发明申请
- 专利标题: NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
- 专利标题(中): 非水电解质二次电池
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申请号: US13120328申请日: 2009-09-17
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公开(公告)号: US20110177391A1公开(公告)日: 2011-07-21
- 发明人: Kazunari Ookita , Fumiharu Niina , Hiroyuki Fujimoto , Chihiro Yada
- 申请人: Kazunari Ookita , Fumiharu Niina , Hiroyuki Fujimoto , Chihiro Yada
- 申请人地址: JP Moriguchi-shi, Osaka
- 专利权人: SANYO ELECTRIC CO., LTD.
- 当前专利权人: SANYO ELECTRIC CO., LTD.
- 当前专利权人地址: JP Moriguchi-shi, Osaka
- 优先权: JP2008-247391 20080926
- 国际申请: PCT/JP2009/066244 WO 20090917
- 主分类号: H01M4/36
- IPC分类号: H01M4/36 ; H01M4/50 ; H01M4/52 ; H01M4/583
摘要:
A non-aqueous electrolyte secondary battery using lithium-containing transition metal composite oxide which has a layer structure, contains a lot of Ni and Mn and is inexpensive as a positive electrode active material and attaining high output characteristics even under low temperature environment is provided.The non-aqueous electrolyte secondary battery includes a positive electrode 11 containing a positive electrode active material, a negative electrode 12 containing a negative electrode active material and a non-aqueous electrolyte 14 having lithium ion conductivity, wherein lithium-containing transition metal composite oxide having a layer structure and being represented by a general formula Li1+xNiaMnbCocO2+d wherein x, a, b, c and d satisfy x+a+b+c=1, 0.25≦a≦0.60, 0.25≦b≦0.60, 0≦c≦0.40, 0≦x≦0.10, 0.7≦a/b≦2.0 and −0.1≦d≦0.1 is used as the positive electrode active material of positive electrode, and the surface of positive electrode active material is covered with an amorphous carbon material and a conductive agent of amorphous carbon material is inserted between particles of the positive electrode active material.