发明名称 |
POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY |
摘要 |
A positive electrode active material for a non-aqueous electrolyte secondary battery of the present invention includes composite oxide particles including lithium, nickel, and an element M, the element M being at least one of aluminum and cobalt. The composite oxide particles include primary particles and each particle of the primary particles includes a surface portion and an inner portion. A content of the element M in the surface portion is higher than a content of the element M in the inner portion, and a proportion of the primary particles relative to all of the composite oxide particles is 80 to 100 wt%. According to the invention, a positive electrode active material for a non-aqueous electrolyte secondary battery that has excellent cycle characteristics and storage characteristics and is suitable for use in a wide range of the state of charge and in a high-temperature environment and a non-aqueous electrolyte secondary battery using the same can be obtained. |
申请公布号 |
EP2264815(A1) |
申请公布日期 |
2010.12.22 |
申请号 |
EP20100748509 |
申请日期 |
2010.03.03 |
申请人 |
PANASONIC CORPORATION |
发明人 |
HOSOKAWA, TAKASHI;OKADA, YUKIHIRO;FUJITA, HIDEAKI;ARIMOTO, SHINJI |
分类号 |
H01M4/525;H01M4/36 |
主分类号 |
H01M4/525 |
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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