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Differential analysis of SOFC current-voltage characteristics

Author

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  • Stoynov, Zdravko
  • Vladikova, Daria
  • Burdin, Blagoy
  • Laurencin, Jerome
  • Montinaro, Dario
  • Raikova, Gergana
  • Schiller, Günter
  • Szabo, Patric

Abstract

Solid Oxide Fuel Cells (SOFCs) are regarded as a promising technology for economic power generation due to their high efficiency and large fuel flexibility. Durability is a severe hurdle towards their deployment. The near future targets in respect to Degradation Rate (DR) are about 0.1% kh−1, which needs improved monitoring and diagnostics. This work aims at introducing a new approach based on Differential Analysis of the i-V curves, named DiVA. It operates with the Differential Resistance Rd and its evolution during long term testing. Two new performance indicators are introduced. Since derivatives are more sensitive to small deviations, the Differential Resistance Analysis (DRA) ensures increased sensitivity and information capability in respect to degradation monitoring and diagnostics, which is demonstrated on a small stack during thermal cycling conditions – before and after the first thermal cycle, on button cells tested up to 9000 h, as well as on button cells operating in fuel cell and in electrolysis mode. The results show that DRA is several times more sensitive in comparison with the classical DR evaluation based on registration of the voltage decrease at constant current.

Suggested Citation

  • Stoynov, Zdravko & Vladikova, Daria & Burdin, Blagoy & Laurencin, Jerome & Montinaro, Dario & Raikova, Gergana & Schiller, Günter & Szabo, Patric, 2018. "Differential analysis of SOFC current-voltage characteristics," Applied Energy, Elsevier, vol. 228(C), pages 1584-1590.
    • Handle: RePEc:eee:appene:v:228:y:2018:i:c:p:1584-1590
    DOI: 10.1016/j.apenergy.2018.06.138
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    References listed on IDEAS

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    1. Guida, Maurizio & Postiglione, Fabio & Pulcini, Gianpaolo, 2015. "A random-effects model for long-term degradation analysis of solid oxide fuel cells," Reliability Engineering and System Safety, Elsevier, vol. 140(C), pages 88-98.
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    1. Daria Vladikova & Blagoy Burdin & Asrar Sheikh & Paolo Piccardo & Milena Krapchanska & Dario Montinaro & Roberto Spotorno, 2022. "Accelerated Stress Tests for Solid Oxide Cells via Artificial Aging of the Fuel Electrode," Energies, MDPI, vol. 15(9), pages 1-21, April.
    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. Roberto Spotorno & Fiammetta Rita Bianchi & Daniele Paravidino & Barbara Bosio & Paolo Piccardo, 2022. "Test and Modelling of Solid Oxide Fuel Cell Durability: A Focus on Interconnect Role on Global Degradation," Energies, MDPI, vol. 15(8), pages 1-19, April.
    4. Li, Bangxin & Irvine, John T.S. & Ni, Jiupai & Ni, Chengsheng, 2022. "High-performance and durable alcohol-fueled symmetrical solid oxide fuel cell based on ferrite perovskite electrode," Applied Energy, Elsevier, vol. 306(PB).
    5. Danilov, Nikolay & Lyagaeva, Julia & Vdovin, Gennady & Medvedev, Dmitry, 2019. "Multifactor performance analysis of reversible solid oxide cells based on proton-conducting electrolytes," Applied Energy, Elsevier, vol. 237(C), pages 924-934.
    6. Dai, Huidong & Besser, R.S., 2022. "Understanding hydrogen sulfide impact on a portable, commercial, propane-powered solid-oxide fuel cell," Applied Energy, Elsevier, vol. 307(C).
    7. Hoang, Anh Tuan & Pandey, Ashok & Martinez De Osés, Francisco Javier & Chen, Wei-Hsin & Said, Zafar & Ng, Kim Hoong & Ağbulut, Ümit & Tarełko, Wiesław & Ölçer, Aykut I. & Nguyen, Xuan Phuong, 2023. "Technological solutions for boosting hydrogen role in decarbonization strategies and net-zero goals of world shipping: Challenges and perspectives," Renewable and Sustainable Energy Reviews, Elsevier, vol. 188(C).

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