Other

Sanyo Electric Co., Ltd.

Junichi Ozaki

Akira Hamada

Yoshihiro Ikoma

Asao Ooya

Asao Oya

The invention provides a high activity electrode catalyst for fuel cells whose catalytic activity due to an expensive noble metal, such as platinum, has been improved to a higher level through the use of an inexpensive material to enable a reduction in noble metal catalyst usage, a fuel cell in which the above high activity electrode catalyst is used, a membrane-electrode assembly in which the above high activity electrode catalyst is used, and a gas diffusion electrode in which the above high activity electrode catalyst is used. Use is made of an electrode catalyst for fuel cells comprising a carbon material that contain catalytically induced turbostratic structures in parts of its structure and noble metal particles supported thereon, or an electrode catalyst for fuel cells comprising the catalyst mentioned above and a catalyst comprising carbon black and noble metal particles supported thereon as mixed together or an electrode catalyst comprising the catalyst mentioned above and carbon black as mixed together.

Electrode catalyst for use in a fuel cells, and fuel cell and electrode utilizing same

To provide an electrode catalyst for a fuel cell comprising inexpensive materials substituting for a precious metal catalyst such as platinum, and a fuel cell using the same. Poly (furfuryl alcohol) containing ferrocene is prepared by dissolving ferrocene corresponding to 1 to 3 wt % on the iron atomic basis in furfuryl alcohol, adding hydrochloric acid (2 mol/dm) thereto as a polymerization initiator, and then polymerizing them in the air at 70&#xb0; C. for 48 hours. Random layersdeveloped into onion-like lamination layers around iron particles are produced by heating this poly (furfuryl alcohol) up to 700&#xb0; C. at a temperature rising rate of 150&#xb0; C./h, and then holding the state for an hour to carbonize it. The iron carbon complex having this structure of the random layersis applied especially to the cathode side as the electrode catalyst, to form the cells for the fuel cell.

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Kiryu, Japan

Junichi Ozaki