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

Wachter P, Schreiner C, Zistler M, Gerhard D, Wasserscheid P, Gores HJ (2008)


Publication Type: Journal article

Publication year: 2008

Journal

Publisher: Springer Verlag (Germany)

City/Town: SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA

Book Volume: 160

Pages Range: 125-133

Journal Issue: 1-2

DOI: 10.1007/s00604-007-0803-2

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.

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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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