Effect of pressure variation on power density and efficiency of solid oxide fuel cells

Autor:	Robert Leibinger, Florian Leucht, Christina Westner, Josef Kallo, Caroline Willich, K. Andreas Friedrich, Moritz Henke
Rok vydání:	2012
Předmět:	Steady state Chemistry General Chemical Engineering Oxide Analytical chemistry Efficiency Power density Anode chemistry.chemical_compound Planar Solid oxide fuel cell Range (aeronautics) Pressure Electrochemistry Pressurised SOFC SOFC Constant (mathematics)
Zdroj:	Electrochimica Acta. 66:158-163
ISSN:	0013-4686
Popis:	This paper describes the effect of enhanced operating pressure on power density and efficiency of SOFC. Experiments were carried out with planar anode-supported cells which were operated at 1073 K with an anode gas mixture of 30% H 2 and 70% N 2 . Pressure was varied between 1.35 and 8 bar. Points of polarisation curves were measured at steady state with fuel utilisation varying from 30 to 50%. Power density and efficiency of the fuel cell were analysed at different operating points. Results show that power density can be increased significantly (an increase up to 100% was measured) at constant efficiency. An increase in efficiency in the range of 10% is achievable if power density is kept constant. For all operating conditions, pressure effects show logarithmic behaviour.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a54d24b8d05bc3056347507c10b9748 https://doi.org/10.1016/j.electacta.2012.01.075 Zobrazit plný text záznamu Full Text from ScienceDirect