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    Aerogel-Based PEMFC Catalysts Operating at Room Temperature

    Source: Journal of Fuel Cell Science and Technology:;2006:;volume( 003 ):;issue: 004::page 477
    Author:
    A. Smirnova
    ,
    X. Dong
    ,
    N. Sammes
    ,
    H. Hara
    DOI: 10.1115/1.2349532
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A carbon-aerogel-supported Pt catalyst with 22nm pore size distribution and low Pt loading (0.1mg∕cm2) has been tested in a proton exchange membrane fuel cell (PEMFC). The performance of the PEMFC and kinetic parameters of the catalyst at room temperature are discussed in terms of microstructure of the support and sulfonated tetrafluoroethylene (Nafion) distribution. The PEMFCs demonstrated power densities up to 0.5mW∕cm2 at 0.6V in air∕hydrogen and 2atm backpressure on both cathode and anode. Continuous cycling with upper potential sweep limits of 1.0 and 1.2V leads to degradation effects that result in decreasing of the electrochemical surface area (ESA) of the catalyst. The comparison of an ESA decrease for a 1.0 and 1.2V sweep limit after 1000cycles indicated that the higher degradation effects are due to the oxidation of carbon support.
    keyword(s): Platinum catalysts , Carbon , Catalysts , Proton exchange membrane fuel cells , Temperature AND Anodes ,
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      Aerogel-Based PEMFC Catalysts Operating at Room Temperature

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    http://yetl.yabesh.ir/yetl1/handle/yetl/134033
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    contributor authorA. Smirnova
    contributor authorX. Dong
    contributor authorN. Sammes
    contributor authorH. Hara
    date accessioned2017-05-09T00:20:29Z
    date available2017-05-09T00:20:29Z
    date copyrightNovember, 2006
    date issued2006
    identifier issn2381-6872
    identifier otherJFCSAU-28927#477_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/134033
    description abstractA carbon-aerogel-supported Pt catalyst with 22nm pore size distribution and low Pt loading (0.1mg∕cm2) has been tested in a proton exchange membrane fuel cell (PEMFC). The performance of the PEMFC and kinetic parameters of the catalyst at room temperature are discussed in terms of microstructure of the support and sulfonated tetrafluoroethylene (Nafion) distribution. The PEMFCs demonstrated power densities up to 0.5mW∕cm2 at 0.6V in air∕hydrogen and 2atm backpressure on both cathode and anode. Continuous cycling with upper potential sweep limits of 1.0 and 1.2V leads to degradation effects that result in decreasing of the electrochemical surface area (ESA) of the catalyst. The comparison of an ESA decrease for a 1.0 and 1.2V sweep limit after 1000cycles indicated that the higher degradation effects are due to the oxidation of carbon support.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleAerogel-Based PEMFC Catalysts Operating at Room Temperature
    typeJournal Paper
    journal volume3
    journal issue4
    journal titleJournal of Fuel Cell Science and Technology
    identifier doi10.1115/1.2349532
    journal fristpage477
    journal lastpage481
    identifier eissn2381-6910
    keywordsPlatinum catalysts
    keywordsCarbon
    keywordsCatalysts
    keywordsProton exchange membrane fuel cells
    keywordsTemperature AND Anodes
    treeJournal of Fuel Cell Science and Technology:;2006:;volume( 003 ):;issue: 004
    contenttypeFulltext
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