Ag3PO4 electrocatalyst for oxygen reduction reaction: enhancement from positive charge

被引：6

作者：

Qin, Yong ^{[1
]}

Li, Fan ^{[1
]}

Tu, Peng ^{[2
]}

Ma, Yanling ^{[1
]}

Chen, Wenlong ^{[1
]}

Shi, Fenglei ^{[1
]}

Xiang, Qian ^{[1
]}

Shan, Hao ^{[1
]}

Zhang, Lifu ^{[1
]}

Tao, Peng ^{[1
]}

Song, Chengyi ^{[1
]}

Shang, Wen ^{[1
]}

Deng, Tao ^{[1
]}

Zhu, Hong ^{[1
,2
,3
]}

Wu, Jianbo ^{[1
,3
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Univ Michigan Shanghai Jiao Tong Univ Joint Inst, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

[3] Shanghai Jiao Tong Univ, Mat Genome Initiat Ctr, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

来源：

RSC ADVANCES | 2018年 / 8卷 / 10期

基金：

美国国家科学基金会;

关键词：

FUEL-CELLS; ELECTRON-MICROSCOPY; EPITAXIAL-GROWTH; CARBON NANOTUBES; IN-SITU; CATALYSTS; NANOPARTICLES; NANOCRYSTALS; GRAPHENE; PD;

D O I：

10.1039/c7ra12643c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 developing low-cost and highly active non-Pt catalytic materials from a broader range of material systems.

引用

页码：5382 / 5387

页数：6

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