- 专利标题： Positive electrode active material and non-aqueous electrolyte secondary battery containing the same
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申请号： US11797130申请日： 2007-05-01
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公开(公告)号： US08349287B2公开(公告)日： 2013-01-08
- 发明人: Tsutomu Ohzuku , Hiroshi Yoshizawa , Masatoshi Nagayama
- 申请人： Tsutomu Ohzuku , Hiroshi Yoshizawa , Masatoshi Nagayama
- 申请人地址： JP Osaka JP Osaka
- 专利权人： Panasonic Corporation,Osaka City University
- 当前专利权人： Panasonic Corporation,Osaka City University
- 当前专利权人地址： JP Osaka JP Osaka
- 代理机构： McDermott Will & Emery LLP
- 优先权： JP2001-328219 20011025
- 主分类号： C01D1/02
- IPC分类号： C01D1/02 ; C01G53/04 ; C01G45/12 ; H01M4/13 ; H01M4/58 ; H01M4/00
摘要：
The present invention relates to a positive electrode active material comprising a lithium-containing composite oxide containing nickel with an oxidation state of 2.0 to 2.5 and manganese with an oxidation state of 3.5 to 4.0, the oxidation state determined by the shifts of energy at which absorption maximum is observed in the X-ray absorption near-K-edge structures, and to a non-aqueous electrolyte secondary battery using the same, the positive electrode active material being characterized in having a high capacity, a long storage life and excellent cycle life.