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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