| 发明名称 |
COBALT-STABILIZED LITHIUM METAL OXIDE ELECTRODES FOR LITHIUM BATTERIES |
| 摘要 |
A three-component, layered-layered-spinel, composite lithium metal oxide electrode material, in an initial state has the formula:;y[xLi2MO3.(1-x)LiM′O2].(1-y)Li1+dMn2-z-dM″zO4; wherein 0≦x≦1; 0.75≦y<1; 0<z≦2; 0≦d≦0.2; and z-d≦2. M comprises one or more metal ions that together have an average oxidation state of +4; M′ comprises one or more metal ions that together have an average oxidation state of +3; and M″ comprises one or more metal ions that together with the Mn and any excess proportion of lithium, “d”, have a combined average oxidation state between +3.5 and +4. The Li1+dMn2-z-dM″zO4 component comprises a spinel crystal structure, each of the Li2MO3 and the LiM′O2 components comprise layered crystal structures, and at least one of M, M′, and M″ comprises Co. Cells and batteries comprising the electrode material also are described. |
| 申请公布号 |
US2015180032(A1) |
申请公布日期 |
2015.06.25 |
| 申请号 |
US201414554762 |
申请日期 |
2014.11.26 |
| 申请人 |
UCHICAGO ARGONNE, LLC |
发明人 |
THACKERAY Michael M.;CROY Jason R.;LONG Brandon R. |
| 分类号 |
H01M4/505;H01M10/052;H01M4/525;H01M4/131 |
主分类号 |
H01M4/505 |
| 代理机构 |
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代理人 |
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| 主权项 |
1. A three-component, layered-layered-spinel composite lithium metal oxide electrode material, which in an initial state has the formula:
y[xLi2MO3.(1-x)LiM′O2].(1-y)Li1+dMn2-z-dM″zO4; wherein: 0≦x≦1; 0.75≦y<1; 0≦z≦2; 0≦d≦0.2; z-d≦2; M comprises one or more metal ions that together have a combined average oxidation state of +4; M′ comprises one or more metal ions that together have a combined average oxidation state of +3; and M″ comprises one or more metal ions that together with the Mn and excess proportion, d, of lithium, have a combined average oxidation state of +3.5; and wherein the LiM″O4 component comprises a spinel crystal lattice structure, each of the Li2MO3 and the LiM″O2 components thereof comprise layered crystal lattice structures; and at least one of M, M′, and M″ comprises Co. |
| 地址 |
Chicago IL US |
