发明名称 |
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY |
摘要 |
The invention provides a polyanion-based positive active material which can improve storage stability (especially, high temperature storage stability), charge and discharge cycle performance and the like of a lithium secondary battery, and a lithium secondary battery using the same. The positive active material for a lithium ion secondary battery contains lithium iron cobalt phosphate represented by the general formula: Li y Fe (1-x) Co x PO 4 (0 < x ‰¤ 0.019, 0 ‰¤ y ‰¤ 1.2). By using the positive active material for a lithium secondary battery, high temperature storage stability and charge and discharge cycle performance can be improved in comparison with a case where Li y FePO 4 containing no Co is used. By using the positive active material, a lithium ion secondary battery can be suitable for applications in fields of electric automobiles and industrial batteries in which long lives, high capacities, and high output powers are required. |
申请公布号 |
EP2287947(A1) |
申请公布日期 |
2011.02.23 |
申请号 |
EP20090750645 |
申请日期 |
2009.05.22 |
申请人 |
GS YUASA INTERNATIONAL LTD. |
发明人 |
FUJINO, YUKIKO;YASUNAGA, YOSHINOBU;FUJII, AKIHIRO;SHIBATA, YOHEI;KOHMOTO, MARIKO;EGAWA, TAKASHI;TABUCHI, TORU;NAKAGAWA, HIROE;INAMASU, TOKUO;NUKUDA, TOSHIYUKI |
分类号 |
H01M4/58;C01B25/45;H01M4/02;H01M4/136;H01M4/62;H01M10/052 |
主分类号 |
H01M4/58 |
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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