abstract description 79
- 239000011258 core-shell material Substances 0.000 title claims abstract description 42
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 48
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 47
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 45
- 239000010439 graphite Substances 0.000 claims abstract description 45
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000005336 cracking Methods 0.000 claims abstract description 27
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 21
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims abstract description 19
- 229910052808 lithium carbonate Inorganic materials 0.000 claims abstract description 19
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 17
- 239000011246 composite particle Substances 0.000 claims abstract description 15
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 14
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 12
- 239000010703 silicon Substances 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 239000002270 dispersing agent Substances 0.000 claims abstract description 10
- 230000004927 fusion Effects 0.000 claims abstract description 8
- 238000007493 shaping process Methods 0.000 claims abstract description 8
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 238000000498 ball milling Methods 0.000 claims description 13
- 238000000227 grinding Methods 0.000 claims description 13
- 239000011261 inert gas Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 11
- 238000010792 warming Methods 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 229920002907 Guar gum Polymers 0.000 claims description 5
- 239000000665 guar gum Substances 0.000 claims description 5
- 229960002154 guar gum Drugs 0.000 claims description 5
- 235000010417 guar gum Nutrition 0.000 claims description 5
- 238000003701 mechanical milling Methods 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical class CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000012298 atmosphere Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 150000001408 amides Chemical class 0.000 claims description 2
- 229910052786 argon Inorganic materials 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000001913 cellulose Chemical class 0.000 claims description 2
- 229920002678 cellulose Chemical class 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 150000002240 furans Chemical group 0.000 claims description 2
- 229920005546 furfural resin Polymers 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000001307 helium Substances 0.000 claims description 2
- 229910052734 helium Inorganic materials 0.000 claims description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 2
- PHNWGDTYCJFUGZ-UHFFFAOYSA-N hexyl dihydrogen phosphate Chemical compound CCCCCCOP(O)(O)=O PHNWGDTYCJFUGZ-UHFFFAOYSA-N 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 229910021382 natural graphite Inorganic materials 0.000 claims description 2
- 229910052754 neon Inorganic materials 0.000 claims description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011295 pitch Substances 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 2
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 2
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- 229910021383 artificial graphite Inorganic materials 0.000 claims 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- 239000005011 phenolic resin Substances 0.000 claims 1
- 229920001568 phenolic resin Polymers 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 230000027756 respiratory electron transport chain Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000001354 calcination Methods 0.000 description 4
