CN112768643A - 一种锂离子电池正极复合材料及其制备方法 - Google Patents
一种锂离子电池正极复合材料及其制备方法 Download PDFInfo
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- CN112768643A CN112768643A CN201911075039.9A CN201911075039A CN112768643A CN 112768643 A CN112768643 A CN 112768643A CN 201911075039 A CN201911075039 A CN 201911075039A CN 112768643 A CN112768643 A CN 112768643A
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- Prior art keywords
- lithium
- positive electrode
- composite material
- cobalt phosphate
- matrix
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- 239000002131 composite material Substances 0.000 title claims abstract description 76
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 17
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title abstract description 16
- 229910000152 cobalt phosphate Inorganic materials 0.000 claims abstract description 84
- ZBDSFTZNNQNSQM-UHFFFAOYSA-H cobalt(2+);diphosphate Chemical compound [Co+2].[Co+2].[Co+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O ZBDSFTZNNQNSQM-UHFFFAOYSA-H 0.000 claims abstract description 76
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 74
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 74
- 239000011159 matrix material Substances 0.000 claims abstract description 66
- 238000010438 heat treatment Methods 0.000 claims abstract description 54
- 238000002156 mixing Methods 0.000 claims abstract description 28
- 239000007774 positive electrode material Substances 0.000 claims abstract description 26
- 239000002243 precursor Substances 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 60
- 239000011247 coating layer Substances 0.000 claims description 27
- 230000002950 deficient Effects 0.000 claims description 26
- SBWRUMICILYTAT-UHFFFAOYSA-K lithium;cobalt(2+);phosphate Chemical compound [Li+].[Co+2].[O-]P([O-])([O-])=O SBWRUMICILYTAT-UHFFFAOYSA-K 0.000 claims description 24
- 239000000126 substance Substances 0.000 claims description 23
- 239000000758 substrate Substances 0.000 claims description 21
- 229910019142 PO4 Inorganic materials 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- 229910009951 LiaCo1−bMbO2 Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000010405 anode material Substances 0.000 abstract description 14
- 239000003792 electrolyte Substances 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 21
- 239000000243 solution Substances 0.000 description 15
- 239000010406 cathode material Substances 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 13
- 238000000576 coating method Methods 0.000 description 13
- 239000010936 titanium Substances 0.000 description 11
- 239000010452 phosphate Substances 0.000 description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- 238000000498 ball milling Methods 0.000 description 6
- 229910000428 cobalt oxide Inorganic materials 0.000 description 6
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 6
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 6
- 229910052808 lithium carbonate Inorganic materials 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- 238000003917 TEM image Methods 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 150000001868 cobalt Chemical class 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002642 lithium compounds Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- OOSZCNKVJAVHJI-UHFFFAOYSA-N 1-[(4-fluorophenyl)methyl]piperazine Chemical compound C1=CC(F)=CC=C1CN1CCNCC1 OOSZCNKVJAVHJI-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- CNGGOAOYPQGTLH-UHFFFAOYSA-N [O-2].[O-2].[Mg+2].[Al+3] Chemical compound [O-2].[O-2].[Mg+2].[Al+3] CNGGOAOYPQGTLH-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- GFHNAMRJFCEERV-UHFFFAOYSA-L cobalt chloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Co+2] GFHNAMRJFCEERV-UHFFFAOYSA-L 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910000032 lithium hydrogen carbonate Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 229940074545 sodium dihydrogen phosphate dihydrate Drugs 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- 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
- H01M4/366—Composites as layered products
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G51/00—Compounds of cobalt
- C01G51/40—Cobaltates
- C01G51/42—Cobaltates containing alkali metals, e.g. LiCoO2
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- C—CHEMISTRY; METALLURGY
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
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- H01M10/052—Li-accumulators
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- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
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- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
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Abstract
Description
LCO-D0 | LCO-D1 | |
85℃6h后电池厚度增加量(%) | 17.7 | 9.8 |
60℃7d后电池厚度增加量(%) | 45.2 | 26 |
LCO-B0 | LCO-B1 | LCO-B2 | |
首次容量(mAhg<sup>-1</sup>) | 211.2 | 211.0 | 209.9 |
Claims (10)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN201911075039.9A CN112768643A (zh) | 2019-11-06 | 2019-11-06 | 一种锂离子电池正极复合材料及其制备方法 |
PCT/CN2020/122366 WO2021088643A1 (zh) | 2019-11-06 | 2020-10-21 | 一种锂离子电池正极复合材料及其制备方法 |
KR1020227012408A KR20220088854A (ko) | 2019-11-06 | 2020-10-21 | 리튬이온 전지 양극 복합 재료 및 그의 제조방법 |
US17/723,727 US20230068479A1 (en) | 2019-11-06 | 2020-10-21 | Cathode composite material for lithium-ion battery (lib), and preparation method thereof |
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CN201911075039.9A CN112768643A (zh) | 2019-11-06 | 2019-11-06 | 一种锂离子电池正极复合材料及其制备方法 |
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CN112768643A true CN112768643A (zh) | 2021-05-07 |
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US (1) | US20230068479A1 (zh) |
KR (1) | KR20220088854A (zh) |
CN (1) | CN112768643A (zh) |
WO (1) | WO2021088643A1 (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113871613A (zh) * | 2021-09-28 | 2021-12-31 | 蜂巢能源科技有限公司 | 高镍三元镍钴锰酸锂正极材料及其制备方法 |
CN114725367A (zh) * | 2022-04-22 | 2022-07-08 | 格林美(无锡)能源材料有限公司 | 一种钴酸锂正极材料及其制备方法和应用 |
WO2023225838A1 (zh) * | 2022-05-24 | 2023-11-30 | 宁德时代新能源科技股份有限公司 | 正极活性材料、正极极片、二次电池、电池模块、电池包和用电装置 |
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CN113871613A (zh) * | 2021-09-28 | 2021-12-31 | 蜂巢能源科技有限公司 | 高镍三元镍钴锰酸锂正极材料及其制备方法 |
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CN113871613B (zh) * | 2021-09-28 | 2024-05-07 | 蜂巢能源科技有限公司 | 高镍三元镍钴锰酸锂正极材料及其制备方法 |
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WO2023225838A1 (zh) * | 2022-05-24 | 2023-11-30 | 宁德时代新能源科技股份有限公司 | 正极活性材料、正极极片、二次电池、电池模块、电池包和用电装置 |
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