CN101151748A - 锂二次电池及其正极材料 - Google Patents
锂二次电池及其正极材料 Download PDFInfo
- Publication number
- CN101151748A CN101151748A CNA2006800103482A CN200680010348A CN101151748A CN 101151748 A CN101151748 A CN 101151748A CN A2006800103482 A CNA2006800103482 A CN A2006800103482A CN 200680010348 A CN200680010348 A CN 200680010348A CN 101151748 A CN101151748 A CN 101151748A
- Authority
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- China
- Prior art keywords
- composite oxide
- positive electrode
- lithium
- powder
- oxide powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 69
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 239000010405 anode material Substances 0.000 title 1
- 239000000843 powder Substances 0.000 claims abstract description 152
- 239000007774 positive electrode material Substances 0.000 claims abstract description 42
- 239000000203 mixture Substances 0.000 claims abstract description 36
- SOXUFMZTHZXOGC-UHFFFAOYSA-N [Li].[Mn].[Co].[Ni] Chemical compound [Li].[Mn].[Co].[Ni] SOXUFMZTHZXOGC-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000013078 crystal Substances 0.000 claims abstract description 24
- 239000002131 composite material Substances 0.000 claims description 95
- 239000002245 particle Substances 0.000 claims description 91
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 74
- 239000011572 manganese Substances 0.000 claims description 47
- 239000002002 slurry Substances 0.000 claims description 41
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 38
- 229910052799 carbon Inorganic materials 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 27
- 239000011164 primary particle Substances 0.000 claims description 27
- 238000002156 mixing Methods 0.000 claims description 25
- 238000000634 powder X-ray diffraction Methods 0.000 claims description 24
- 239000011163 secondary particle Substances 0.000 claims description 22
- 238000001694 spray drying Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 18
- 150000002642 lithium compounds Chemical class 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000010298 pulverizing process Methods 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
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- 239000001301 oxygen Substances 0.000 claims description 9
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- 238000001354 calcination Methods 0.000 claims description 7
- 150000001869 cobalt compounds Chemical class 0.000 claims description 7
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- 239000000126 substance Substances 0.000 abstract description 12
- 229910015947 LixNi Inorganic materials 0.000 abstract 1
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 9
- UHZZMRAGKVHANO-UHFFFAOYSA-M chlormequat chloride Chemical class [Cl-].C[N+](C)(C)CCCl UHZZMRAGKVHANO-UHFFFAOYSA-M 0.000 description 9
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- 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 description 5
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 5
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
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- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
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- WJSIUCDMWSDDCE-UHFFFAOYSA-K lithium citrate (anhydrous) Chemical compound [Li+].[Li+].[Li+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O WJSIUCDMWSDDCE-UHFFFAOYSA-K 0.000 description 1
- 229910021445 lithium manganese complex oxide Inorganic materials 0.000 description 1
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- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 1
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- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
