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Multi-Scale, Multi-Physics Approach for Solid Oxide Fuel Cell Anode Reaction

Friday, 28 July 2017: 11:00
Atlantic Ballroom 1/2 (The Diplomat Beach Resort)
S. Liu, S. Liu, L. C. Saha (INAMORI Frontier Research Center, Kyushu University), A. M. Iskandarov (Tokyo Institute of Technology, Japan), Z. Jiao (Institute of Industrial Science, The University of Tokyo), S. Hara (Faculty of Engineering, Chiba Institute of Technology), T. Ishimoto (Hiroshima University), T. Tada (Tokyo Institute of Technology), Y. Umeno, N. Shikazono (Institute of Industrial Science, The University of Tokyo), S. Matsumura (The Ultramicroscopy Research Center, Kyushu University), and M. Koyama (INAMORI Frontier Research Center, Kyushu University, GREEN, National Institute for Materials Science)
Electrode processes in solid oxide fuel cells are intensively studied to increase the system efficiency to compete with that of the state-of-the-art LNG-fueled combined cycle thermal power plant. Because the electrode performance depends both on electrode materials and microstructure, we are obliged to breakdown the complexity of phenomena in the porous electrode into elementary processes by best utilizing both the advanced measurement and the simulation techniques. Closely examining the efforts in literature [1-7], we have taken the combined top-down and bottom-up approach.

The most difficult issue has lied on the meso-scale modeling, which typically is based on microkinetic modeling [5-8]. To guarantee the predictivity of the modeling, it is inevitable to realize the simulation without arbitrary fitting parameters that are not necessarily based on realistic physics. For this purpose, we first exhaustively summarized literature data followed by the careful examinations. Next, we have made exhaustive simulations assuming different combinations of parameters in literature.

Finally, we obtained a set of parameters that matches with experimental observations within reasonable differences.

The details together with the results of top-down and bottom up simulations will be introduced together with future perspectives.

Acknowledgements

The activities of INAMORI Frontier Research Center is supported by Kyocera Co. Ltd. The activities of Advanced Automotive Research Collaborative Laboratory in Hiroshima University are supported by Mazda Corporation. The part of the research is supported by CREST, Japan Science and Technology Agency.

References

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[2] W. Yao and E. Croiset, Can. J. Chem. Eng., 93, 2157 (2015)

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[4] A. Utz, H. Störmer, A. Leonide, A. Weber, E. Ivers-Tiffée, J. Electrochem. Soc., 157 B920 (2010)

[5] W. G. Bessler, S. Gewies, M. Vogler, Electrochim. Acta, 53, 1782 (2007)

[6] W. G. Bessler, Solid State Ionics, 176, 997 (2005)

[7] M. Vogler, A. Bieberle-Hütter, L. Gauckler, J. Warnatz, and W. G. Bessler, J.

Electrochem. Soc., 156, B663 (2009)

[8] H. Kohno, S. Liu, T. Ogura, T. Ishimoto, D. S. Monder, K. Karan, M. Koyama, ECS Trans., 57(1), 2821 (2013)

See more of: Modeling II
See more of: I01: Fifteenth International Symposium on Solid Oxide Fuel Cells
See more of: Fuel Cells, Electrolyzers, and Energy Conversion
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