Nanoscale membrane electrode assemblies based on porous anodic alumina for hydrogen-oxygen fuel cell

Francesco Di Quarto, Patrizia Bocchetta

    Risultato della ricerca: Articlepeer review

    19 Citazioni (Scopus)

    Abstract

    In this paper, we demonstrate that nanoscale membrane electrode assemblies, functioning in a H 2/O 2 fuel cell, can be fabricated by impregnation of anodic alumina porous membranes with Nafion® and phosphotungstic acid. Porous anodic alumina is potentially a promising material for thin-film micro power sources because of its ability to be manipulated in micro-machining operations. Alumina membranes (Whatman, 50 μm thick, and pore diameters of 200 nm) impregnated with the proton conductor were characterized by means of scanning electron microscopy, X-ray diffraction, and thermal analysis. The electrochemical characterization of the membrane electrode assemblies was carried out by recording the polarization curves of a hydrogen-oxygen 5 cm 2 fuel cell working at low temperatures (25∈÷∈80 °C) in humid atmosphere. Our assemblies realized with alumina membranes filled with phosphotungstic acid and Nafion® reach respectively the peak powers of 20 and 4 mW/cm 2 at room temperature using hydrogen and oxygen as fuel and oxidizer
    Lingua originaleEnglish
    pagine (da-a)1253-1261
    Numero di pagine9
    RivistaJournal of Solid State Electrochemistry
    Volume11
    Stato di pubblicazionePublished - 2007

    All Science Journal Classification (ASJC) codes

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    • ???subjectarea.asjc.3100.3104???
    • ???subjectarea.asjc.1600.1603???
    • ???subjectarea.asjc.2200.2208???

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