Catalytic and electrochemical behaviour of solid oxide fuel cell operated with simulated-biogas mixtures

T. Dang-Long, T. Quang-Tuyen, Yusuke Shiratori

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

4 被引用数 (Scopus)

抄録

Being produced from organic matters of wastes (bio-wastes) through a fermentation process, biogas mainly composed of CH4 and CO2 and can be considered as a secondary energy carrier derived from solar energy. To generate electricity from biogas through the electrochemical process in fuel cells is a state-of-the-art technology possessing higher energy conversion efficiency without harmful emissions compared to combustion process in heat engines. Getting benefits from high operating temperature such as direct internal reforming ability and activation of electrochemical reactions to increase overall system efficiency, solid oxide fuel cell (SOFC) system operated with biogas becomes a promising candidate for distributed power generator for rural applications leading to reductions of environmental issues caused by greenhouse effects and bio-wastes. CO2 reforming of CH4 and electrochemical oxidation of the produced syngas (H2-CO mixture) are two main reaction processes within porous anode material of SOFC. Here catalytic and electrochemical behavior of Ni-ScSZ (scandia stabilized-zirconia) anode in the feed of CH4-CO2 mixtures as simulated-biogas at 800 °C were evaluated. The results showed that CO2 had strong influences on both reaction processes. The increase in CO2 partial pressure resulted in the decrease in anode overvoltage, although open-circuit voltage was dropped. Besides that, the simulation result based on a power-law model for equimolar CH4-CO2 mixture revealed that coking hazard could be suppressed along the fuel flow channel in both open-circuit and closed-circuit conditions.

本文言語英語
ホスト出版物のタイトルProceedings of the 3rd AUN/SEED-NET Regional Conference on Energy Engineering and the 7th International Conference on Thermofluids, RCEnE/THERMOFLUID 2015
出版社American Institute of Physics Inc.
1737
ISBN(電子版)9780735413917
DOI
出版ステータス出版済み - 6 3 2016
イベント3rd AUN/SEED-NET Regional Conference on Energy Engineering and the 7th International Conference on Thermofluids, RCEnE/THERMOFLUID 2015 - Yogyakarta, インドネシア
継続期間: 11 19 201511 20 2015

その他

その他3rd AUN/SEED-NET Regional Conference on Energy Engineering and the 7th International Conference on Thermofluids, RCEnE/THERMOFLUID 2015
Countryインドネシア
CityYogyakarta
Period11/19/1511/20/15

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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