发明名称 |
POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS 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 |
US2011033750(A1) |
申请公布日期 |
2011.02.10 |
申请号 |
US20100937667 |
申请日期 |
2010.03.03 |
申请人 |
HOSOKAWA TAKASHI;OKADA YUKIHIRO;FUJITA HIDEAKI;ARIMOTO SHINJI |
发明人 |
HOSOKAWA TAKASHI;OKADA YUKIHIRO;FUJITA HIDEAKI;ARIMOTO SHINJI |
分类号 |
H01M4/525 |
主分类号 |
H01M4/525 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|