Toyota Jidosha Kabushiki Kaisha

Cataler Corporation

Toshihiro Ikai

Masahide Miura

Hisao Kato

Shogo Shirakawa

Yu Morimoto

Isao Naito

Kosuke Iizuka

Takahiro Nagata

Hiroki Nihashi

Yousuke Horiuchi

Tomohiro Ishida

Godai Kitayama

Tomoyuki Nagai

Shinya Nagashima

Hajime Murata

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.

A cell for electrochemical measurement is a cell for electrochemical measurement used for measurement by an electron beam that passes through an observation window, a MEMS chip for observation which includes a laminate including an electron-transmissive thin film and a substrate and in which a working electrode and a counter electrode are provided on a thin film and an MEMS chip for sealing which is a laminate including an electron-transmissive thin film and a substrate are disposed apart from each other, and there are areas in both laminates in which the substrates are not present, and an observation window including the thin film is formed in the areas, and the working electrode overlaps the observation window in both laminates and has a plurality of through-holes on an observation window in a direction in which an electron beam passes.

Cell for electrochemical measurement

A method of producing a displacement plating precursor, including a deposition step of depositing a Cu layer on a surface of a core particle formed of Pt or a Pt alloy by contacting a Cu ion-containing acidic aqueous solution with at least a portion of a Cu electrode, and contacting the Cu electrode with the core particle or with a composite, in which the core particle is supported on an electroconductive support, within the acidic aqueous solution or outside the acidic aqueous solution, and moreover contacting the core particle with the acidic aqueous solution under an inert gas atmosphere.

Method of producing displacement plating precursor

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Okazaki, Japan

Toshihiro Ikai