Comparison of the Sulfur Poisoning of PBI and Nafion PEMFC Cathodes
Comparison of the Sulfur Poisoning of PBI and Nafion PEMFC Cathodes
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DOI：
10.1149/1.3168516
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发表时间：
2009-09
影响因子：
--
通讯作者：
Y. Garsany;Benjamin D. Gould;O. Baturina;K. Swider-Lyons
中科院分区：
文献类型：
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作者：
Y. Garsany;Benjamin D. Gould;O. Baturina;K. Swider-Lyons
比较了磷酸掺杂聚苯并咪唑（PBI）膜和全氟磺酸（Nafion）质子交换膜燃料电池（PEMFC）中H2S和SO2的中毒效应。PBI质子交换膜燃料电池的阴极对1ppm的H2S或SO2的耐受性比Nafion质子交换膜燃料电池高约70倍。当暴露于1ppm的H2S或SO2时，PBI PEMFC的电池性能仅损失<2%，而在5和10ppm的H2S下，在24 h内分别损失5.2%和7.1%。用纯净空气吹扫中毒的PBI电池导致完全的性能恢复。
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 S0 2 than the Nafion PEMFCs. The PBI PEMFCs only lose <2% in cell performance when exposed to 1 ppm of H 2 S or S0 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.