发明授权
- 专利标题: Anode active material, secondary battery, electric power tool, electrical vehicle, and electric power storage system
- 专利标题(中): 阳极活性材料,二次电池,电动工具,电动车辆和蓄电系统
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申请号: US13226105申请日: 2011-09-06
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公开(公告)号: US09112223B2公开(公告)日: 2015-08-18
- 发明人: Kazuaki Takada , Hiroshi Inoue , Satoshi Mizutani , Kazuhiko Yoshida , Keitaro Matsui , Koichiro Hirata
- 申请人: Kazuaki Takada , Hiroshi Inoue , Satoshi Mizutani , Kazuhiko Yoshida , Keitaro Matsui , Koichiro Hirata
- 申请人地址: JP
- 专利权人: SONY CORPORATION
- 当前专利权人: SONY CORPORATION
- 当前专利权人地址: JP
- 代理机构: Sheridan Ross P.C.
- 优先权: JPP2010-204626 20100913
- 主分类号: H01M4/38
- IPC分类号: H01M4/38 ; B60L11/18 ; H01M10/0525
摘要:
A secondary battery includes a cathode, an anode containing an anode active material, and an electrolytic solution. The anode active material contains tin, iron, cobalt, carbon, and titanium as an element. In the anode active material, a carbon content is from 9 mass % to 30 mass % both inclusive, a ratio of cobalt to total of iron and cobalt is from 10 mass % to 80 mass % both inclusive, a ratio of the total of iron and cobalt to total of tin, iron, and cobalt is from 11.3 mass % to 26.3 mass % both inclusive, a titanium content is from 0.5 mass % to 8 mass % both inclusive, and half-width of diffraction peak obtained by X-ray diffraction (peak obtained where diffraction angle of 2θ is from 34 deg to 37 deg both inclusive) is 1 deg or more.