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High spatial resolution temperature profile measurements of solid-oxide fuel cells

Author

Listed:
  • Zaghloul, Mohamed A.S.
  • Mason, Jerry H.
  • Wang, Mohan
  • Buric, Michael
  • Peng, Zhaoqiang
  • Lee, Shiwoo
  • Ohodnicki, Paul
  • Abernathy, Harry
  • Chen, Kevin Peng

Abstract

Temperature gradients resulting from local electrochemical reactions, current distribution and geometry of gas flow channels in solid oxide fuel cells (SOFCs) create thermal stresses, localized thermophysical property gradients and uneven property evolution, contributing to SOFC degradation. This paper presents a new method to perform temperature measurements (up to 800 °C) at high spatial resolutions to monitor the operation of SOFCs. Using femtosecond laser irradiation, distributed fiber sensors were hardened for high temperature environment applications. Distributed fiber sensors were embedded in interconnected plates using an additive manufacturing method to perform temperature measurements with 4-mm spatial resolution during the operation of a planar fuel cell. The measurement revealed the impact of various H2 fuel concentrations and current loads have on temperature profiles of the SOFC tested. Temperature variation on the anode side was found to be less than 5 °C, and 3 °C on the cathode side. The measurements were compared to results from a multiphysics fuel cell performance model simulating similar conditions. These simulations predicted similar temperature gradients, indicating the experimental data obtained is reasonable. The model also predicts that the effect of the embedded sensor has on the local temperature will be minimal and that the gradient of temperature in the gas channels will be captured despite the separation between the sensor and the gas flow. The high spatial resolution data harnessed by these distributed fiber sensors provides experimental support for model-based design and optimization to improve the operational efficiency and longevity of solid oxide fuel cells and fuel cell assemblies.

Suggested Citation

  • Zaghloul, Mohamed A.S. & Mason, Jerry H. & Wang, Mohan & Buric, Michael & Peng, Zhaoqiang & Lee, Shiwoo & Ohodnicki, Paul & Abernathy, Harry & Chen, Kevin Peng, 2021. "High spatial resolution temperature profile measurements of solid-oxide fuel cells," Applied Energy, Elsevier, vol. 288(C).
    • Handle: RePEc:eee:appene:v:288:y:2021:i:c:s0306261921001689
    DOI: 10.1016/j.apenergy.2021.116633
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    References listed on IDEAS

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    1. Razbani, Omid & Wærnhus, Ivar & Assadi, Mohsen, 2013. "Experimental investigation of temperature distribution over a planar solid oxide fuel cell," Applied Energy, Elsevier, vol. 105(C), pages 155-160.
    2. Guk, Erdogan & Ranaweera, Manoj & Venkatesan, Vijay & Kim, Jung-Sik & Jung, WooChul, 2020. "In-situ temperature monitoring directly from cathode surface of an operating solid oxide fuel cell," Applied Energy, Elsevier, vol. 280(C).
    3. Li, Ang & Song, Ce & Lin, Zijing, 2017. "A multiphysics fully coupled modeling tool for the design and operation analysis of planar solid oxide fuel cell stacks," Applied Energy, Elsevier, vol. 190(C), pages 1234-1244.
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    1. 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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