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Promotion of water-mediated carbon removal by nanostructured barium oxide/nickel interfaces in solid oxide fuel cells

Author

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  • Lei Yang

    (School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245, USA.)

  • YongMan Choi

    (Brookhaven National Laboratory)

  • Wentao Qin

    (School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245, USA.)

  • Haiyan Chen

    (New Jersey Institute of Technology)

  • Kevin Blinn

    (School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245, USA.)

  • Mingfei Liu

    (School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245, USA.)

  • Ping Liu

    (Brookhaven National Laboratory)

  • Jianming Bai

    (High Temperature Materials Laboratory, Oak Ridge National Laboratory)

  • Trevor A. Tyson

    (New Jersey Institute of Technology)

  • Meilin Liu

    (School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245, USA.)

Abstract

The existing Ni-yttria-stabilized zirconia anodes in solid oxide fuel cells (SOFCs) perform poorly in carbon-containing fuels because of coking and deactivation at desired operating temperatures. Here we report a new anode with nanostructured barium oxide/nickel (BaO/Ni) interfaces for low-cost SOFCs, demonstrating high power density and stability in C3H8, CO and gasified carbon fuels at 750°C. Synchrotron-based X-ray analyses and microscopy reveal that nanosized BaO islands grow on the Ni surface, creating numerous nanostructured BaO/Ni interfaces that readily adsorb water and facilitate water-mediated carbon removal reactions. Density functional theory calculations predict that the dissociated OH from H2O on BaO reacts with C on Ni near the BaO/Ni interface to produce CO and H species, which are then electrochemically oxidized at the triple-phase boundaries of the anode. This anode offers potential for ushering in a new generation of SOFCs for efficient, low-emission conversion of readily available fuels to electricity.

Suggested Citation

  • Lei Yang & YongMan Choi & Wentao Qin & Haiyan Chen & Kevin Blinn & Mingfei Liu & Ping Liu & Jianming Bai & Trevor A. Tyson & Meilin Liu, 2011. "Promotion of water-mediated carbon removal by nanostructured barium oxide/nickel interfaces in solid oxide fuel cells," Nature Communications, Nature, vol. 2(1), pages 1-9, September.
    • Handle: RePEc:nat:natcom:v:2:y:2011:i:1:d:10.1038_ncomms1359
    DOI: 10.1038/ncomms1359
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    Cited by:

    1. Pan, Zehua & Shen, Jian & Wang, Jingyi & Xu, Xinhai & Chan, Wei Ping & Liu, Siyu & Zhou, Yexin & Yan, Zilin & Jiao, Zhenjun & Lim, Teik-Thye & Zhong, Zheng, 2022. "Thermodynamic analyses of a standalone diesel-fueled distributed power generation system based on solid oxide fuel cells," Applied Energy, Elsevier, vol. 308(C).

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