WO2022237230A1 - 硼氧化物包覆的四元正极材料及其制备方法和应用 - Google Patents
硼氧化物包覆的四元正极材料及其制备方法和应用 Download PDFInfo
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- 239000007774 positive electrode material Substances 0.000 title claims abstract description 125
- 229910052810 boron oxide Inorganic materials 0.000 title claims abstract description 65
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 39
- 239000011159 matrix material Substances 0.000 claims abstract description 71
- 239000011247 coating layer Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000005245 sintering Methods 0.000 claims description 58
- 239000010406 cathode material Substances 0.000 claims description 49
- 230000003647 oxidation Effects 0.000 claims description 45
- 238000007254 oxidation reaction Methods 0.000 claims description 45
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 26
- 229910052796 boron Inorganic materials 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 26
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 22
- VGTPKLINSHNZRD-UHFFFAOYSA-N oxoborinic acid Chemical compound OB=O VGTPKLINSHNZRD-UHFFFAOYSA-N 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 16
- XDVOLDOITVSJGL-UHFFFAOYSA-N 3,7-dihydroxy-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound O1B(O)OB2OB(O)OB1O2 XDVOLDOITVSJGL-UHFFFAOYSA-N 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 229910001416 lithium ion Inorganic materials 0.000 claims description 15
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- 239000010410 layer Substances 0.000 claims description 4
- 239000007773 negative electrode material Substances 0.000 claims description 3
- 239000008151 electrolyte solution Substances 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 12
- 238000007086 side reaction Methods 0.000 abstract description 11
- 238000007599 discharging Methods 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 34
- 229910052760 oxygen Inorganic materials 0.000 description 34
- 239000001301 oxygen Substances 0.000 description 34
- 239000000463 material Substances 0.000 description 27
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 25
- 238000001354 calcination Methods 0.000 description 18
- 239000007789 gas Substances 0.000 description 18
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 17
- 239000004327 boric acid Substances 0.000 description 17
- 239000011572 manganese Substances 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- FYWUVDVZWURZJH-UHFFFAOYSA-E [OH-].[Al+3].[Mn+2].[Co+2].[Ni+2].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-] Chemical compound [OH-].[Al+3].[Mn+2].[Co+2].[Ni+2].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-] FYWUVDVZWURZJH-UHFFFAOYSA-E 0.000 description 9
- 230000001590 oxidative effect Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000007580 dry-mixing Methods 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000012153 distilled water Substances 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- CSCBZXDYYKIKTH-UHFFFAOYSA-N [O-2].[Al+3].[Ni+2].[Mn+2].[Co+2] Chemical compound [O-2].[Al+3].[Ni+2].[Mn+2].[Co+2] CSCBZXDYYKIKTH-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- MOWNZPNSYMGTMD-UHFFFAOYSA-N oxidoboron Chemical class O=[B] MOWNZPNSYMGTMD-UHFFFAOYSA-N 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910013716 LiNi Inorganic materials 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000009831 deintercalation Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000009830 intercalation Methods 0.000 description 2
