Toyota Jidosha Kabushiki Kaisha

Cataler Corporation

Nippon Steel Chemical & Material Co., Ltd.

Kotaro Horiai

Mikihiro Kataoka

Tomoaki Terada

Nobuaki Mizutani

Yusuke Itoh

Toru Yamamoto

Mikihiro Hori

Kenji Yamamoto

Yuki Makino

Kohei Koyamada

Yuusuke Itou

An electrode catalyst for a fuel cell, the electrode catalyst having high initial activity and being capable of long-term retention of said activity; and a fuel cell using the electrode catalyst for a fuel cell. The electrode catalyst for a fuel cell includes catalyst metal particles that include platinum or a platinum alloy, and carrier particles that carry said catalyst metal particles, wherein the carrier particles are a carbonaceous material having a cumulative pore volume of 0.10 cc/g or less in the diameter range of 2 nm or less, and a BET specific surface area of greater than 900 m/g; and a fuel cell comprising the electrode catalyst for a fuel cell.

Electrode catalyst for fuel cell, and fuel cell using same

The present invention relates to an electrode catalyst for a fuel cell that includes a carbon support () having pores () and catalyst particles containing platinum or a platinum alloy supported on the carbon support (). The pores () of the carbon support () have a mode size of pores () in a range of 2.1 nm to 5.1 nm. A total pore volume of the pores () of the carbon support () is in a range of 21 cm/g to 35 cm/g. A distance between the catalyst particles and a surface of the carbon support () is in a range of 2.0 nm to 12 nm as a distance of a 50% cumulative frequency.

Electrode catalyst for fuel cell, method of producing the same, and fuel cell

An electrode catalyst and a method for producing the electrode catalyst are described, in which the electrode catalyst includes catalyst metal particles containing platinum or a platinum alloy, and carrier particles supporting the catalyst metal particles. The carrier particles are made of a carbonaceous material with a BET specific surface area of 700 m/g or more. The catalyst metal particles have an average particle size of 2.5 to 4.5 nm, and a standard deviation of the particle size of the catalyst metal particles is 1.30 nm or less. The electrode catalyst has a high initial activity and is able to maintain that activity over a long period of time.

Electrode catalyst for fuel cell and method of production of same

An electrode catalyst for fuel cells that can inhibit an increase in gas diffusion resistance includes a carbon material having a ratio of a peak intensity Iderived from an amorphous structure to a peak intensity Iderived from a graphite structure in an X-ray diffraction spectrum (ratio I/I) of 0.90 or less as a catalyst-supporting carrier.

Electrode catalyst for fuel cells

Growing community of inventors

Kakegawa, Japan

Kotaro Horiai