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A Simple Expression for the Tortuosity of Gas Transport Paths in Solid Oxide Fuel Cells’ Porous Electrodes

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  • Wei Kong

    (School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
    These authors contributed equally to this work.)

  • Qiang Zhang

    (School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
    These authors contributed equally to this work.)

  • Xiuwen Xu

    (School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
    These authors contributed equally to this work.)

  • Daifen Chen

    (School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
    These authors contributed equally to this work.)

Abstract

Based on the three-dimensional (3D) cube packing model, a simple expression for the tortuosity of gas transport paths in solid oxide fuel cells’ (SOFC) porous electrodes is developed. The proposed tortuosity expression reveals the dependence of the tortuosity on porosity, which is capable of providing results that are very consistent with the experimental data in the practical porosity range of SOFC. Furthermore, for the high porosity (>0.6), the proposed tortuosity expression is also accurate. This might be helpful for understanding the physical mechanism for the tortuosity of gas transport paths in electrodes and the optimization electrode microstructure for reducing the concentration polarization.

Suggested Citation

  • Wei Kong & Qiang Zhang & Xiuwen Xu & Daifen Chen, 2015. "A Simple Expression for the Tortuosity of Gas Transport Paths in Solid Oxide Fuel Cells’ Porous Electrodes," Energies, MDPI, vol. 8(12), pages 1-7, December.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:12:p:12406-13959:d:60268
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    References listed on IDEAS

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    1. Zhonggang Zhang & Jingfeng Chen & Danting Yue & Guogang Yang & Shuang Ye & Changrong He & Weiguo Wang & Jinliang Yuan & Naibao Huang, 2013. "Three-Dimensional CFD Modeling of Transport Phenomena in a Cross-Flow Anode-Supported Planar SOFC," Energies, MDPI, vol. 7(1), pages 1-19, December.
    2. Wei Kong & Xiang Gao & Shixue Liu & Shichuan Su & Daifen Chen, 2014. "Optimization of the Interconnect Ribs for a Cathode-Supported Solid Oxide Fuel Cell," Energies, MDPI, vol. 7(1), pages 1-19, January.
    3. Andersson, Martin & Yuan, Jinliang & Sundén, Bengt, 2010. "Review on modeling development for multiscale chemical reactions coupled transport phenomena in solid oxide fuel cells," Applied Energy, Elsevier, vol. 87(5), pages 1461-1476, May.
    4. Min Yan & Pei Fu & Qiuyang Chen & Qiuwang Wang & Min Zeng & Jaideep Pandit, 2014. "Electrical Performance and Carbon Deposition Differences between the Bi-Layer Interconnector and Conventional Straight Interconnector Solid Oxide Fuel Cell," Energies, MDPI, vol. 7(7), pages 1-13, July.
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    Cited by:

    1. Daifen Chen & Biao Hu & Kai Ding & Cheng Yan & Liu Lu, 2018. "The Geometry Effect of Cathode/Anode Areas Ratio on Electrochemical Performance of Button Fuel Cell Using Mixed Conducting Materials," Energies, MDPI, vol. 11(7), pages 1-16, July.
    2. Espinoza-Andaluz, Mayken & Velasco-Galarza, Víctor & Romero-Vera, Alex, 2020. "On hydraulic tortuosity variations due to morphological considerations in 2D porous media by using the Lattice Boltzmann method," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 169(C), pages 74-87.

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