The oxygen reduction reaction on Pt/TiOxNy-based electrocatalyst for PEM fuel cell applications

被引：22

作者：

Wang, Wanli ^{[1
,2
]}

Savadogo, Oumarou ^{[1
]}

Ma, Zi-Feng ^{[2
]}

机构：

[1] Ecole Polytech Montreal, Dept Chem Engn, Lab New Mat Electrochem & Energy, Montreal, PQ H3C 3A7, Canada

[2] Shanghai Jiao Tong Univ, Dept Chem Engn, Inst Electrochem & Energy Technol, Shanghai 200240, Peoples R China

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2012年 / 42卷 / 10期

基金：

中国国家自然科学基金;

关键词：

New Pt electrocatalyst support; Titanium oxy-nitride; Electrocatalyst and support interaction; Oxygen reduction reaction (ORR); PEM fuel cell; High stability; TITANIUM OXYNITRIDE FILMS; SOL-GEL METHOD; N-DOPED TIO2; SILICOTUNGSTIC ACID; SULFATED-ZIRCONIA; HIGH-PERFORMANCE; THIN-FILMS; CATALYST; PLATINUM; CARBON;

D O I：

10.1007/s10800-012-0452-y

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Titanium oxy-nitride was developed for the first time as Pt electrocatalyst support for the ORR in PEM fuel applications. The conditions of the support preparation and the Pt/TiOxNy-based electrodes' elaboration by chemical reduction method were determined. Comparison of the polarization curves of the carbon and the TiOxNy supported how clearly TiOxNy was more stable than the Vulcan XC-72R. It was found that the 40 wt% Pt/TiOxNy-based electrocatalyst is active for the ORR in acid medium, but the activity was less than that of Pt/C. The normalized electrochemical surface area degradation of Pt/TiOxNy was significantly less than that of Pt/C. The kinetics of the ORR on Pt/TiOxNy proceeded through a four-electron transfer process. The single-cell hydrogen/oxygen PEM fuel cell performances based on Pt/TiOxNy cathode electrocatalyst exhibited the same range of characteristics as those based on Pt/C.

引用

页码：857 / 866

页数：10

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