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Electrochemical double-layer energy storage cells with high energy density and high power density

  • US 20050014643A1
  • Filed: 11/26/2001
  • Published: 01/20/2005
  • Est. Priority Date: 11/27/2000
  • Status: Abandoned Application
First Claim
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1. A process for the preparation of a porous carbonaceous material comprising the following stages:

  • a) carbonization of wood, preferably of softwood, and advantageously of pine wood, at a temperature of between 500 and 800°

    C.;

    b) thermal activation of the wood carbon obtained in a thin layer at a temperature of between 800 and 1 100°

    C. in the presence of steam and/or of carbon dioxide;

    the activated carbon obtained after stage b) exhibiting a volume of mesopores of less than 75% of the total pore volume and a volume of micropores of less than 75% of the total pore volume.

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