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    Direct Operation of Solid Oxide Fuel Cells on Low-Concentration Oxygen-Bearing Coal-Bed Methane with High Stability

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    Fulltext not available
    Authors
    Jiao, Yong
    Wang, L.
    Zhang, L.
    An, Wenting
    Wang, Wei
    Zhou, W.
    Tade, Moses
    Shao, Zongping
    Bai, J.
    Li, S.
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Jiao, Y. and Wang, L. and Zhang, L. and An, W. and Wang, W. and Zhou, W. and Tade, M. et al. 2018. Direct Operation of Solid Oxide Fuel Cells on Low-Concentration Oxygen-Bearing Coal-Bed Methane with High Stability. Energy and Fuels. 32 (4): pp. 4547-4558.
    Source Title
    Energy and Fuels
    DOI
    10.1021/acs.energyfuels.7b02968
    ISSN
    0887-0624
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP150104365
    http://purl.org/au-research/grants/arc/DP160104835
    URI
    http://hdl.handle.net/20.500.11937/68047
    Collection
    • Curtin Research Publications
    Abstract

    This paper studies the electrochemical feasibility of the direct conversion of low-concentration, oxygen-bearing coal-bed methane (CBM, 30 vol % CH4) to electricity via solid oxide fuel cells (SOFCs). A fuel cell with the LiLaNi–Al2O3/Cu catalyst layer was developed, and a maximum power output of ∼1068 mW cm–2 was achieved at 850 °C using 30 vol % CBM fuel, which is only modestly lower than that from a cell based on hydrogen fuel. The stability test showed that the cell operation was quite stable during the 120-h test period, which is ∼40-fold longer than that of the cell without catalyst layer. The partial oxidation of methane (POM) occurring in the anode may play an important role when using 30 vol % CBM fuel, which not only supplies highly active gaseous fuels (H2 and CO) but also suppresses the carbon deposition on the anode. By modifying the anode with a LiLaNi–Al2O3/Cu catalyst layer, the POM of 30 vol % CBM was further promoted and the carbon deposition over the anode was mitigated more efficiently. Therefore, the strategy of direct conversion of low-concentration, oxygen-bearing CBM via the SOFCs with an anode catalyst layer may pave an alternative way to utilize this abundant resource efficiently and cleanly.

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