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:
Jun. 23, 2020
Filed:
Jan. 30, 2015
National University Corporation Hokkaido University, Sapporo-shi, Hokkaido, JP;
Hitachi Zosen Corporation, Osaka-shi, JP;
Etsushi Tsuji, Sapporo, JP;
Teruki Motohashi, Sapporo, JP;
Hiroki Habazaki, Sapporo, JP;
Hiroyuki Noda, Sapporo, JP;
Tatsuya Takeguchi, Sapporo, JP;
Abstract
A novel transition metal oxide catalyst that is equivalent to precious metal catalysts, and an air electrode and an air secondary battery using this catalyst are provided. The catalyst is a catalyst for an air electrode including a brownmillerite-type transition metal oxide and represented by General Formula (1) below:ABBO  (1)where A represents Ca, Sr, Ba, or a rare earth element(RE), Bis a metal atom that forms a tetrahedral structure together with oxygen atoms, and Bis a metal atom that forms an octahedral structure together with oxygen atoms. Disclosed are an air electrode for a metal-air secondary battery that includes the catalyst, and a metal-air secondary battery that includes an air electrode including the catalyst, a negative electrode including a negative electrode active material, and an electrolyte intervening between the air electrode and the negative electrode.