Zistler, M. and Wachter, P. and Schreiner, C. and Fleischmann, M. and Gerhard, D. and Wasserscheid, P. and Hinsch, A. and Gores, Heiner J. (2007) Temperature dependent impedance analysis of binary ionic liquid electrolytes for dye-sensitized solar cells. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 154 (9). B925-B930. ISSN 0013-4651, 1945-7111
Full text not available from this repository. (Request a copy)Abstract
At platinum electrodes kinetics of the I-/I-3(-) electrode reaction were studied at two potential electrolyte systems for dye-sensitized solar cells (DSSCs) based on binary ionic liquid (IL) blends, i.e., 1-ethyl-3-methylimidazolium dicyanamide ([EMIM] [N(CN)(2)])/1-methyl-3-propylimidazolium iodide ([PMIM]I) and 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM] [BF4])/[PMIM]I, respectively. The charge transfer resistances of the electrode reaction were determined via impedance spectroscopy for electrolyte blends at a mixing ratio of ILs of 9 mol % [PMIM]I (for [EMIM][N(CN)(2)]/[PMIM]I) and 10 mol % [PMIM]I (for[EMIM][BF4]/[PMIM]I) up to 100 mol % [PMIM]I. In addition, the influence of iodine concentration on the electrode reaction was investigated for both electrolyte systems. The measurements were taken in a temperature range of 25 to 60 degrees C to analyze the electrolyte properties in view of thermal stress of the DSSC for later practical application. Furthermore, exchange current densities were determined: the expected Arrhenius behavior was observed. Activation energies were obtained by fitting linearized Arrhenius plots. (C) 2007 The Electrochemical Society.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ELECTRICAL DOUBLE-LAYER; PLATINUM-ELECTRODE; REDOX COUPLE; MOLTEN-SALTS; CAPACITANCE; CONVERSION; PERFORMANCE; INTERFACES; EFFICIENCY; STABILITY; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > PD Dr. Heiner Jakob Gores |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Jan 2021 09:19 |
| Last Modified: | 13 Jan 2021 09:19 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33466 |
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