Tungsten based electrocatalyst for fuel cell applications

被引：63

作者：

Christian, Joel B.

Smith, Sean P. E.

Whittingham, M. Stanley

Abruna, Hector D. ^{[1
]}

机构：

[1] Cornell Univ, Dept Chem & Biol Chem, Ithaca, NY 14653 USA

[2] SUNY Binghamton, Binghamton, NY 13902 USA

[3] OSRAM SYLVANIA Inc, Global Tungsten & Powders R&D, Towanda, PA 18848 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 08期

关键词：

electrocatalyst; fuel cells; polyoxometalates; POM; isopoly; tungsten oxide; eletrochemical synthesis;

D O I：

10.1016/j.elecom.2007.06.001

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A barrier to the widespread use of fuel cells is their reliance on expensive and scarce platinum and other precious metal catalysts. We present a catalyst for hydrogen oxidation, prepared electrochemically from high-purity aqueous tungstate salt precursors. The 24-electron reduction of ammonium metatungstate ((NH4)(6)[H2W12O40]) yields a material with electrocatalytic activity towards the oxidation of hydrogen in acid electrolyte which approaches 25% that of platinum. Moreover, the tungstate catalyst is unusually tolerant to CO and H2S contaminants in the fuel stream. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：2128 / 2132

页数：5

共 23 条

[1] Surface electronic structure-catalytic activity relationship of partially reduced WO3 bulk or deposited on TiO2 [J].