Propane fuel cells using phosphoric-acid-doped polybenzimidazole membranes

被引：25

作者：

Cheng, CK ^{[1
]}

Luo, JL ^{[1
]}

Chuang, KT ^{[1
]}

Sanger, AR ^{[1
]}

机构：

[1] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2005年 / 109卷 / 26期

关键词：

D O I：

10.1021/jp044107a

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：

Propane fuel cells using H3PO4-doped polybenzimidazole polymer membranes produce low and unsustainable current densities at temperatures up to 250 degrees C under anhydrous conditions. Stable intermediate species blocked the surface of noble metal anode catalysts, and the intermediate species could not react further into desorbable final products. In contrast, when water was introduced by light humidification (S-r 0.08%) of the propane stream, sustainable and higher current densities were achieved. Water participated in the reaction sequence to form surface-bound hydrocarbon and then oxygen-containing intermediates and thereby generated CO and CO2 as the only carbon-containing products.

引用

页码：13036 / 13042

页数：7

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