发明名称 |
POSITIVE ELECTRODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY |
摘要 |
There is provided a positive electrode active material having a specific surface area of 0.1 to 0.5 m 2 /g, which contains a large number of crystal grains containing primary particles of 5 to 20 µm in particle diameter, composed of lithium manganate of spinel structure containing lithium and manganese as the constituent elements, and a bismuth compound containing bismuth. The proportion of the primary particles contained in the large number of crystal grains is 70 areal % or more and the proportion of the bismuth contained in the bismuth compound is 0.005 to 0.5 mol % relative to the manganese contained in the lithium manganate. |
申请公布号 |
EP2447214(A2) |
申请公布日期 |
2012.05.02 |
申请号 |
EP20100748892 |
申请日期 |
2010.06.21 |
申请人 |
NGK INSULATORS, LTD. |
发明人 |
YURA, YUKINOBU;KOBAYASHI, NOBUYUKI;NANATAKI, TSUTOMU;KAIGAWA, KAZUYUKI |
分类号 |
C01G45/00;H01M4/36;H01M4/505 |
主分类号 |
C01G45/00 |
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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