A microelectrode study of triiodide diffusion coefficients in mixtures of room temperature ionic liquids, useful for dye-sensitised solar cells

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Wachter P, Schreiner C, Zistler M, Gerhard D, Wasserscheid P, Gores HJ
Zeitschrift: Microchimica Acta
Verlag: Springer Verlag (Germany)
Verlagsort: SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA
Jahr der Veröffentlichung: 2008
Band: 160
Heftnummer: 1-2
Seitenbereich: 125-133
ISSN: 0026-3672


Abstract


The diffusion coefficients of triiodide in binary mixtures of ionic liquids at 25 +/- 0.05 degrees C were determined via steady-state cyclic voltammetry at platinum disk microelectrodes in five different electrolyte systems, all representing potential ionic liquid based electrolytes for dye-sensitised solar cells. These electrolytes were composed of iodine, 1-methyl-3-propylimidazolium iodide (acting as iodide source) and a second lower viscous ionic liquid, namely 1-ethyl-3-methylimidazolium dicyanamide, 1-ethyl-3-methylimidazolium tetrafluoroborate or 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide) and were investigated either at fixed ionic liquid composition and varying iodine concentration or at fixed iodine concentration and varying 1-methyl-3-propylimidazolium iodide content. To check and optimise our measurement set-up, four Pt disk microelectrodes with four different electrode radii (0.3-5 mu m) were tested at a well known system (ferrocene/tetraethylammonium tetrafluoroborate/acetonitrile solutions). The radius of each electrode was controlled by scanning electron microscopy at the beginning and during the work.



FAU-Autoren / FAU-Herausgeber

Wasserscheid, Peter Prof. Dr.
Lehrstuhl für Chemische Reaktionstechnik


Autor(en) der externen Einrichtung(en)
Universität Regensburg


Zitierweisen

APA:
Wachter, P., Schreiner, C., Zistler, M., Gerhard, D., Wasserscheid, P., & Gores, H.J. (2008). A microelectrode study of triiodide diffusion coefficients in mixtures of room temperature ionic liquids, useful for dye-sensitised solar cells. Microchimica Acta, 160(1-2), 125-133. https://dx.doi.org/10.1007/s00604-007-0803-2

MLA:
Wachter, Philipp, et al. "A microelectrode study of triiodide diffusion coefficients in mixtures of room temperature ionic liquids, useful for dye-sensitised solar cells." Microchimica Acta 160.1-2 (2008): 125-133.

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Zuletzt aktualisiert 2018-06-07 um 23:23