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- 150000003568 thioethers Chemical class 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- DQWPFSLDHJDLRL-UHFFFAOYSA-N triethyl phosphate Chemical compound CCOP(=O)(OCC)OCC DQWPFSLDHJDLRL-UHFFFAOYSA-N 0.000 description 1
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
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Images
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- C01G45/1221—Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof
- C01G45/1228—Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof of the type [MnO2]n-, e.g. LiMnO2, Li[MxMn1-x]O2
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- C01G51/50—Cobaltates containing alkali metals, e.g. LiCoO2 containing manganese of the type [MnO2]n-, e.g. Li(CoxMn1-x)O2, Li(MyCoxMn1-x-y)O2
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Abstract
Description
组成 | 含有的C浓度(重量%) | 体积电阻率(Ω·cm) | 2θ=31±1°衍射峰 | 有无层状R(-3)m结构 | 晶格常数() | |||||||
x | y | z | z下限*1 | z上限*2 | a | c | ||||||
实施例 | 1 | 0.055 | 0.159 | 0.032 | 0.014 | 0.105 | 0.020 | 1.0×105 | 无 | 有 | 2.868 | 14.260 |
2 | 0.055 | 0.159 | 0.076 | 0.014 | 0.105 | 0.020 | 2.6×104 | 无 | 有 | 2.866 | 14.254 | |
3 | 0.113 | 0.159 | 0.071 | 0.011 | 0.083 | 0.028 | 3.6×104 | 无 | 有 | 2.858 | 14.239 | |
4 | 0.113 | 0.159 | 0.033 | 0.011 | 0.083 | 0.020 | 2.0×105 | 无 | 有 | 2.861 | 14.250 | |
比较例 | 1 | 0.055 | 0.159 | -0.013 | 0.014 | 0.105 | 0.009 | 1.3×107 | 无 | 有 | 2.872 | 14.269 |
2 | 0.113 | 0.159 | 0.106 | 0.011 | 0.083 | 0.016 | 2.0×104 | 无 | 有 | 2.855 | 14.234 | |
3 | 0.141 | 0.222 | 0.005 | 0.009 | 0.067 | 0.009 | 3.4×106 | 无 | 有 | 2.857 | 14.248 | |
4 | 0.141 | 0.222 | -0.086 | 0.009 | 0.067 | 0.003 | - | 有 | 有 | 2.857 | 14.254 | |
5 | 0.000 | 0.161 | 0.056 | 0.017 | 0.126 | 0.019 | 3.0×104 | 无 | 有 | 2.873 | 14.265 |
平均一次粒径(μm) | 二次粒子中值粒径(μm) | 90%累积粒径(μm) | 松密度(g/cm3) | BET比表面积(m2/g) | ||
实施例 | 1 | 0.6 | 10.3 | 16.6 | 1.9 | 1.16 |
2 | 0.6 | 10.4 | 16.6 | 1.8 | 1.00 | |
3 | 0.7 | 11.4 | 18.7 | 2.0 | 0.94 | |
4 | 0.6 | 11.4 | 19.0 | 2.0 | 1.13 | |
比较例 | 1 | 0.6 | 10.3 | 15.8 | 2.0 | 1.17 |
2 | 0.7 | 11.2 | 18.1 | 2.1 | 0.36 | |
3 | 0.3 | 6.2 | 9.6 | 2.1 | 0.98 | |
4 | 0.5 | 6.4 | 9.8 | 2.0 | 0.70 | |
5 | 0.7 | 10.8 | 17.6 | 2.1 | 1.03 |
低速率放电容量L(mAh/g) | 高速率放电容量H(mAh/g) | L/H×100(%) | 判定结果 | ||
实施例 | 1 | 181.2 | 138.2 | 76 | ○ |
2 | 178.5 | 139.3 | 78 | ○ | |
3 | 166.9 | 125.9 | 76 | ○ | |
4 | 173.1 | 130.3 | 76 | ○ | |
比较例 | 1 | 181.1 | 121.8 | 67 | × |
2 | 159.0 | 114.1 | 72 | × | |
3 | 167.8 | 118.6 | 71 | × | |
4 | 158.2 | 108.7 | 69 | × | |
5 | 186.0 | 138.4 | 74 | × |
初期充放电容量(mAh/g) | 第3循环放电容量(mAh/g) | 第52循环放电容量(mAh/g) | 循环维持率(%) | 判定结果 | 综合判定结果 | ||
实施例 | 1 | 229.5/197.4 | 184.8 | 159.4 | 86 | ○ | ○ |
2 | 240.7/193.1 | 181.4 | 157.9 | 87 | ○ | ○ | |
3 | 264.8/188.7 | 176.7 | 167.7 | 95 | ○ | ○ | |
4 | 250.6/192.4 | 180.5 | 167.4 | 93 | ○ | ○ | |
比较例 | 1 | 224.4/196.0 | 182.7 | 156.3 | 86 | ○ | × |
2 | 285.0/183.7 | 171.7 | 168.9 | 98 | × | × | |
3 | 249.6/186.4 | 171.0 | 141.4 | 83 | × | × | |
4 | 234.5/172.7 | 157.2 | 131.8 | 84 | × | × | |
5 | 226.7/199.1 | 189.8 | 160.3 | 84 | × | × |
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2006
- 2006-02-02 WO PCT/JP2006/301734 patent/WO2006085467A1/ja not_active Application Discontinuation
- 2006-02-02 US US11/815,319 patent/US20090011334A1/en not_active Abandoned
- 2006-02-02 CN CN2006800103482A patent/CN101151748B/zh not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
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WO2006085467A1 (ja) | 2006-08-17 |
US20090011334A1 (en) | 2009-01-08 |
CN101151748B (zh) | 2010-10-06 |
JP2009245955A (ja) | 2009-10-22 |
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