Počet záznamů: 1  

Optically Transparent Cathode for Co(III/II) Mediated Dye-Sensitized Solar Cells Based on Graphene Oxide

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    0386348 - ÚFCH JH 2013 RIV US eng J - Článek v odborném periodiku
    Kavan, Ladislav - Yum, J. H. - Graetzel, M.
    Optically Transparent Cathode for Co(III/II) Mediated Dye-Sensitized Solar Cells Based on Graphene Oxide.
    ACS Applied Materials and Interfaces. Roč. 4, č. 12 (2012), s. 6998-7005. ISSN 1944-8244. E-ISSN 1944-8252
    Grant CEP: GA AV ČR IAA400400804; GA AV ČR KAN200100801
    Institucionální podpora: RVO:61388955
    Klíčová slova: graphene oxide * reduced graphene oxide * dye-sensitized solar cell
    Kód oboru RIV: CG - Elektrochemie
    Impakt faktor: 5.008, rok: 2012

    Thin semitransparent films were fabricated on F-doped SnO2 (FTO) from single-layer graphene oxide (GO) either pure or in a composite with graphene nanoplatelets. Electrocatalytic activity of prepared films was tested for the Co(bpy)33+/2+ redox couple in acetonitrile electrolyte solution. Pristine GO showed almost no activity, resembling the properties of basal plane pyrolytic graphite. However, electrochemical performance of graphene oxide improved dramatically upon chemical reduction with hydrazine and/or heat treatment. All GO-containing films were firmly bonded to FTO, which contrasted with the poor adhesion of sole graphene nanoplatelets to this support. The activity loss during long-term aging was considerably improved, too. Enhanced stability of GO-containing films together with high electrocatalytic activity is beneficial for application in a new generation of dye-sensitized solar cells employing Co(bpy)33+/2+ as the redox shuttle.
    Trvalý link: http://hdl.handle.net/11104/0218264

     
     
Počet záznamů: 1  

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