发明授权
- 专利标题： Carbonaceous material for electric double layer capacitor and process for production thereof
- 专利标题（中）： 用于双电层电容器的碳质材料及其生产方法
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申请号： US09229763申请日： 1999-01-14
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公开(公告)号： US06258337B1公开(公告)日： 2001-07-10
- 发明人: Naohiro Sonobe , Aisaku Nagai , Tomoyuki Aita , Minoru Noguchi , Manabu Iwaida , Eisuke Komazawa
- 申请人： Naohiro Sonobe , Aisaku Nagai , Tomoyuki Aita , Minoru Noguchi , Manabu Iwaida , Eisuke Komazawa
- 优先权： JP73-21568 19980120
- 主分类号： C01B3102
- IPC分类号： C01B3102
摘要：
A carbonaceous electrode material for electric double layer capacitors having a large capacitor per volume, a low resistivity and a large bulk density, is provided as a carbonaceous material having a specific surface area of 800-2000 m2/g as measured by the nitrogen adsorption BET method, and an average layer-plane spacing of at most 0.36 nm as measured by the X-ray diffraction method. The carbonaceous material is preferably produced by carbonizing and activating a carbon precursor of pitch origin in an oxidizing atmosphere.