Experimental characterization and elementary reaction modeling of solid oxide electrolyte direct carbon fuel cell
Name
Xiankai Yu et al,Experimental Characterization and Elementary Reaction Modeling of Solid Oxide Electrolyte Direct Carbon Fuel Cell.pdf
Size
650.8 KB
Format
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Checksum (MD5)
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Author(s)
Yu, Xiankai
Shi, Yixiang
Wang, Hongjian
Cai, Ningsheng
Li, Chen
Tomov, Rumen I.
Glowacki, Bartek A.
Hanna, Jeffrey
Ghoniem, Ahmed F
Date Issued
June 2013
Journal
Journal of Power Sources
Publisher
Elsevier
Citation
Yu, Xiankai, Yixiang Shi, Hongjian Wang, Ningsheng Cai, Chen Li, Rumen I. Tomov, Jeffrey Hanna, Bartek A. Glowacki, and Ahmed F. Ghoniem. “Experimental Characterization and Elementary Reaction Modeling of Solid Oxide Electrolyte Direct Carbon Fuel Cell.” Journal of Power Sources 243 (December 2013): 159–171.
Version
Author's final manuscript
Abstract
A detailed mechanistic model for solid oxide electrolyte direct carbon fuel cell (SO-DCFC) is developed while considering the thermo-chemical and electrochemical elementary reactions in both the carbon bed and the SOFC, as well as the meso-scale transport processes within the carbon bed and the SOFC electrode porous structures. The model is validated using data from a fixed bed carbon gasification experiment and the SO-DCFC performance testing experiments carried out using different carrier gases and at various temperatures. The analyzes of the experimental and modeling results indicate the strong influence of the carrier gas on the cell performance. The coupling between carbon gasification and electrochemical oxidation on the SO-DCFC performance that results in an unusual transition zone in the cell polarization curve was predicted by the model, and analyzed in detail at the elementary reaction level. We conclude that the carbon bed physical properties such as the bed height, char conversion ratio and fuel utilization, as well as the temperature significantly limit the performance of the SO-DCFC.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1016/j.jpowsour.2013.05.149
