- 专利标题: Carbon material for electric double layer capacitor electrodes
- 专利标题(中): 双层电容电极碳材料
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申请号: US10703635申请日: 2003-11-10
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公开(公告)号: US07256157B2公开(公告)日: 2007-08-14
- 发明人: Hirotaka Tsuruya , Koichi Kanno , Hitoshi Sakamoto , Yuzuru Takahashi
- 申请人: Hirotaka Tsuruya , Koichi Kanno , Hitoshi Sakamoto , Yuzuru Takahashi
- 申请人地址: JP Tokyo
- 专利权人: Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人: Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人地址: JP Tokyo
- 代理机构: Antonelli, Terry, Stout & Kraus, LLP.
- 优先权: JP2000/278051 20000913
- 主分类号: C01B31/12
- IPC分类号: C01B31/12
摘要:
A carbon material for electric double layer capacitor electrodes which is obtained by a heat treatment and an activation treatment of a material pitch having a softening point in a range of 150 to 350° C., a ratio of amounts by atom of hydrogen to carbon (H/C) in a range of 0.50 to 0.90 and a content of optically anisotropic components of 50% or greater. The material pitch is preferably a synthetic pitch obtained by polymerizing a condensed polycyclic hydrocarbon such as naphthalene, methylnaphthalene, anthracene, phenanthrene, acenaphthene, acenaphthylene and pyrene in the presence of an ultra-strong acid catalyst such as a hydrogen fluoride-boron trifluoride complex. Electric double layer capacitors having a high electrode density and a high electrostatic capacity per unit volume can be constructed using the carbon material.
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