Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 155, Issue 10, Pages A716-A720Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.2961044
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Funding
- JPL Research and Technology Development fund
- National Aeronautics and Space Administration
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Double-layer capacitor electrolytes employing 1,3-dioxolane as a cosolvent with acetonitrile have been evaluated in coin cells using electrochemical impedance spectroscopy and dc charging and discharging tests. Addition of the lower-melting-point 1,3-dioxolane to the standard acetonitrile solvent was found to extend the low-temperature operational range of test cells beyond that of commercially available cells. By adjusting the concentration of the tetraethylammonium tetrafluoroborate salt used, the equivalent series resistance can be minimized to enable optimal power delivery at a given temperature. (C) 2008 The Electrochemical Society.
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