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Graphene Nanoplatelets Outperforming Platinum as the Electrocatalyst in Co-Bipyridine-Mediated Dye-Sensitized Solar Cells
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SYSNO ASEP 0369609 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Graphene Nanoplatelets Outperforming Platinum as the Electrocatalyst in Co-Bipyridine-Mediated Dye-Sensitized Solar Cells Tvůrce(i) Kavan, Ladislav (UFCH-W) RID, ORCID
Yum, J. H. (CH)
Grätzel, M. (CH)Zdroj.dok. Nano Letters. - : American Chemical Society - ISSN 1530-6984
Roč. 11, č. 12 (2011), s. 5501-5506Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova graphene ; dye sensitized solar cell ; cobalt redox shuttle Vědní obor RIV CG - Elektrochemie CEP LC510 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy IAA400400804 GA AV ČR - Akademie věd KAN200100801 GA AV ČR - Akademie věd CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000297950200069 DOI 10.1021/nl203329c Anotace 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. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2013
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