The effect of coal syngas containing AsH3 on the performance of SOFCs: Investigations into the effect of operational temperature, current density and AsH3 concentration

Trembly, J., Gemmen, RS., & Bayless, DJ. (2007). The effect of coal syngas containing AsH3 on the performance of SOFCs: Investigations into the effect of operational temperature, current density and AsH3 concentration. Journal of Power Sources, 171(2), 818-825. https://doi.org/10.1016/j.jpowsour.2007.06.087

Abstract

The performance of solid oxide fuel cells (SOFCs) using simulated coal-derived syngas, with and without arsine (AsH3), was studied. Anode-supported SOFCs were tested galvanostatically at 0.25 and 0.5 A cm(-2) at 750 and 800 degrees C with simulated coal syngas containing 0.1, 1, and 2 ppm AsH3. The tests with simulated coal syngas containing 1 ppm AsH3 show little degradation over 100 h of operation. The tests with simulated coal syngas containing 2 ppm AsH3 show some signs of degradation, however no secondary arsenide phases were found. Extended trial testing with 0.1 ppm AsH3 showed degradation as well as the formation of a secondary nickel arsenide phase in the anode of the SOFC. Published by Elsevier B.V

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