Development of tellurium-modified carbon catalysts for oxygen reduction reaction in PEM fuel cells

被引：21

作者：

Li, Xuguang ^{[1
]}

Liu, Lingyun ^{[1
]}

Lee, Jong-Won ^{[1
]}

Popov, Branko N. ^{[1
]}

机构：

[1] Univ S Carolina, Dept Chem Engn, Ctr Electrochem Engn, Columbia, SC 29208 USA

来源：

JOURNAL OF POWER SOURCES | 2008年 / 182卷 / 01期

关键词：

tellurium; carbon catalyst; oxygen reduction; polymer electrolyte membrane fuel cell;

D O I：

10.1016/j.jpowsour.2008.04.017

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：

Tellurium (Te)-modified carbon catalyst for oxygen reduction reaction was prepared through chemical reduction of telluric acid followed by the pyrolysis process at elevated temperatures. The catalyst was found to be active for oxygen reduction reaction. High-temperature pyrolysis plays a crucial role in the formation of the active sites of the catalysts. When the pyrolysis was conducted at 1000 degrees C, the catalyst exhibited the onset potential for oxygen reduction as high as 0.78 V vs. NHE and generated less than 1% H2O2 during oxygen reduction.The performance of the membrane-electrode assembly prepared with the Te-modified carbon catalyst was also evaluated. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：18 / 23

页数：6

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