The University of Tokyo

Fujifilm Corporation

Japan Technological Research Association of Artificial Photosynthetic Chemical Process

Toyota Jidosha Kabushiki Kaisha

Tsutomu Minegishi

Kazunari Domen

Jun Kubota

Chisato Katayama

Hiroyuki Kobayashi

Haruyuki Nakanishi

Koichiro Ueda

Takashi Hisatomi

Atsushi Ohnishi

Chika Miwada

Chizhong Wang

Provided are a photocatalyst electrode for oxygen generation exhibiting a satisfactory onset potential, and a module including this photocatalyst electrode. The photocatalyst electrode for oxygen generation includes a current collector layer; a photocatalyst on the current collector layer; and a promoter supported on at least a portion of the photocatalyst, in which the promoter contains a first metal oxide having an oxygen generation overvoltage of 0.4 V or lower, and a second metal oxide having an oxygen generation overvoltage of higher than 0.4 V.

Photocatalyst electrode for oxygen generation and module

The present invention provides an electrode for water-splitting reaction that is capable of increasing conductive path between a photocatalyst layer and a current collecting layer without inhibiting light absorption by photocatalyst, which comprises: a photocatalyst layer; a current collecting layer; and a contact layerthat contains semiconductor or good conductor and is provided between the photocatalyst layerand the current collecting layer, wherein the contact layeris provided along the surface shape of the photocatalyst layerat the current collecting layerside of the photocatalyst layer

Electrode for water-splitting reaction and method for producing the same

Provided is a method for producing a photocatalyst electrode for water decomposition that exhibits excellent detachability between the substrate and the photocatalyst layer and exhibits high photocurrent density. The method for producing a photocatalyst electrode for water decomposition of the invention includes: a metal layer forming step of forming a metal layer on one surface of a first substrate by a vapor phase film-forming method or a liquid phase film-forming method; a photocatalyst layer forming step of forming a photocatalyst layer by subjecting the metal layer to at least one treatment selected from an oxidation treatment, a nitriding treatment, a sulfurization treatment, or a selenization treatment; a current collecting layer forming step of forming a current collecting layer on a surface of the photocatalyst layer, the surface being on the opposite side of the first substrate; and a detachment step of detaching the first substrate from the photocatalyst layer.

Method for producing photocatalyst electrode for water decomposition

Provided are a photocatalyst having higher activity for hydrogen production through water splitting and a photoelectrode comprising the photocatalyst. The photocatalyst for water splitting of the present invention comprises a Ga selenide, an Ag&#x2014;Ga selenide, or both thereof.

Photocatalyst for water splitting comprising gallium selenide and photoelectrode for water splitting comprising the same

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Tokyo, Japan

Tsutomu Minegishi