Catalyst and use of same
AssigneeJapan Science and Technology Agency
InventorsMiho Yamauchi, Masaaki Sadakiyo, Sho Kitano, Shinichi Hata
Life of this patent
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Abstract
A catalyst comprising: a titanium oxide having an anatase-type crystal structure, and having the vertices and the ridge lines, wherein in a single titanium oxide particle, a vertex density per unit surface area is 8.0×10−4 nm−2 or more, and a ridge line density per unit surface area is 5.0×10−2 nm or more, or a ridge line density per unit volume is 8.0×10−3 nm−2 or more. A complex comprising: a material having a porous structure; and said catalyst. A membrane electrode assembly comprising: an anode; cathode; and an electrolyte membrane, wherein the cathode carries said catalyst on at least a surface of the cathode.
Claims12
A cathode comprising:
- a carrier and
- a layer of an electrochemical catalyst carried on at least the surface of the carrier,
- wherein the carrier is formed of a material having metal conductivity and is configured that electrons supplied from the anode can be transferred to the electrochemical catalyst,
- wherein the electrochemical catalyst comprises a titanium oxide having an anatase-type crystal structure, and having the vertices and the ridge lines, and
- wherein in a single titanium oxide particle, a vertex density per unit surface area is 8.0×10−4 nm−2 or more, or a vertex density per unit volume is 7.0×10−4 nm−3 or more, and a ridge line density per unit surface area is 5.0×10−2 nm−1 or more, or a ridge line density per unit volume is 8.0×10−3 nm−2 or more.
Dependencies are inferred from the claim text.