发明授权
- 专利标题： Active material of positive electrode for nonaqueous electrolyte secondary battery and process for producing the same
- 专利标题（中）： 非水电解质二次电池用正极活性物质及其制造方法
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申请号： US10513925申请日： 2003-04-30
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公开(公告)号： US07422824B2公开(公告)日： 2008-09-09
- 发明人: Shinji Arimoto , Takahiro Okuyama , Masatoshi Nagayama , Hiroshi Yoshizawa
- 申请人： Shinji Arimoto , Takahiro Okuyama , Masatoshi Nagayama , Hiroshi Yoshizawa
- 申请人地址： JP Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： McDermott Will & Emery LLP
- 优先权： JP2002-142145 20020516
- 国际申请： PCT/JP03/05555 WO 20030430
- 国际公布： WO03/098722 WO 20031127
- 主分类号： H01M4/58
- IPC分类号： H01M4/58
摘要：
A positive electrode active material for a non-aqueous electrolyte secondary battery includes a particle of a composite oxide which contains Li and Co, wherein: the composite oxide further contains an element M1 and an element M2; the element M1 is at least one selected from the group consisting of Mg, Cu and Zn; the element M2 is at least one selected from the group consisting of Al, Ca, Ba, Sr, Y and Zr; the element M1 is uniformly distributed in the particle; and the element M2 is distributed in the surface portion of the particle more than in the inside thereof.