发明授权
- 专利标题： Lithium ion secondary battery, positive electrode active material, positive electrode, electric tool, electric vehicle, and power storage system
- 专利标题（中）： 锂离子二次电池，正极活性物质，正极，电动工具，电动车辆和蓄电系统
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申请号： US13326013申请日： 2011-12-14
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公开(公告)号： US09077036B2公开(公告)日： 2015-07-07
- 发明人: Masaharu Senoue , Kenichi Kawase , Takakazu Hirose , Masayuki Ihara
- 申请人： Masaharu Senoue , Kenichi Kawase , Takakazu Hirose , Masayuki Ihara
- 申请人地址： JP Tokyo
- 专利权人： SONY CORPORATION
- 当前专利权人： SONY CORPORATION
- 当前专利权人地址： JP Tokyo
- 代理机构： K&L Gates LLP
- 优先权： JP2010-293269 20101228
- 主分类号： H01M4/485
- IPC分类号： H01M4/485 ; H01M4/505 ; H01M4/525
摘要：
A lithium ion secondary battery including a positive electrode; a negative electrode; and an electrolytic solution, wherein the positive electrode includes a first lithium composite oxide and a second lithium composite oxide expressed by following formula (1) as a positive electrode active material, and wherein the second lithium composite oxide has a charge capacity greater than the first lithium composite oxide Li1+a(NibM1cM21−b−c)1.5−0.5aO2 (1) wherein, M1 represents at least one selected from among elements of group 13 to group 15 in an extended periodic table of elements excluding boron B, or carbon C, or nitrogen N, M2 represents at least one selected from among elements of group 3 to group 12, and a, b, and c satisfy relationships of 0.95≦a≦1.05, 0
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