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Strategies for Lowering Solid Oxide Fuel Cells Operating Temperature

Author

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  • Albert Tarancón

    (IMB-CNM (CSIC), Institute of Microelectronics of Barcelona, Campus UAB, 08193 Bellaterra, Barcelona, Spain
    Department of Advanced Materials for Energy Applications, Catalonia Institute for Energy Research (IREC), Josep Pla 2, B2, planta baixa, 08019, Barcelona, Spain)

Abstract

Lowering the operating temperature of solid oxide fuel cells (SOFCs) to the intermediate range (500–700 ºC) has become one of the main SOFC research goals. High operating temperatures put numerous requirements on materials selection and on secondary units, limiting the commercial development of SOFCs. The present review first focuses on the main effects of reducing the operating temperature in terms of materials stability, thermo-mechanical mismatch, thermal management and efficiency. After a brief survey of the state-of-the-art materials for SOFCs, attention is focused on emerging oxide-ionic conductors with high conductivity in the intermediate range of temperatures with an introductory section on materials technology for reducing the electrolyte thickness. Finally, recent advances in cathode materials based on layered mixed ionic-electronic conductors are highlighted because the decreasing temperature converts the cathode into the major source of electrical losses for the whole SOFC system. It is concluded that the introduction of alternative materials that would enable solid oxide fuel cells to operate in the intermediate range of temperatures would have a major impact on the commercialization of fuel cell technology.

Suggested Citation

  • Albert Tarancón, 2009. "Strategies for Lowering Solid Oxide Fuel Cells Operating Temperature," Energies, MDPI, vol. 2(4), pages 1-21, November.
    • Handle: RePEc:gam:jeners:v:2:y:2009:i:4:p:1130-1150:d:6301
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    References listed on IDEAS

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    1. Zongping Shao & Sossina M. Haile & Jeongmin Ahn & Paul D. Ronney & Zhongliang Zhan & Scott A. Barnett, 2005. "A thermally self-sustained micro solid-oxide fuel-cell stack with high power density," Nature, Nature, vol. 435(7043), pages 795-798, June.
    2. Philippe Lacorre & François Goutenoire & Odile Bohnke & Richard Retoux & Yvon Laligant, 2000. "Designing fast oxide-ion conductors based on La2Mo2O9," Nature, Nature, vol. 404(6780), pages 856-858, April.
    3. Truls Norby, 2001. "The promise of protonics," Nature, Nature, vol. 410(6831), pages 877-878, April.
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    Cited by:

    1. Jin, Xinfang & Ku, Anthony & Ohara, Brandon & Huang, Kevin & Singh, Surinder, 2021. "Performance analysis of a 550MWe solid oxide fuel cell and air turbine hybrid system powered by coal-derived syngas," Energy, Elsevier, vol. 222(C).

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