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Capacitive energy storage from -50 to 100 °C using an ionic liquid electrolyte

Lin, Rongying and Taberna, Pierre-Louis and Fantini, Sébastien and Presser, Volker and Pérez, Carlos R. and Malbosc, François and Rupesinghe, Nalin L. and Teo, Kenneth B. K. and Gogotsi, Yury and Simon, Patrice Capacitive energy storage from -50 to 100 °C using an ionic liquid electrolyte. (2011) The Journal of Physical Chemistry Letters, 2 (19). 2396-2401. ISSN 1948-7185

(Document in English)

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Official URL: http://dx.doi.org/10.1021/jz201065t


Relying on redox reactions, most batteries are limited in their ability to operate at very low or very high temperatures. While performance of electrochemical capacitors is less dependent on the temperature, present-day devices still cannot cover the entire range needed for automotive and electronics applications under a variety of environmental conditions. We show that the right combination of the exohedral nanostructured carbon (nanotubes and onions) electrode and a eutectic mixture of ionic liquids can dramatically extend the temperature range of electrical energy storage, thus defying the conventional wisdom that ionic liquids can only be used as electrolytes above room temperature. We demonstrate electrical double layer capacitors able to operate from -50 to 100 °C over a wide voltage window (up to 3.7 V) and at very high charge/discharge rates of up to 20 V/s.

Item Type:Article
Additional Information:Thanks to American Chemical Society editor. The definitive version is available at http://pubs.acs.org The original PDF can be found at The Journal of Physical Chemistry Letters website : http://pubs.acs.org/doi/abs/10.1021/jz201065t
HAL Id:hal-00864201
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Aixtron (UNITED KINGDOM)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Drexel University (USA)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Solvionic (FRANCE)
Laboratory name:
Deposited On:20 Sep 2013 13:15

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