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Enhanced Performance of Supported HfO2 Counter Electrodes for Redox Couples Used in Dye-Sensitized Solar Cells
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
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2014 (English)In: ChemSusChem, ISSN 1864-5631, E-ISSN 1864-564X, Vol. 7, no 2, 442-450 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2014. Vol. 7, no 2, 442-450 p.
Keyword [en]
density functional calculations, dye/pigments, electrochemistry, energy conversion, hafnium
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-228062DOI: 10.1002/cssc.201301140ISI: 000336804000014OAI: oai:DiVA.org:uu-228062DiVA: diva2:732018
Available from: 2014-07-03 Created: 2014-07-03 Last updated: 2017-12-05Bibliographically approved

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Hagfeldt, Anders

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