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:
Aug. 13, 2024
Filed:
Dec. 13, 2021
Tanaka Kikinzoku Kogyo K.k., Tokyo, JP;
National Institute of Technology, Hachioji, JP;
Minoru Ishida, Hiratsuka, JP;
Koichi Matsutani, Hiratsuka, JP;
Hiroshi Nakanishi, Akashi, JP;
Hideaki Kasai, Akashi, JP;
Bhume Chantaramolee, Akashi, JP;
Susan Menez Aspera, Akashi, JP;
TANAKA KIKINZOKU KOGYO K.K., Tokyo, JP;
NATIONAL INSTITUTE OF TECHNOLOGY, Hachioji, JP;
Abstract
A catalyst for an oxygen reduction reaction containing catalyst particles having a shell-core structure containing a PtCo alloy or a PtCoMn alloy as a core, and platinum as a shell layer. A specific plane of a face-centered cubic lattice is formed by a plurality of platinum atoms contained in the shell layer, and a lattice constant of the plane of the face-centered cubic lattice on the catalyst particle surface is 3.70 Å or more and 4.05 Å or less (in a PtCo alloy), or 3.870 Å or more and 4.10 Å or less (in a PtCoMn alloy). A catalyst design method includes a step of calculating, with respect to an orientation plane such as the plane formed by platinum atoms of the shell layer, adsorption energies for an oxygen molecule, an OH group and a water molecule by first-principles calculation based on density functional theory.