Ag₃PO₄ electrocatalyst for oxygen reduction reaction: enhancement from positive charge.

ABSTRACT: We have demonstrated Ag₃PO₄ as an active non-Pt electrocatalyst with enhanced activity compared with Ag for oxygen reduction reaction (ORR). Density functional theory reveals that better ORR performance of Ag atoms on Ag₃PO₄ surface than that on pure silver surface originates from more appropriate oxygen adsorption on positively charged Ag atoms. Further study of the surface geometry of Ag₃PO₄ including tetrahedron, rhombic dodecahedron and cube indicates that the highest density of Ag and appropriate oxygen adsorption on {110} surface of rhombic dodecahedral Ag₃PO₄ lead to the highest ORR activity, which is about 12 times that of Pt catalysts from a commercial perspective. It may be applicable for deve

SUBMITTER: Qin Y 

PROVIDER: S-EPMC9078130 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature