Počet záznamů: 1

Graphene Nanoplatelets Outperforming Platinum as the Electrocatalyst in Co-Bipyridine-Mediated Dye-Sensitized Solar Cells

  1. 1.
    0369609 - UFCH-W 2013 RIV US eng J - Článek v odborném periodiku
    Kavan, Ladislav - Yum, J. H. - Grätzel, M.
    Graphene Nanoplatelets Outperforming Platinum as the Electrocatalyst in Co-Bipyridine-Mediated Dye-Sensitized Solar Cells.
    Nano Letters. Roč. 11, č. 12 (2011), s. 5501-5506 ISSN 1530-6984
    Grant CEP: GA MŠk LC510; GA AV ČR IAA400400804; GA AV ČR KAN200100801
    Výzkumný záměr: CEZ:AV0Z40400503
    Klíčová slova: graphene * dye sensitized solar cell * cobalt redox shuttle
    Kód oboru RIV: CG - Elektrochemie
    Impakt faktor: 13.198, rok: 2011

    Graphene nanoplatelets (GNP) in the form of thin semitransparent films on F-doped SnO2 (FTO) exhibit high electrocatalytic activity for the Co(bpy)33+/2+ redox couple in acetonitrile electrolyte solution. The GNP film is superior to the traditional electrocatalyst, that is, platinum, both in charge-transfer resistance (exchange current) and in electrochemical stability under prolonged potential cycling. The good electrochemical performance of GNP is readily applicable for dye-sensitized solar cells with Y123-sensitized TiO2 photoanodes and Co(bpy)33+/2+ as the redox shuttle. The dye-sensitized solar cell with GNP cathode is superior to that with the Pt-FTO cathode particularly in fill factor and in power conversion efficiency at higher illumination intensity.
    Trvalý link: http://hdl.handle.net/11104/0203632