发明名称 |
Positive-electrode material for lithium secondary battery, secondary battery employing the same, and process for producing positive-electrode material for lithium secondary battery |
摘要 |
A subject for the invention is to provide a positive-electrode material, which has high capacity and high output and is inhibited from suffering a decrease in output with repetitions of charge and use. The invention provides a positive-electrode material for lithium secondary battery, which comprises a secondary particle of a lithium/transition metal composite oxide containing boron and/or bismuth, and wherein the atomic ratio of the sum of boron and bismuth to the sum of the metallic elements other than lithium, boron, and bismuth in a surface part of the secondary particle is from 5 times to 70 times the atomic ratio in the whole secondary particle.
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申请公布号 |
US7998619(B2) |
申请公布日期 |
2011.08.16 |
申请号 |
US20070758199 |
申请日期 |
2007.06.05 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
KIKUCHI KAZUHIRO;SHIMA KOJI |
分类号 |
H01M4/485;C01B35/10;C01G29/00;C01G53/00;H01M4/02;H01M4/131;H01M4/48;H01M4/50;H01M4/505;H01M4/52;H01M4/525;H01M10/0525;H01M10/36 |
主分类号 |
H01M4/485 |
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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