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Development of hybrid organic-inorganic materials for efficient charging/discharging in electrochemical and photoelectrochemical capacitors
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry.
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2011 (English)In: ECS Transactions, ISSN 1938-5862, E-ISSN 1938-6737, no 25, 93-102 p.Article in journal, Meeting abstract (Refereed) Published
Abstract [en]

A composite system of poly (3,4-ethylenedioxythiophene)/multi-walled carbon nanotubes has been investigated and characterized as a potential charge storage material for coupled dye-sensitized solar cell/electrochemical capacitor systems. The selected material can easily operate in organic media (lithium triflate/propylene carbonate) giving a specific capacitance of 95 F g -1 and energy density of 3.1 Wh kg -1. The combination of the composite material with dye-sensitized solar cell allows to obtain a photo-rechargeable supercapacitor (photocapacitor), destined to work with dies required organic media (here with N 719 dye). The photocapacitor system was built from mesoporous TiO 2 electrode, typical charge relay consisting of iodine/iodide redox couple and two charge storage electrodes separated by a liquid electrolyte. The system was tested under light illumination of 100 mW cm -2 with xenon lamp equipped with cut-off filters eliminating the ultraviolet and infrared part of the spectra.

Place, publisher, year, edition, pages
2011. no 25, 93-102 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-187992DOI: 10.1149/1.3655515ISBN: 9781607682851 (print)OAI: oai:DiVA.org:uu-187992DiVA: diva2:576238
Conference
219th ECS Meeting, 1-6 May 2011, Montreal, QC, Canada
Available from: 2012-12-12 Created: 2012-12-12 Last updated: 2017-12-07Bibliographically approved

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Vlachopoulos, NikolaosHäggman, LeifHagfeldt, Anders

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