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Modeling of Proton-Conducting Solid Oxide Fuel Cells Fueled with Syngas
Energies 2014, 7(7), 4601-4613; doi:10.3390/en7074601
Article

Electrical Performance and Carbon Deposition Differences between the Bi-Layer Interconnector and Conventional Straight Interconnector Solid Oxide Fuel Cell

1
, 1
, 2
, 1
, 1,*  and 3
1 Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China 2 Nuclear Safety Technology Research Center, Suzhou Nuclear Power Institute, Xihuan Road 1788#, Suzhou 215004, Jiangsu, China 3 Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24060, USA
* Author to whom correspondence should be addressed.
Received: 20 May 2014 / Revised: 7 July 2014 / Accepted: 16 July 2014 / Published: 22 July 2014
(This article belongs to the Special Issue Reacting Transport Phenomena in Solid Oxide Fuel Cells)
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Abstract

Carbon deposition considered in a solid oxide fuel cell (SOFC) model may be influenced by the operating voltage, inlet water/methane ratio, working temperature and pressure, inlet molar fraction of fuel and so on. The effects of these parameters in a planar SOFC implementing a novel bi-layer interconnector are not well understood. This paper is focused on the numerical study of carbon deposition and electrical performance of a bi-layer interconnector planar SOFC. The results illustrate that the electrical performance of the bi-layer interconnector SOFC is 11% higher than that of the conventional straight interconnector SOFC with initial state. After 120 days of operation, the electrical performance of the bi-layer interconnector SOFC has a slight decrease and more carbon deposit because of the increased electrochemical reaction rate. However, these differences minimize if higher operating voltages are involved.
Keywords: planar SOFC; bi-layer interconnector; electrical performance; carbon deposition; conventional SOFC planar SOFC; bi-layer interconnector; electrical performance; carbon deposition; conventional SOFC
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Yan, M.; Fu, P.; Chen, Q.; Wang, Q.; Zeng, M.; Pandit, J. Electrical Performance and Carbon Deposition Differences between the Bi-Layer Interconnector and Conventional Straight Interconnector Solid Oxide Fuel Cell. Energies 2014, 7, 4601-4613.

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