发明授权
- 专利标题: Secondary cell
- 专利标题(中): 二次电池
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申请号: US937728申请日: 1992-09-01
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公开(公告)号: US5378561A公开(公告)日: 1995-01-03
- 发明人: Nobuhiro Furukawa , Masahisa Fujimoto , Noriyuki Yoshinaga , Koji Ueno
- 申请人: Nobuhiro Furukawa , Masahisa Fujimoto , Noriyuki Yoshinaga , Koji Ueno
- 申请人地址: JPX 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: JPX Osaka
- 优先权: JPX3-260738 19911008
- 主分类号: C01B31/02
- IPC分类号: C01B31/02 ; C04B35/528 ; H01M4/133 ; H01M4/525 ; H01M10/05 ; H01M10/052 ; H01N10/40 ; C01B31/07
摘要:
The present invention provides a secondary cell with an enlarged capacity, therefore enlarging a discharge capacity as well as improving charge/discharge cycle characteristics. The secondary cell has a carbon material for a negative electrode, wherein the spacing of (002) planes d.sub.002, a true density, a crystallite size in the direction of c axis Lc, a and specific surface area of the carbon material are restricted to ranges of 3.39.ANG. to 3.62.ANG., 1.70 g/cc to 2.20 g/cc, 10.ANG. to 50.ANG., and 2 m.sup.2 /g to 50 m.sup.2, respectively. The carbon material is selected from a carbon material group consisting of needle cokes, pitch cokes, and coke derived from furfuryl alcohol.
公开/授权文献
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