Synthesis of high dispersed intermetallic Ag4Sn/C and its enhanced oxygen reduction reaction activity

被引：28

作者：

Lu, Yuanjun ^{[1
]}

Zhang, Nanlin ^{[2
]}

An, Li ^{[2
]}

Li, Xiang ^{[1
]}

Xia, Dingguo ^{[2
]}

机构：

[1] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100124, Peoples R China

[2] Peking Univ, Coll Engn, Key Lab Theory & Technol Adv Battery Mat, Beijing 100871, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2013年 / 240卷

基金：

中国国家自然科学基金;

关键词：

Intermetallic catalyst; Silver-tin material; Alkaline fuel cell; Oxygen reduction reaction; ALKALINE MEDIA; FUEL-CELLS; AG NANOPARTICLES; CATALYSTS; ELECTROCATALYSTS; SILVER; ELECTROREDUCTION; PERFORMANCE; AU; POLYANILINE;

D O I：

10.1016/j.jpowsour.2013.05.015

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ag4Sn/C catalyst is synthesized by a solution phase reduction method assisted with ultrasonic at 0 degrees C. The as-prepared catalyst is characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and electrochemical measurements. The Ag4Sn intermetallic electrocatalyst displays enhanced electrocatalytic activity towards oxygen reduction reaction (ORR) and good methanol-tolerant property in alkaline media. The ORR catalyzed by Ag4Sn/C proceeds a four-electron pathway. The obtained results are important for the development of Ag-based catalysts in alkaline fuel cells. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：606 / 611

页数：6

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