发明名称 |
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR PRODUCTION THEREOF, AND LITHIUM SECONDARY BATTERY |
摘要 |
There is provided a positive electrode active material for lithium secondary batteries which suppresses gelation when kneaded with a binder resin in producing a positive electrode material and provides excellent coating properties. The positive electrode active material for lithium secondary batteries comprises a lithium composite oxide represented by the following general formula (1) and a Ca atom contained in the lithium composite oxide. When the positive electrode active material is analyzed by X-ray diffraction using Cu- K± radiation as a radiation source, the intensity ratio (b/a) of (b) the diffraction peak at 2¸ = 18.7 ± 0.2° to (a) the diffraction peak at 2¸ = 37.4 ± 0.2° derived from CaO is from 10 to 150. Li x Ni 1-y-z Co y Me z O 2 (1) In the formula, Me represents a metal element having an atomic number of 11 or more other than Co and Ni; and x, y, and z are represented by the formulae 0.98 ‰¤ x ‰¤ 1.20, 0 < y ‰¤ 0.5, and 0 < z ‰¤ 0.5, respectively, provided that y + z < 1. |
申请公布号 |
EP2178138(A1) |
申请公布日期 |
2010.04.21 |
申请号 |
EP20080791482 |
申请日期 |
2008.07.24 |
申请人 |
NIPPON CHEMICAL INDUSTRIAL CO., LTD. |
发明人 |
FUKUCHI, MINORU;AWANO, HIDEKAZU;ANBE, YUUKI |
分类号 |
H01M4/505;H01M10/052;C01G53/00;C01G53/04;H01M4/36;H01M4/525 |
主分类号 |
H01M4/505 |
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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