Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Cataler Corporation

Tatsuya Hatanaka

Tatsumi Hioki

Hiroaki Takahashi

Tomoaki Terada

Tsuyoshi Sasaki

Takahiro Nagata

Jun Sugiyama

Kazuma Shinozaki

Tatsuo Noritake

Atsuhito Okamoto

A method for producing an electrode catalyst substrate is provided herein, which comprises a carbon film forming step of forming a porous carbon film on a base, a hydrophilization step of hydrophilizing the porous carbon film, an immersion step of immersing the base in a solution prepared by dissolving catalytic metal ions in a polar solvent, and a reduction step of adding a reducing agent to the solution and thus reducing the catalytic metal ions. An electrode catalyst substrate obtained by the method and a polymer electrolyte fuel cell in which the electrode catalyst obtained by the method is used for anodes and/or cathodes are also provided herein. In the electrode catalyst of the present invention, fine catalyst particles are loaded in a uniform and highly dispersed manner.

Electrode catalyst substrate and method for producing the same, and polymer electrolyte fuel cell

Disclosed is a positive electrode material for a secondary lithium battery excellent in high temperature cycle characteristics which is a lithium manganese oxyfluoride having a spinel structure, wherein the oxyfluoride has a composition represented by the composition formula:

Positive electrode material for secondary lithium battery

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Aichi, Japan

Tatsuya Hatanaka