Osaka Gas Company Limited

Unitika Ltd.

Kri, Inc.

Hiroyuki Tajiri

Shiro Kato

Shizukuni Yata

Hajime Kinoshita

Haruo Kikuta

Keiichi Asami

Yoshiaki Iwaya

Yoshiteru Nakagawa

Katsuyuki Touma

Shinji Okumura

Yoshiharu Tanaka

The invention provides a non-aqueous secondary battery having positive and negative electrodes and non-aqueous electrolyte containing lithium salt which has an energy capacity of 30 Wh or more, a volume energy density of 180 Wh/l or higher, which battery has a flat shape and is superior in heat radiation characteristic, used safely and particularly preferably used for a energy storage system. The invention also provides a control method of the secondary battery.

Non-aqueous secondary battery and its control method

Non-aqueous secondary cell and method for controlling the same

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

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Osaka, Japan

Hiroyuki Tajiri