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Lowering the operating temperature of protonic ceramic electrochemical cells to

Author

Listed:
  • Fan Liu

    (Kansas State University)

  • Hao Deng

    (Kansas State University)

  • David Diercks

    (Colorado School of Mines)

  • Praveen Kumar

    (Colorado School of Mines)

  • Mohammed Hussain Abdul Jabbar

    (Nissan Technical Centre North America (NTCNA))

  • Cenk Gumeci

    (Nissan Technical Centre North America (NTCNA))

  • Yoshihisa Furuya

    (Nissan Technical Centre North America (NTCNA))

  • Nilesh Dale

    (Nissan Technical Centre North America (NTCNA))

  • Takanori Oku

    (Nissan Motor Company Limited)

  • Masahiro Usuda

    (Nissan Motor Company Limited)

  • Pejman Kazempoor

    (University of Oklahoma)

  • Liyang Fang

    (Kansas State University)

  • Di Chen

    (Kansas State University)

  • Bin Liu

    (Kansas State University)

  • Chuancheng Duan

    (Kansas State University)

Abstract

Protonic ceramic electrochemical cells (PCECs) can be employed for power generation and sustainable hydrogen production. Lowering the PCEC operating temperature can facilitate its scale-up and commercialization. However, achieving high energy efficiency and long-term durability at low operating temperatures is a long-standing challenge. Here, we report a simple and scalable approach for fabricating ultrathin, chemically homogeneous, and robust proton-conducting electrolytes and demonstrate an in situ formed composite positive electrode, Ba0.62Sr0.38CoO3−δ–Pr1.44Ba0.11Sr0.45Co1.32Fe0.68O6−δ, which significantly reduces ohmic resistance, positive electrode–electrolyte contact resistance and electrode polarization resistance. The PCECs attain high power densities in fuel-cell mode (~0.75 W cm−2 at 450 °C and ~0.10 W cm−2 at 275 °C) and exceptional current densities in steam electrolysis mode (−1.28 A cm−2 at 1.4 V and 450 °C). At 600 °C, the PCECs achieve a power density of ~2 W cm−2. Additionally, we demonstrate the direct utilization of methane and ammonia for power generation at

Suggested Citation

  • Fan Liu & Hao Deng & David Diercks & Praveen Kumar & Mohammed Hussain Abdul Jabbar & Cenk Gumeci & Yoshihisa Furuya & Nilesh Dale & Takanori Oku & Masahiro Usuda & Pejman Kazempoor & Liyang Fang & Di , 2023. "Lowering the operating temperature of protonic ceramic electrochemical cells to," Nature Energy, Nature, vol. 8(10), pages 1145-1157, October.
    • Handle: RePEc:nat:natene:v:8:y:2023:i:10:d:10.1038_s41560-023-01350-4
    DOI: 10.1038/s41560-023-01350-4
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