The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 2010
Filed:
Nov. 30, 2004
Kenichiro Ota, Koganei, JP;
Nobuyuki Kamiya, Yokohama, JP;
Shigenori Mitsushima, Kamakura, JP;
Akimitsu Ishihara, Hiratsuka, JP;
Kazunari Doumen, Sagamihara, JP;
Michikazu Hara, Yokohama, JP;
Kenichiro Ota, Koganei, JP;
Nobuyuki Kamiya, Yokohama, JP;
Shigenori Mitsushima, Kamakura, JP;
Akimitsu Ishihara, Hiratsuka, JP;
Kazunari Doumen, Sagamihara, JP;
Michikazu Hara, Yokohama, JP;
Japan Science and Technology Agency, Kawaguchi-shi, JP;
Abstract
An electrode catalyst that maintains catalytic activity under conditions of an electrode potential as high as 0.4 V or above and exhibits improved stability. The metal oxynitride electrode catalyst is composed of an oxynitride containing at least one transition metal element selected from the group consisting of La, Ta, Nb, Ti, and Zr, the metal oxynitride electrode catalyst being used at a potential of 0.4 V or higher relative to the reversible hydrogen electrode potential in an acidic electrolyte. The metal oxynitride electrode catalyst is useful as an electrode catalyst for electrochemical systems used in acidic electrolytes in the fields of water electrolysis, organic electrolysis, fuel cells, etc.