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On-chip micro-supercapacitors for operation in a wide temperature range

Huang, Peihua and Pech, David and Lin, Rongying and McDonough, John K. and Brunet, Magali and Taberna, Pierre-Louis and Gogotsi, Yury and Simon, Patrice On-chip micro-supercapacitors for operation in a wide temperature range. (2013) Electrochemistry Communications, 36. 53-56. ISSN 1388-2481

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Official URL: http://dx.doi.org/10.1016/j.elecom.2013.09.003

Abstract

Onion-like carbon (OLC) based micro-supercapacitor electrodes prepared by electrophoretic deposition (EPD) were combined with a eutectic mixture of ionic liquids (IL), producing a micro-supercapacitor which is able to function from −50 °C to 80 °C. This device was electrochemically characterized by cyclic voltammetry and electrochemical impedance spectroscopy at different scan rates and different temperatures. At 20 °C, a capacitance of 1.1 mF.cm−2 per footprint area of device at 200 mV.s−1 within 3.7 V was measured, hence a specific energy of 15 mJ.cm−2 and a specific power of 240 mW.cm−2. At−50 °C, 76% of the capacitance wasmaintained at 10 mV.s−1 within 3.7 V. By integrating with IL, this micro-supercapacitor can be potentially used in portable electronic devices that are required to work under temperature extremes.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com/science/article/pii/S1388248113003469
HAL Id:hal-00977350
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Drexel University (USA)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Réseau de stockage électrochimique de l’énergie - Energie RS2E (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:11 Apr 2014 06:42

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