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A simple but effective design to enhance the performance and durability of direct carbon solid oxide fuel cells

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  • Kong, Wei
  • Han, Zhen
  • Lu, Siyu
  • Ni, Meng

Abstract

The development of high-performance and durable direct carbon solid oxide fuel cells requires that the rate of the Boudouard reaction is enhanced without significantly increasing the fuel cell temperature. Herein, a simple design is proposed to improve the performance of direct carbon solid oxide fuel cells by introducing a heat bar into the anode carbon compartment. This design is evaluated numerically using a 2D model. After model validation, parametric simulations are conducted to compare the performance of direct carbon solid oxide fuel cells with and without the heat bar. The heat bar improves the temperature uniformity of the fuel cell and enhances the local temperature in the carbon compartment. As a result, the Boudouard reaction rate is enhanced by 14% at a voltage of 0.6 V, leading to a performance enhancement of 4.1%. The heat bar significantly reduces the difference between the maximum and minimum temperatures in the fuel cell by 40%, leading to improved durability. This design becomes more effective when using a heat bar with a high thermal conductivity and at lower operating voltages. This study clearly demonstrates that this new design is a simple but effective method for enhancing the performance and durability of direct carbon solid oxide fuel cells.

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  • Kong, Wei & Han, Zhen & Lu, Siyu & Ni, Meng, 2021. "A simple but effective design to enhance the performance and durability of direct carbon solid oxide fuel cells," Applied Energy, Elsevier, vol. 287(C).
    • Handle: RePEc:eee:appene:v:287:y:2021:i:c:s0306261921001306
    DOI: 10.1016/j.apenergy.2021.116586
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    References listed on IDEAS

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    1. Xu, Haoran & Chen, Bin & Tan, Peng & Zhang, Houcheng & Yuan, Jinliang & Liu, Jiang & Ni, Meng, 2017. "Performance improvement of a direct carbon solid oxide fuel cell system by combining with a Stirling cycle," Energy, Elsevier, vol. 140(P1), pages 979-987.
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    5. Xie, Heping & Zhai, Shuo & Chen, Bin & Liu, Tao & Zhang, Yuan & Ni, Meng & Shao, Zongping, 2020. "Coal pretreatment and Ag-infiltrated anode for high-performance hybrid direct coal fuel cell," Applied Energy, Elsevier, vol. 260(C).
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    Cited by:

    1. Siyu Lu & Man Zhang & Jie Wu & Wei Kong, 2022. "Performance Investigation on Mono-Block-Layer Build Type Solid Oxide Fuel Cells with a Vertical Rib Design," Energies, MDPI, vol. 15(3), pages 1-12, January.
    2. Zeyu Lin & Hamdi Ayed & Belgacem Bouallegue & Hana Tomaskova & Saeid Jafarzadeh Ghoushchi & Gholamreza Haseli, 2021. "An Integrated Mathematical Attitude Utilizing Fully Fuzzy BWM and Fuzzy WASPAS for Risk Evaluation in a SOFC," Mathematics, MDPI, vol. 9(18), pages 1-18, September.

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