Comparison of the Sulfur Poisoning of PBI and Nafion PEMFC Cathodes

被引：29
|
作者：
Garsany, Yannick [1 ]
Gould, Benjamin D. [1 ]
Baturina, Olga A. [1 ]
Swider-Lyons, Karen E. [1 ]
机构：
[1] USN, Res Lab, Washington, DC 20375 USA
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2009年 / 12卷 / 09期
关键词：
hydrogen compounds; polymers; proton exchange membrane fuel cells; sulphur compounds; HIGH-TEMPERATURE OPERATION; MEMBRANE FUEL-CELLS; PERFORMANCE; ACID; SO2;
D O I：
10.1149/1.3168516
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The poisoning effect of H(2)S and SO(2) in air is compared for phosphoric-acid-doped polybenzimidazole (PBI) membrane and perfluorosulfonic acid (Nafion) proton exchange membrane fuel cells (PEMFCs). The cathodes of PBI PEMFCs are about 70 times more resistant to 1 ppm of H(2)S or SO(2) than the Nafion PEMFCs. The PBI PEMFCs only lose < 2% in cell performance when exposed to 1 ppm of H(2)S or SO(2) and have 5.2 and 7.1% losses with 5 and 10 ppm H(2)S over 24 h, respectively. Purging the poisoned PBI cells with neat air leads to complete performance recovery.
引用
收藏
页码：B138 / B140
页数：3
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