Nichias Corporation

Toyota Jidosha Kabushiki Kaisha

Tsuyoshi Inagaki

Toshiyuki Suzuki

Yasuyuki Asai

Chisato Kato

Kouji Nagai

Atsushi Omura

Tetsuo Ohinata

Toru Segawa

Sinzaburou Suzuki

Hideto Ishikawa

Shinzaburou Suzuki

Naochiro Takeshita

Hideto Nakano

The present invention provides a separator for fuel cell containing: a flat plate member; a gas passage-side member provided on one side of the flat plate member and having passages for passing a reactant gas therethrough; and a cooling water passage-side member provided on the other side of the flat plate member and having passages for passing cooling water therethrough, wherein the gas passage-side member and the cooling water passage-side member are formed from first and second conductive resin compositions which are different from each other, respectively, and the difference between the thermal expansion coefficient of the gas passage-side member in its thickness direction and the thermal expansion coefficient of the cooling water passage-side member in a direction perpendicular to its thickness direction is 25&#xd7;10/K or smaller, and wherein the flat plate member contains at least one of the first and second conductive resin compositions.

Separator for fuel cell and process for producing the same

A fuel cell separator containing conductive material and epoxy resin is provided. In the fuel cell, the epoxy resin is made of solid epoxy resin whose epoxy equivalent weight is 300-500. Further, according to another fuel cell separator, raw materials containing not lower than 60 weight % of conductive material and 34-40 weight % of resin material are kneaded, and adjusted to have a flow index of 5-20%. A kneaded compound is compression-molded so that a fuel cell separator is obtained.

Fuel cell separator and method for manufacturing the same

Growing community of inventors

Shizuoka, Japan

Tsuyoshi Inagaki