发明申请
- 专利标题: Lithium-ion secondary battery and method of charging lithium-ion secondary battery
- 专利标题(中): 锂离子二次电池及锂离子二次电池充电方法
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申请号: US11066247申请日: 2005-02-25
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公开(公告)号: US20050233218A1公开(公告)日: 2005-10-20
- 发明人: Kazuya Ogawa , Tsuyoshi Iijima , Satoshi Maruyama
- 申请人: 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
- 优先权: JPP2004-050356 20040225
- 主分类号: H01M10/05
- IPC分类号: H01M10/05 ; H01M2/02 ; H01M4/13 ; H01M4/133 ; H01M4/587 ; H01M4/62 ; H01M6/16 ; H01M6/42 ; H01M10/04 ; H01M10/0525 ; H01M10/0585 ; H01M10/44 ; H01M4/58
摘要:
A lithium-ion secondary battery device comprises a positive electrode collector having a surface formed with a positive electrode active material layer containing a positive electrode active material; a negative electrode collector having a surface formed with a negative electrode active material layer containing a negative electrode active material; an electrically insulating porous separator; and an electrolyte containing a lithium salt and being in contact with the positive electrode active material layer, negative electrode active material layer, and separator. The negative electrode active material is a carbon material having a graphite structure. The amount of the carbon material supported by the negative electrode active material layer is 2.0 to 4.0 mg/cm2. The graphite structure in an X-ray diffraction pattern of the carbon material exhibits a peak intensity P101 of (101) plane and a peak intensity P100 of (100) plane having a ratio (P101/P100) of 2.0 to 2.8 therebetween.