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Experimental and modeling study of high performance direct carbon solid oxide fuel cell with in situ catalytic steam-carbon gasification reaction

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Author(s)

Haoran Xu, Bin Chen, Houcheng Zhang, Peng Tan, Guangming Yang, John T.S. Irvine, Meng Ni

School/Research organisations

Abstract

In this paper, 2D models for direct carbon solid oxide fuel cells (DC-SOFCs) with in situ catalytic steam-carbon gasification reaction are developed. The simulation results are found to be in good agreement with experimental data. The performance of DC-SOFCs with and without catalyst are compared at different operating potential, anode inlet gas flow rate and operating temperature. It is found that adding suitable catalyst can significantly speed up the in situ steam-carbon gasification reaction and improve the performance of DC-SOFC with H2O as gasification agent. The potential of syngas and electricity co-generation from the fuel cell is also evaluated, where the composition of H2 and CO in syngas can be adjusted by controlling the anode inlet gas flow rate. In addition, the performance DC-SOFCs and the percentage of fuel in the outlet gas are both increased with increasing operating temperature. At a reduced temperature (below 800 °C), good performance of DC-SOFC can still be obtained with in-situ catalytic carbon gasification by steam. The results of this study form a solid foundation to understand the important effect of catalyst and related operating conditions on H2O-assisted DC-SOFCs.
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Details

Original languageEnglish
Pages (from-to)135-143
Number of pages9
JournalJournal of Power Sources
Volume382
Early online date22 Feb 2018
DOIs
Publication statusPublished - 1 Apr 2018

    Research areas

  • Fuel cell, Carbon gasification, Syngas generation

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