- 235000013339 cereals Nutrition 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 239000011339 hard pitch Substances 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 229960000935 dehydrated alcohol Drugs 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000032953 Device battery issue Diseases 0.000 description 1
- 241000790917 Dioxys <bee> Species 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
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009831 deintercalation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000010410 dusting Methods 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
- 238000011049 filling Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000011824 nuclear material Substances 0.000 description 1
- -1 phenolic aldehyde Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000011800 void material 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/386—Silicon or alloys based on silicon
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- 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
Description
Claims (9)
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CN201811004031.9A CN109103438B (zh) | 2018-08-30 | 2018-08-30 | 一种锂离子电池用核壳结构负极材料及其制备方法 |
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CN201811004031.9A CN109103438B (zh) | 2018-08-30 | 2018-08-30 | 一种锂离子电池用核壳结构负极材料及其制备方法 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111682183A (zh) * | 2020-06-22 | 2020-09-18 | 贝特瑞新材料集团股份有限公司 | 多元复合负极材料及其制备方法和锂离子电池 |
CN111755677A (zh) * | 2020-07-06 | 2020-10-09 | 马鞍山科达普锐能源科技有限公司 | 一种锂离子电池用核壳结构多孔硅负极材料及其制备方法 |
CN113948684A (zh) * | 2020-07-15 | 2022-01-18 | 三星Sdi株式会社 | 负极活性物质和包括其的可再充电锂电池 |
CN114122358A (zh) * | 2021-11-10 | 2022-03-01 | 云南中晟新材料有限责任公司 | 一种快充石墨复合材料及其制备方法 |
CN114388771A (zh) * | 2022-03-07 | 2022-04-22 | 湖北亿纬动力有限公司 | 硅基复合负极材料、负极极片、其制备方法及锂离子电池 |
CN114497481A (zh) * | 2021-12-31 | 2022-05-13 | 长沙矿冶研究院有限责任公司 | 一种导电聚合物包覆纳米硅粉及其制备方法和应用以及硅碳负极材料 |
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WO2013047870A1 (ja) * | 2011-09-30 | 2013-04-04 | 三菱マテリアル株式会社 | 電極形成材およびその用途 |
CN104319366A (zh) * | 2014-10-09 | 2015-01-28 | 奇瑞汽车股份有限公司 | 一种硅/石墨/钛酸锂复合负极材料及其制备方法 |
CN105826533A (zh) * | 2016-03-28 | 2016-08-03 | 顺德职业技术学院 | 锂离子电池用硅碳复合材料及其制备方法 |
Family Cites Families (1)
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CN108365195A (zh) * | 2018-02-06 | 2018-08-03 | 深圳市普锐能源科技有限公司 | 一种锂离子电池用核壳负极材料及其制备方法 |
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2018
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WO2013047870A1 (ja) * | 2011-09-30 | 2013-04-04 | 三菱マテリアル株式会社 | 電極形成材およびその用途 |
CN104319366A (zh) * | 2014-10-09 | 2015-01-28 | 奇瑞汽车股份有限公司 | 一种硅/石墨/钛酸锂复合负极材料及其制备方法 |
CN105826533A (zh) * | 2016-03-28 | 2016-08-03 | 顺德职业技术学院 | 锂离子电池用硅碳复合材料及其制备方法 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111682183A (zh) * | 2020-06-22 | 2020-09-18 | 贝特瑞新材料集团股份有限公司 | 多元复合负极材料及其制备方法和锂离子电池 |
WO2021258811A1 (zh) * | 2020-06-22 | 2021-12-30 | 贝特瑞新材料集团股份有限公司 | 多元复合负极材料及其制备方法、锂离子电池负极材料及锂离子电池 |
CN111682183B (zh) * | 2020-06-22 | 2022-10-28 | 贝特瑞新材料集团股份有限公司 | 多元复合负极材料及其制备方法和锂离子电池 |
EP4095948A4 (en) * | 2020-06-22 | 2024-03-06 | Btr New Mat Group Co Ltd | MULTI-ELEMENT COMPOSITE NEGATIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, LITHIUM-ION BATTERY NEGATIVE ELECTRODE MATERIAL AND LITHIUM-ION BATTERY |
CN111755677A (zh) * | 2020-07-06 | 2020-10-09 | 马鞍山科达普锐能源科技有限公司 | 一种锂离子电池用核壳结构多孔硅负极材料及其制备方法 |
CN111755677B (zh) * | 2020-07-06 | 2022-05-06 | 马鞍山科达普锐能源科技有限公司 | 一种锂离子电池用核壳结构多孔硅负极材料及其制备方法 |
CN113948684A (zh) * | 2020-07-15 | 2022-01-18 | 三星Sdi株式会社 | 负极活性物质和包括其的可再充电锂电池 |
CN114122358A (zh) * | 2021-11-10 | 2022-03-01 | 云南中晟新材料有限责任公司 | 一种快充石墨复合材料及其制备方法 |
CN114497481A (zh) * | 2021-12-31 | 2022-05-13 | 长沙矿冶研究院有限责任公司 | 一种导电聚合物包覆纳米硅粉及其制备方法和应用以及硅碳负极材料 |
CN114497481B (zh) * | 2021-12-31 | 2024-02-20 | 长沙矿冶研究院有限责任公司 | 一种导电聚合物包覆纳米硅粉及其制备方法和应用以及硅碳负极材料 |
CN114388771A (zh) * | 2022-03-07 | 2022-04-22 | 湖北亿纬动力有限公司 | 硅基复合负极材料、负极极片、其制备方法及锂离子电池 |
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