发明授权
US08257865B2 Electrode active material, electrode, lithium-ion secondary battery, method of making electrode active material, and method of making lithium-ion secondary battery
有权
电极活性物质，电极，锂离子二次电池，制造电极活性物质的方法，以及锂离子二次电池的制造方法
- 专利标题： Electrode active material, electrode, lithium-ion secondary battery, method of making electrode active material, and method of making lithium-ion secondary battery
- 专利标题（中）： 电极活性物质，电极，锂离子二次电池，制造电极活性物质的方法，以及锂离子二次电池的制造方法
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申请号： US12222360申请日： 2008-08-07
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公开(公告)号： US08257865B2公开(公告)日： 2012-09-04
- 发明人: Tadashi Suzuki , Kazuya Ogawa , Tsuyoshi Iijima , Satoshi Maruyama
- 申请人： Tadashi Suzuki , Kazuya Ogawa , Tsuyoshi Iijima , Satoshi Maruyama
- 申请人地址： JP Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Olfif & Berridge, PLC
- 优先权： JP2001-355253 20011120; JP2002-008684 20020117; JP2002-191503 20020628; JP2002-191504 20020628; JP2002-221287 20020730
- 主分类号： H01M10/44
- IPC分类号： H01M10/44 ; H01M4/13 ; H02J7/00
摘要：
The positive electrode active material in accordance with the present invention is used for a positive electrode for a lithium-ion secondary battery, includes Li, Mn, Ni, Co, and O atoms, and has a substantially halite type crystal structure. Specifically, it is preferably expressed by LiaMnbNicCodOe, where a is 0.85 to 1.1, b is 0.2 to 0.6, c is 0.2 to 0.6, d is 0.1 to 0.5, and e is 1 to 2 (the sum of b, c, and d being 1). Because of such composition and crystal structure, the positive electrode active material of the present invention reduces the amount of elution of the battery into the liquid electrolyte and enhances the stability at a high temperature.
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