Toyota Jidosha Kabushiki Kaisha

Cataler Corporation

Tomohiro Ishida

Hiromitsu Tanaka

Tetsuo Nagami

Mikihiro Kataoka

Yousuke Horiuchi

Toshihiro Ikai

Godai Kitayama

A fuel cell electrode catalyst includes: catalyst metal particles containing at least one of platinum or a platinum alloy; and support particles supporting the catalyst metal particles. The crystallite size 2r obtained from an X-ray diffraction image of the catalyst metal particles is 3.8 nm or less, where r represents a crystallite radius of the catalyst metal particles obtained from the X-ray diffraction image. The amount of CO adsorption Y (mL/g-Pt) on the fuel cell electrode catalyst satisfies Y≤40.386/r+1.7586.

Fuel cell electrode catalyst, method for selecting the same, and fuel cell including the same

A fuel cell electrode catalyst includes catalyst metal particles and electrically conductive support particles supporting the catalyst metal particles. In the fuel cell electrode catalyst, a proportion of a surface area occupied by the catalyst metal particles with particle sizes of 4.5 nm or less to a surface area of the catalyst metal particles calculated from a transmission electron microscope image is 5% or less.

An electrode catalyst for a fuel cell including: a carbon support; and catalytic metal supported on the carbon support, the catalytic metal being selected from platinum or a platinum alloy, in which the carbon support has a crystallite size of (002) plane of carbon within a range of 5.0 nm or more and has a specific surface area within a range of 95 m/g to 170 m/g, and the catalytic metal has a crystallite size of (220) plane of platinum within a range of 4.5 nm or less.

Electrode catalyst for fuel cell and method of producing the same, and cathode, anode, and fuel cell including electrode catalyst

Provided is an electrode catalyst for a fuel cell including: a carbon support; and catalytic metal supported on the carbon support, the catalytic metal being selected from platinum or a platinum alloy, in which the carbon support has a crystallite size of (002) plane of carbon within a range of 5.0 nm or more and has a specific surface area within a range of 95 m/g to 170 m/g, and the catalytic metal has a crystallite size of (220) plane of platinum within a range of 4.5 nm or less.

Growing community of inventors

Kakegawa, Japan

Tomohiro Ishida