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  • Title: Enhanced performance of supported HfO2 counter electrodes for redox couples used in dye-sensitized solar cells.
    Author: Yun S, Pu H, Chen J, Hagfeldt A, Ma T.
    Journal: ChemSusChem; 2014 Feb; 7(2):442-50. PubMed ID: 24399514.
    Abstract:
    Mesoporous-graphitic-carbon-supported HfO2 (HfO2 -MGC) nanohybrids were synthesized by using a soft-template route. Characterization and a systematic investigation of the catalytic properties, stability, and catalytic mechanism were performed for HfO2 -MGC counter electrodes (CEs) in dye-sensitized solar cells (DSSCs). The new HfO2 -MGC as a CE in DSSCs showed a surprisingly high efficiency of 7.75 % for the triiodide/iodide redox couple and 3.69 % for the disulfide/thiolate redox couple, greater than the Pt electrode in the corresponding electrolyte system, which opens up a possibility for its practical application.
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