公开(公告)号：US12062796B2

公开(公告)日：2024-08-13

申请号：US18268899

申请日：2021-12-13

申请人： TANAKA KIKINZOKU KOGYO K.K. ,  NATIONAL INSTITUTE OF TECHNOLOGY

发明人： Minoru Ishida ,  Koichi Matsutani ,  Hiroshi Nakanishi ,  Hideaki Kasai ,  Bhume Chantaramolee ,  Susan Menez Aspera

IPC分类号： H01M4/92 ,  H01M8/10 ,  H01M8/1018

CPC分类号： H01M4/921 ,  H01M4/926 ,  H01M8/1018 ,  H01M2008/1095

摘要： 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.

公开(公告)号：US11527761B2

公开(公告)日：2022-12-13

申请号：US16441855

申请日：2019-06-14

申请人： TANAKA KIKINZOKU KOGYO K.K. ,  OSAKA UNIVERSITY

发明人： Koichi Matsutani ,  Takeshi Kaieda ,  Yasushi Masahiro ,  Hideaki Kasai ,  Hiroshi Nakanishi ,  Koji Shimizu

IPC分类号： H01M4/86 ,  B01J23/50 ,  B01J35/00 ,  H01M4/92 ,  B01J23/42 ,  H01M4/90

摘要： Provided are (i) a catalyst that has a core-shell structure and is highly active in an oxygen reduction reaction, which is a cathode reaction of a fuel cell, and (ii) a reaction acceleration method in which the catalyst is used. A core-shell catalyst for accelerating an oxygen reduction reaction, contains: silver or palladium as a core material; and platinum as a shell material, the core-shell catalyst having, on a surface thereof, a (110) surface of a face centered cubic lattice.