Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6442
Title: Electrolytic effect in solid oxide fuel cells running on steam/methane mixture
Authors: Ni, M 
Keywords: Solid oxide fuel cells
Internal reforming
Electrochemistry
Porous media
Natural gas
Electrolysis
Issue Date: 15-Feb-2011
Publisher: Elsevier
Source: Journal of power sources, 15 Feb. 2011, v. 196, no. 4, p. 2027-2036 How to cite?
Journal: Journal of power sources 
Abstract: A two-dimensional model is developed to study the performance of a planar solid oxide fuel cell (SOFC) running on steam/methane mixture. The model considers the heat/mass transfer, electrochemical reactions, direct internal reforming of methane (CH₄), and water gas shift reaction in an SOFC. It is found that at an operating potential of 0.8 V, the upstream and downstream of SOFC work in electrolysis and fuel cell modes, respectively. At the open-circuit voltage, the electricity generated by the downstream part of SOFC is completely consumed by the upstream through electrolysis, which is contrary to our common understanding that electrochemical reactions cease under the open-circuit conditions. In order to inhibit the electrolytic effect, the SOFC can be operated at a lower potential or use partially pre-reformed CH₄ as the fuel. Increasing the inlet gas velocity from 0.5 m s⁻¹ to 5.0 m s⁻¹ does not reduce the electrolytic effect but decreases the SOFC performance.
URI: http://hdl.handle.net/10397/6442
ISSN: 0378-7753
EISSN: 1873-2755
DOI: 10.1016/j.jpowsour.2010.09.069
Rights: © 2010 Elsevier B.V. All rights reserved.
NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Power Sources. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Power Sources, vol. 196, no. 4 (Feb 2011), DOI: 10.1016/j.jpowsour.2010.09.069
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Electrolytic_Effect_in_CH4_Fueled_SOFC.pdfPre-published version1.37 MBAdobe PDFView/Open
Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

6
Last Week
0
Last month
0
Citations as of Nov 6, 2017

WEB OF SCIENCETM
Citations

4
Last Week
0
Last month
0
Citations as of Nov 16, 2017

Page view(s)

111
Last Week
1
Last month
Checked on Nov 13, 2017

Download(s)

144
Checked on Nov 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.