Propane fuel cells using phosphoric-acid-doped polybenzimidazole membranes

Chin Kui Cheng, Jing Li Luo, Karl T. Chuang, Alan R. Sanger

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Propane fuel cells using H3PO4-doped polybenzimidazole polymer membranes produce low and unsustainable current densities at temperatures up to 250°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 (Sr 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.

Original languageBritish English
Pages (from-to)13036-13042
Number of pages7
JournalJournal of Physical Chemistry B
Volume109
Issue number26
DOIs
StatePublished - 7 Jul 2005

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