The energy density and power density of lightweight Ni-H2 aerospace batteries utilizing the nickel oxide electrode are often limited by the microstructures of both the collector and the resulting active deposit in/on the collector. Heretofore, these two microstructures have been intimately linked to one another by the materials used to prepare the collector grid as well as the methods and conditions used to deposit the active material. Significant weight and performance advantages have been demonstrated by Britton and Reid at NASA-LeRC using FIBREX nickel mats of approximately 28-32 mu m diameter. Work in the laboratory has investigated the potential performance advantages offered by nickel fiber composite electrodes containing a mixture of fibers as small as 2 mu m diameter (available from Memtec America Corporation). These electrode collectors possess in excess of an order of magnitude more surface area per gram of collector than FIBREX nickel. The increase in surface area of the collector roughly translates into an order of magnitude thinner layer of active material. Performance data and advantages of these thin layer structures are presented. Attributes and limitations of their electrode microstructure to independently control void volume, pore structure of the Ni(OH)2 deposition, and resulting electrical properties are discussed


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    High surface area, low-weight composite nickel fiber electrodes


    Weitere Titelangaben:

    Nickel-Faser-Verbundelektroden mit großer Oberfläche und kleinem Gewicht für NiH2-Sekundärzellen in der Raumfahrt


    Beteiligte:
    Johnson, B.A. (Autor:in) / Ferro, R.E. (Autor:in) / Swain, G.M. (Autor:in) / Tatarchuk, B.T. (Autor:in)


    Erscheinungsdatum :

    1994


    Format / Umfang :

    9 Seiten, 8 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    High Surface Area, Low Weight Composite Nickel Fiber Electrodes

    Johnson, B. A. / Ferro, R. E. / Swain, G. M. et al. | British Library Conference Proceedings | 1993


    Light Weight Nickel-Alkaline Cells Using Fiber Electrodes

    Pickett, D. F. / Willis, R. E. / Britton, D. et al. | British Library Conference Proceedings | 2004


    Light Weight Nickel-Alkaline Cells Using Fiber Electrodes

    Pickett, David F. / Britton, Doris / Saelens, Johan et al. | SAE Technical Papers | 2004


    Characterization of Electrochemically Impregnated Fiber Nickel Electrodes

    Coates, D. / Francisco, J. / Chiappetti, D. et al. | British Library Conference Proceedings | 1998