Invention Grant
US07691782B2 Active carbon, production method thereof and polarizable electrode 失效
活性炭,其生产方法和极化电极

  • Patent Title: Active carbon, production method thereof and polarizable electrode
  • Patent Title (中): 活性炭,其生产方法和极化电极
  • Application No.: US10534763
    Application Date: 2003-11-12
  • Publication No.: US07691782B2
    Publication Date: 2010-04-06
  • Inventor: Masako Tanaka
  • Applicant: Masako Tanaka
  • Applicant Address: JP Tokyo
  • Assignee: Showa Denko K.K.
  • Current Assignee: Showa Denko K.K.
  • Current Assignee Address: JP Tokyo
  • Agency: Sughrue Mion, PLLC
  • Priority: JP2002-329490 20021113
  • International Application: PCT/JP03/14379 WO 20031112
  • International Announcement: WO2004/043859 WO 20040527
  • Main IPC: C01B31/08
  • IPC: C01B31/08
Active carbon, production method thereof and polarizable electrode
Abstract:
The present invention relates to an active carbon containing an alkaline earth metal compound inside the particle and having a specific surface area of 10 to 2,000 m2/g, which is suitable to be used for polarizable electrodes in an electric double layer capacitor. The active carbon of the present invention enables to increase the capacitance of an electric double layer capacitor as well as to control the expansion of electrodes. The active carbon of the present invention can be obtained by adding an alkaline earth metal compound to a material such as pitch and performing heat treatment and activation.
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