公开(公告)号：US11658310B2

公开(公告)日：2023-05-23

申请号：US17638188

申请日：2021-07-06

Applicant: JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Xingmei Guo ,  Junhao Zhang ,  Wei Zhang ,  Xiaohan Wan

IPC: H01M4/90 ,  H01M4/88 ,  H01M12/08 ,  H01M4/86

CPC classification number: H01M4/9083 ,  H01M4/8817 ,  H01M4/8846 ,  H01M4/9016 ,  H01M12/08 ,  H01M2004/8689

Abstract: A high-performance positive electrode catalyst for a metal-air battery is disclosed, which is composed of transition metal nitride-transition metal oxide heterogeneous particles and a mesoporous carbon matrix. The nano heterogeneous particles, which are 10-50% based on the total mass of the catalyst, are dispersed in the mesoporous carbon matrix; and the oxide is 10-100% based on the heterogeneous particles. A preparation method of the catalyst includes: treating mesoporous carbon with a strong acid solution to obtain surface-functionalized mesoporous carbon; immersing the surface-functionalized mesoporous carbon in an aqueous solution of a transition metal salt, and stirring and washing; adding ammonia water and stirring to enable a confined complexation reaction; washing again, and vacuum drying; and calcining the product in an inert atmosphere or a vacuum condition.