Moosbauer, Dominik and Jordan, Steffen and Wudy, Franz and Zhang, Sheng S. and Schmidt, Michael and Gores, Heiner J. (2009) Determination of Electrochemical Windows of Novel Electrolytes for Double Layer Capacitors by Stepwise Cyclic Voltammetry Experiments. ACTA CHIMICA SLOVENICA, 56 (1). pp. 218-224. ISSN 1318-0207, 1580-3155
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In this work we synthesized two novel salts for electrochemical double layer capacitors, i.e. N,N-dimethylpyrrolidinium tetrakis(trifluoroacetato) borate (DMPBTFAc) and N-ethyl-N-methyl-pyrrolidinium bis[1,2-oxalato(2-O,O')]borate (EMPBOX), and determined the electrochemical window of their solutions in acetonitrile (AN) by using stepwise cyclic voltammetry. The electrochemical window plays an important role in electrochemical double layer capacitors (EDLCs) as the energy density of such devices depends on the square of the operating voltage. Because anodic and cathodic decomposition voltages may be shifted with respect to the open circuit voltage (OCV), the OCV is another important characteristic of such an electrolyte. Both DMPBTFAc and EMPBOX solutions show wide electrochemical windows of about 4 V with nearly equal voltage gaps for the anodic and cathodic decomposition at activated carbon electrodes.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | STABILITY LIMITS; SUPERCAPACITORS; TEMPERATURE; Double layer capacitor; EDLC; DLC; electrochemical window; cyclic voltammetry; Faradaic Fraction |
| 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: | 07 Oct 2020 11:16 |
| Last Modified: | 07 Oct 2020 11:16 |
| URI: | https://pred.uni-regensburg.de/id/eprint/29597 |
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