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Energies 2014, 7(7), 4381-4396; doi:10.3390/en7074381

Modeling of Proton-Conducting Solid Oxide Fuel Cells Fueled with Syngas

1
Department of Building and Real Estate, the Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
2
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry & Chemical Engineering, Nanjing University of Technology, No. 5 Xin Mofan Road, Nanjing 210009, China
3
Department of Chemistry, the University of Hong Kong, Pokfulam Road, Hong Kong, China
*
Author to whom correspondence should be addressed.
Received: 25 April 2014 / Revised: 27 June 2014 / Accepted: 3 July 2014 / Published: 9 July 2014
(This article belongs to the Special Issue Reacting Transport Phenomena in Solid Oxide Fuel Cells)
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Abstract

Solid oxide fuel cells (SOFCs) with proton conducting electrolyte (H-SOFCs) are promising power sources for stationary applications. Compared with other types of fuel cells, one distinct feature of SOFC is their fuel flexibility. In this study, a 2D model is developed to investigate the transport and reaction in an H-SOFC fueled with syngas, which can be produced from conventional natural gas or renewable biomass. The model fully considers the fluid flow, mass transfer, heat transfer and reactions in the H-SOFC. Parametric studies are conducted to examine the physical and chemical processes in H-SOFC with a focus on how the operating parameters affect the H-SOFC performance. It is found that the presence of CO dilutes the concentration of H2, thus decreasing the H-SOFC performance. With typical syngas fuel, adding H2O cannot enhance the performance of the H-SOFC, although water gas shift reaction can facilitate H2 production. View Full-Text
Keywords: proton-conducting solid oxide fuel cells; mathematical modeling; coupled transport and reaction; syngas; water gas shift reaction; computational fluid dynamics; electrochemistry proton-conducting solid oxide fuel cells; mathematical modeling; coupled transport and reaction; syngas; water gas shift reaction; computational fluid dynamics; electrochemistry
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Ni, M.; Shao, Z.; Chan, K.Y. Modeling of Proton-Conducting Solid Oxide Fuel Cells Fueled with Syngas. Energies 2014, 7, 4381-4396.

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