CN112310402A - 一种硅复合材料的制备及含其的负极片 - Google Patents
一种硅复合材料的制备及含其的负极片 Download PDFInfo
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- CN112310402A CN112310402A CN202011547186.4A CN202011547186A CN112310402A CN 112310402 A CN112310402 A CN 112310402A CN 202011547186 A CN202011547186 A CN 202011547186A CN 112310402 A CN112310402 A CN 112310402A
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- Prior art keywords
- silicon
- composite material
- lithium
- carbon
- graphite
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 185
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 149
- 239000002131 composite material Substances 0.000 title claims abstract description 122
- 239000010703 silicon Substances 0.000 title claims abstract description 121
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 188
- 239000002245 particle Substances 0.000 claims abstract description 105
- 239000010439 graphite Substances 0.000 claims abstract description 71
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 71
- 239000011163 secondary particle Substances 0.000 claims abstract description 46
- 239000002041 carbon nanotube Substances 0.000 claims description 100
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 100
- 239000005543 nano-size silicon particle Substances 0.000 claims description 89
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 65
- 229910052744 lithium Inorganic materials 0.000 claims description 53
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 46
- 238000002156 mixing Methods 0.000 claims description 46
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 38
- 239000002620 silicon nanotube Substances 0.000 claims description 36
- 229910021430 silicon nanotube Inorganic materials 0.000 claims description 36
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 35
- 229910052760 oxygen Inorganic materials 0.000 claims description 35
- 239000001301 oxygen Substances 0.000 claims description 35
- 239000000203 mixture Substances 0.000 claims description 32
- 239000011812 mixed powder Substances 0.000 claims description 28
- 229920002125 Sokalan® Polymers 0.000 claims description 26
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 claims description 25
- 229910052912 lithium silicate Inorganic materials 0.000 claims description 25
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 22
- 238000000498 ball milling Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 20
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 18
- 229910052799 carbon Inorganic materials 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 239000002002 slurry Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 230000003213 activating effect Effects 0.000 claims description 15
- 238000010000 carbonizing Methods 0.000 claims description 15
- 239000000839 emulsion Substances 0.000 claims description 15
- 239000004584 polyacrylic acid Substances 0.000 claims description 15
- 239000000377 silicon dioxide Substances 0.000 claims description 14
- 238000001694 spray drying Methods 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 239000011889 copper foil Substances 0.000 claims description 13
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims description 12
- 229910001947 lithium oxide Inorganic materials 0.000 claims description 12
- 239000003960 organic solvent Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 235000010344 sodium nitrate Nutrition 0.000 claims description 11
- 239000004317 sodium nitrate Substances 0.000 claims description 11
- -1 lithium halide Chemical class 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 6
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 claims description 6
- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 239000007791 liquid phase Substances 0.000 claims description 4
- 150000003376 silicon Chemical class 0.000 claims description 4
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 2
- 230000004913 activation Effects 0.000 claims description 2
- 239000012190 activator Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 2
- 239000012286 potassium permanganate Substances 0.000 claims description 2
- 239000007790 solid phase Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 description 18
- 239000011856 silicon-based particle Substances 0.000 description 12
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 12
- 239000002202 Polyethylene glycol Substances 0.000 description 11
- 229920001223 polyethylene glycol Polymers 0.000 description 11
- 125000003342 alkenyl group Chemical group 0.000 description 10
- 125000001118 alkylidene group Chemical group 0.000 description 10
- UBHZUDXTHNMNLD-UHFFFAOYSA-N dimethylsilane Chemical compound C[SiH2]C UBHZUDXTHNMNLD-UHFFFAOYSA-N 0.000 description 10
- 125000001841 imino group Chemical group [H]N=* 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 239000013589 supplement Substances 0.000 description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 7
- 238000000227 grinding Methods 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- 125000004467 aryl imino group Chemical group 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011246 composite particle Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009830 intercalation Methods 0.000 description 2
- 230000002687 intercalation Effects 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 238000006138 lithiation reaction Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002048 multi walled nanotube Substances 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000002109 single walled nanotube Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910001556 Li2Si2O5 Inorganic materials 0.000 description 1
- 229910007562 Li2SiO3 Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 125000004986 diarylamino group Chemical group 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical group [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 229910052909 inorganic silicate Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010902 jet-milling Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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Abstract
Description
Claims (10)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011547186.4A CN112310402B (zh) | 2020-12-24 | 2020-12-24 | 一种硅复合材料的制备及含其的负极片 |
JP2023503224A JP2023536694A (ja) | 2020-12-24 | 2021-12-02 | シリコン複合材料の製造方法及びそれを含む負極シート |
PCT/CN2021/134934 WO2022135096A1 (zh) | 2020-12-24 | 2021-12-02 | 一种硅复合材料的制备及含其的负极片 |
KR1020237025212A KR20230145327A (ko) | 2020-12-24 | 2021-12-02 | 실리콘 복합 재료의 제조 및 이를 포함하는 음극 시트 |
EP21909093.3A EP4160747A1 (en) | 2020-12-24 | 2021-12-02 | Preparation of silicon composite material, and negative electrode plate containing same |
AU2021408748A AU2021408748A1 (en) | 2020-12-24 | 2021-12-02 | Preparation of silicon composite material, and negative electrode plate containing same |
US18/108,410 US20230187611A1 (en) | 2020-12-24 | 2023-02-10 | Preparation of Silicon Composite Material, and Negative Electrode Plate Containing Same |
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CN202011547186.4A CN112310402B (zh) | 2020-12-24 | 2020-12-24 | 一种硅复合材料的制备及含其的负极片 |
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Publication Number | Publication Date |
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CN112310402A true CN112310402A (zh) | 2021-02-02 |
CN112310402B CN112310402B (zh) | 2021-03-26 |
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Country Status (7)
Country | Link |
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US (1) | US20230187611A1 (zh) |
EP (1) | EP4160747A1 (zh) |
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WO2022135096A1 (zh) * | 2020-12-24 | 2022-06-30 | 上海瑞浦青创新能源有限公司 | 一种硅复合材料的制备及含其的负极片 |
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US20230187611A1 (en) | 2023-06-15 |
JP2023536694A (ja) | 2023-08-29 |
EP4160747A1 (en) | 2023-04-05 |
AU2021408748A1 (en) | 2023-08-10 |
KR20230145327A (ko) | 2023-10-17 |
WO2022135096A1 (zh) | 2022-06-30 |
CN112310402B (zh) | 2021-03-26 |
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