The effect of synthesis gas composition on the performance of Ni-based solid oxide fuel cells

Matthew Drewery, Eric Kennedy, Feraih Alenazey, Bogdan Dlugogorski, Michael Stockenhuber

Research output: Contribution to journalArticle

Abstract

An increased interest in using hydrocarbons in solid oxide fuel cells for the production of power has led to research into operation on synthesis (syn) gas, a mixture of hydrogen and carbon monoxide. Hydrocarbons are typically reformed, either internally or in an external reformer prior to the fuel cell, producing syngas with various H2:CO ratios depending on the hydrocarbon used. This paper examines the effect of varying the H2:CO ratio with respect to C1 to C4 steam reforming reactions and additionally a mixture containing a higher ratio of carbon monoxide. It was found that there was no significant relationship between cell performance and H2:CO ratio when a high feed rate was employed. For low flow rates, however, the high carbon monoxide concentration resulted in a significant decrease in cell performance. It was determined that this was caused by reversible carbon deposition as opposed to a decrease in carbon monoxide reactivity.

Original languageEnglish
Pages (from-to)22-26
Number of pages5
JournalChemical Engineering Research and Design
Volume101
Issue numberSeptember
Early online date17 Jul 2015
DOIs
Publication statusPublished - 1 Sep 2015
Externally publishedYes

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