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    A self-heating oxygen pump using microchanneled ceramic membranes for portable oxygen supply

    Access Status
    Fulltext not available
    Authors
    Shao, Xin
    Dong, Dehua
    Parkinson, G.
    Li, Chun-Zhu
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Shao, X. and Dong, D. and Parkinson, G. and Li, C. 2018. A self-heating oxygen pump using microchanneled ceramic membranes for portable oxygen supply. Chemical Engineering Science. 192: pp. 541-550.
    Source Title
    Chemical Engineering Science
    DOI
    10.1016/j.ces.2018.07.058
    ISSN
    0009-2509
    School
    Fuels and Energy Technology Institute
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP160104720
    URI
    http://hdl.handle.net/20.500.11937/71234
    Collection
    • Curtin Research Publications
    Abstract

    © 2018 A ceramic oxygen pump has been investigated as a potential self-heated oxygen generation device using electric potential as driving force. The required high temperature (around 748 °C) can be maintained locally on the membrane while the environmental temperature is kept at lower than 200 °C. The conventional dense membrane structure was found to be inappropriate for this application because it could not withstand the thermal shock induced by rapid heating and cooling. In contrast, the microchanneled membrane used in this work demonstrated excellent thermal shock resistance. It also demonstrated high Faraday efficiency when no electrode was coated on the microchannel surface. The Faraday efficiency exceeded 90% at 748 °C when 6.35 A cm-2 current density was applied. Under these conditions, an oxygen flux density of 20.6 ml cm-2 min-1 was achieved and this continued for 100 h without any degradation. Combined, these factors demonstrate that the microchanneled membrane can be potentially utilized within an oxygen generator having small size and good durability.

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