- 230000002687 intercalation Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
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- 230000001351 cycling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011267 electrode slurry Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
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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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- C01G53/42—Nickelates containing alkali metals, e.g. LiNiO2
- C01G53/44—Nickelates containing alkali metals, e.g. LiNiO2 containing manganese
- C01G53/50—Nickelates containing alkali metals, e.g. LiNiO2 containing manganese of the type [MnO2]n-, e.g. Li(NixMn1-x)O2, Li(MyNixMn1-x-y)O2
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Abstract
Description
Claims (15)
- 一种硼氧化物包覆的四元正极材料,其特征在于,所述硼氧化物包覆的四元正极材料包括四元正极材料基体和硼氧化物包覆层,所述硼氧化物包覆层设置在所述四元正极材料基体表面,所述四元正极材料基体为Li aNi xCo yMn zAl (1-x-y-z)O 2,其中a=1~1.06,x=0.8~0.9,y=0.01~0.1,z=0.01~0.1。
- 根据权利要求1所述的硼氧化物包覆的四元正极材料,其特征在于,所述四元正极材料的粒径为8~12μm。
- 根据权利要求1所述的硼氧化物包覆的四元正极材料,其特征在于,所述硼氧化物包覆层的厚度为5~10nm。
- 一种硼氧化物包覆的四元正极材料的制备方法,其特征在于,所述制备方法包括:对包括四元正极材料基体和硼源的混合物进行第一氧化烧结,得到所述硼氧化物包覆的四元正极材料,所述四元正极材料基体为Li aNi xCo yMn zAl (1-x-y-z)O 2,其中a=1~1.06,x=0.8~0.9,y=0.01~0.1,z=0.01~0.1,所述硼源选自偏硼酸和焦硼酸中的一种或两种。
- 根据权利要求4所述的制备方法,其特征在于,所述第一氧化烧结的烧结温度为150~350℃,时间为4~12h。
- 根据权利要求5所述的制备方法,其特征在于,所述第一氧化烧结分为依次进行的第一阶段和第二阶段,所述第一阶段的烧结温度低于所述第二阶段的烧结温度。
- 根据权利要求6所述的制备方法,其特征在于,所述第一阶段的烧结温度为150~200℃、时间为1~5h。
- 根据权利要求6所述的制备方法,其特征在于,所述第二阶段的烧结温度为200~350℃、时间为3~7h。
- 根据权利要求4至8中任一项所述的制备方法,其特征在于,所述硼源与所述四元正极材料基体的质量比为0.001~0.003:1。
- 根据权利要求4所述的制备方法,其特征在于,所述制备方法还包括将所述四元正极材料基体和所述硼源混合,得到所述混合物的混料过程。
- 根据权利要求10所述的制备方法,其特征在于,所述混料过程包括:将所述四元正极材料基体和所述硼源进行混合并进行第一搅拌,得到所述四元正极材料基体和硼源的混合物,所述第一搅拌的速度为2000~3000rpm,时间为10~20min。
- 根据权利要求4所述的制备方法,其特征在于,所述制备方法还包括所述四元正极材料基体的制备过程,所述制备过程包括:对Ni xCo yMn zAl (1-x-y-z)OH与LiOH的混合物进行第二氧化烧结,得到所述四元正极材料基体。
- 根据权利要求12所述的制备方法,其特征在于,所述LiOH和所述Ni xCo yMn zAl (1-x-y-z)OH的摩尔比为1~1.5:1,优选所述第二氧化烧结的烧结温度为650~800℃,时间为4~12h。
- 根据权利要求4所述的制备方法,其特征在于,所述制备方法还包括对四元正极材料基体的洗涤过程,所述洗涤过程包括:对包含洗涤液和所述四元正极材料基体的分散液进行第二搅拌后干燥,优选所述第二搅拌的速度为200~400rpm,时间为5~15min;优选所述干燥的温度为100~200℃,时间为5~15h。
- 一种锂离子电池,所述锂离子电池包括正极材料、负极材料和电解液,其特征在于,所述正极材料包括四元正极材料,所述四元正极材料为权利要求1至3中任一项所述的硼氧化物包覆的四元正极材料或权利要求4至14中任一项所述的制备方法制备得到的硼氧化物包覆的四元正极材料。
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US18/027,629 US20230378453A1 (en) | 2021-05-12 | 2022-01-20 | Boron oxide-coated quaternary cathode electrode material and preparation method and application thereof |
KR1020237043006A KR20240008891A (ko) | 2021-05-12 | 2022-01-20 | 붕소 산화물이 코팅된 4원계 양극재 및 이의 제조 방법과 응용 |
JP2022556524A JP2023528129A (ja) | 2021-05-12 | 2022-01-20 | ホウ素酸化物被覆四元正極材料、その製造方法及び使用 |
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