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Nanoengineering of cathode layers for solid oxide fuel cells to achieve superior power densities

Author

Listed:
  • Katherine Develos-Bagarinao

    (National Institute of Advanced Industrial Science and Technology (AIST))

  • Tomohiro Ishiyama

    (National Institute of Advanced Industrial Science and Technology (AIST))

  • Haruo Kishimoto

    (National Institute of Advanced Industrial Science and Technology (AIST))

  • Hiroyuki Shimada

    (National Institute of Advanced Industrial Science and Technology (AIST))

  • Katsuhiko Yamaji

    (National Institute of Advanced Industrial Science and Technology (AIST))

Abstract

Solid oxide fuel cells (SOFCs) are power-generating devices with high efficiencies and considered as promising alternatives to mitigate energy and environmental issues associated with fossil fuel technologies. Nanoengineering of electrodes utilized for SOFCs has emerged as a versatile tool for significantly enhancing the electrochemical performance but needs to overcome issues for integration into practical cells suitable for widespread application. Here, we report an innovative concept for high-performance thin-film cathodes comprising nanoporous La0.6Sr0.4CoO3−δ cathodes in conjunction with highly ordered, self-assembled nanocomposite La0.6Sr0.4Co0.2Fe0.8O3−δ (lanthanum strontium cobalt ferrite) and Ce0.9Gd0.1O2−δ (gadolinia-doped ceria) cathode layers prepared using pulsed laser deposition. Integration of the nanoengineered cathode layers into conventional anode-supported cells enabled the achievement of high current densities at 0.7 V reaching ~2.2 and ~4.7 A/cm2 at 650 °C and 700 °C, respectively. This result demonstrates that tuning material properties through an effective nanoengineering approach could significantly boost the electrochemical performance of cathodes for development of next-generation SOFCs with high power output.

Suggested Citation

  • Katherine Develos-Bagarinao & Tomohiro Ishiyama & Haruo Kishimoto & Hiroyuki Shimada & Katsuhiko Yamaji, 2021. "Nanoengineering of cathode layers for solid oxide fuel cells to achieve superior power densities," Nature Communications, Nature, vol. 12(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24255-w
    DOI: 10.1038/s41467-021-24255-w
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    Cited by:

    1. Wang, Chen & He, Qijiao & Li, Zheng & Yu, Jie & Bello, Idris Temitope & Zheng, Keqing & Han, Minfang & Ni, Meng, 2024. "A novel in-tube reformer for solid oxide fuel cell for performance improvement and efficient thermal management: A numerical study based on artificial neural network and genetic algorithm," Applied Energy, Elsevier, vol. 357(C).

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