Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5580
Title: The effect of electrolyte type on performance of solid oxide fuel cells running on hydrocarbon fuels
Authors: Ni, M 
Keywords: Protonic ceramics
Solid oxide fuel cell
Hydrocarbon fuels
Electrochemical oxidation
Electrolyte
Internal reforming
Issue Date: 27-Feb-2013
Publisher: Pergamon Press
Source: International journal of hydrogen energy, 27 Feb. 2013, v. 38, no. 6, p. 2846-2858 How to cite?
Journal: International journal of hydrogen energy 
Abstract: A two-dimensional model is developed to simulate the performance of methane fueled solid oxide fuel cells (SOFCs), focusing on the effect of electrolyte type on SOFC performance. The model considers the heat and mass transfer, direct internal reforming (DIR) reaction, water gas shift reaction (WGSR), and electrochemical reactions in SOFCs. The electrochemical oxidation of CO in oxygen ion-conducting SOFC (O-SOFC) is considered. The present study reveals that the performance of H-SOFC is lower than that of O-SOFC at a high temperature or at a low operating potential, as electrochemical oxidation of CO in O-SOFC contributes to power generation. This finding is contrary to our common understanding that proton conducting SOFC (H-SOFC) always performs better than O-SOFC. However, at a high operating potential of 0.8 V or at a lower temperature, H-SOFC does exhibit better performance than O-SOFC due to its higher Nernst potential and higher ionic conductivity of the electrolyte. This indicates that the proton conductors can be good choices for SOFCs at intermediate temperature, even with hydrocarbons fuels. The results provide better understanding on how the electrolyte type influences the performance of SOFCs running on hydrocarbon fuels.
URI: http://hdl.handle.net/10397/5580
ISSN: 0360-3199
EISSN: 1879-3487
DOI: 10.1016/j.ijhydene.2012.12.055
Rights: Copyright © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Reproduced with permission of the publisher.
Appears in Collections:Journal/Magazine Article

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