Experimental study demonstrates power density gains of up to 70% in pressurized solid oxide fuel cells operated with reformate fuels, indicating high-pressure operation boosts system efficiency.
In this contribution the influence of pressure on an SOFC is studied with steam-reformed methane as a fuel. Experiments were performed with a reformate containing 58.4% H2, 20% H2O, 12.2% CO, 5.5% CO 2 and 3.9% CH4 and another mixture containing 18% H 2, 34% H2O, 2% CO, 27% CO2 and 19% CH 4 as well as a hydrogen/nitrogen mixture. The influence of pressure on OCV, power density at constant voltage and constant current as well as on gas composition was examined for the different fuels. Power density increases of up to 70% were found.
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Willich et al. (2012) studied this question.
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