发明名称 |
HIGH ENERGY LITHIUM ION BATTERIES WITH PARTICULAR NEGATIVE ELECTRODE COMPOSITIONS |
摘要 |
Combinations of materials are described in which high energy density active materials for negative electrodes of lithium ion batteries. In general, metal alloy/intermetallic compositions can provide the high energy density. These materials can have moderate volume changes upon cycling in a lithium ion battery. The volume changes can be accommodated with less degradation upon cycling through the combination with highly porous electrically conductive materials, such as highly porous carbon and/or foamed current collectors. Whether or not combined with a highly porous electrically conductive material, metal alloy/intermetallic compositions with an average particle size of no more than a micron can be advantageously used in the negative electrodes to improve cycling properties.
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申请公布号 |
US2009305131(A1) |
申请公布日期 |
2009.12.10 |
申请号 |
US20090429438 |
申请日期 |
2009.04.24 |
申请人 |
KUMAR SUJEET;BUCKLEY JAMES P |
发明人 |
KUMAR SUJEET;BUCKLEY JAMES P. |
分类号 |
H01M10/26;H01M4/04;H01M4/38 |
主分类号 |
H01M10/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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