Nissan Motor Company Limited

Ishifuku Metal Industry Co., Ltd.

Toyo Tanso Co., Ltd.

Yoshihisa Furuya

Atsushi Ohma

Tetsuya Mashio

Ken Akizuki

Takahiro Morishita

Kazuki Arihara

Yoshio Shodai

Takehito Nishikawa

Hideo Inoue

Provided is a catalyst having excellent gas transportability. Disclosed is a catalyst comprising a catalyst support and a catalyst metal supported on the catalyst support, wherein the catalyst includes pores having a radius of less than 1 nm and pores having a radius of 1 nm or more, wherein a pore volume of the pores having a radius of less than 1 nm is 0.3 cc/g support or more or a mode radius of a pore distribution of the pores having a radius of less than 1 nm is 0.3 nm or more and less than 1 nm, and wherein the catalyst metal is supported inside the pores having a radius of 1 nm or more.

Catalyst and electrode catalyst layer, membrane electrode assembly, and fuel cell using the catalyst

[Object] Provided is a catalyst having excellent gas transportability. [Solving Means] Disclosed is a catalyst comprising a catalyst support and a catalyst metal supported on the catalyst support, wherein the catalyst includes pores having a radius of less than 1 nm and pores having a radius of 1 nm or more, wherein a pore volume of the pores having a radius of less than 1 nm is 0.3 cc/g support or more or a mode radius of a pore distribution of the pores having a radius of less than 1 nm is 0.3 nm or more and less than 1 nm, and wherein the catalyst metal is supported inside the pores having a radius of 1 nm or more.

Provided is an electrode catalyst having enhanced catalytic activity (oxygen reduction reaction (ORR) specific activity). Disclosed is an electrode catalyst containing a catalyst metal particle(s) and a spacer(s) supported on a catalyst support, in which a ratio (d/d) of an average diameter of the spacer(s) (d) with respect to an average diameter of the catalyst metal particle(s) (d) is from 3.5 to 10.

Electrode catalyst, method for producing the same, and electrode catalyst layer using electrode catalyst

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Fujisawa, Japan

Yoshihisa Furuya