Unitika Ltd.

Osaka Gas Company Limited

Yoshiharu Tanaka

Keiichi Asami

Yoshiaki Iwaya

Yoshiteru Nakagawa

Hiroyuki Tajiri

Katsuyuki Touma

Shinji Okumura

A slurry containing a precursor fiber convertible to carbon fiber and/or a carbon fiber and, based on 100 parts by weight of the fiber, 10 to 300 parts by weight of a thermosetting resin, e.g. phenol resin, is processed into a random web. This web may contain a pitch or an organic granular material. The web is hot-pressed between a pair of belts while curing of the resin is inhibited to prepare a prepreg sheet. This sheet is disposed, leaving a clearance, in a mold having ribs on a molding surface and heated over the melting point of the resin for expansion and complete cure to provide a porous composite sheet equipped with grooves. This porous composite sheet is carbonized or graphitized to produce a porous carbonaceous material for use as a fuel cell electrode material and so on. This porous carbonaceous material has high homogeneity, gas permeability, electrical conductivity, heat conductivity and mechanical strength.

Porous carbonaceous material and a method for producing the same

Growing community of inventors

Uji, Japan

Yoshiharu Tanaka