Journal
JOURNAL OF POWER SOURCES
Volume 152, Issue 1, Pages 175-181Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2005.03.174
Keywords
Butler-Volmer; activation; polarization; overpotential; solid oxide fuel cell
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This paper shows the importance of including the activation losses in a model designed to accurately predict the voltage-current relationship of a modem solid oxide fuel cell. The governing equation for voltage drop due to activation losses, the Butler-Volmer equation, is discussed and the derivation and applicability of several approximations is investigated. Finally, the assumptions required to combine the separate anode and cathode activation loss calculations into a single-term equation are claritied. (c) 2005 Elsevier B.V. All rights reserved.
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