SiNWs-based electrochemical double layer micro-supercapacitors with wide voltage window (4V) and long cycling stability using a protic ionic liquid electrolyte
Aradilla, David (Université Grenoble Alpes)
Gentile, Pascal (Université Grenoble Alpes)
Ruiz, Vanesa (Institut Català de Nanociència i Nanotecnologia)
Gómez-Romero, Pedro 1959- (Institut Català de Nanociència i Nanotecnologia)
Wimberg, Jan (IOLITEC Ionic Liquids Technologies GmbH)
Iliev, Boyan (IOLITEC Ionic Liquids Technologies GmbH)
Schubert, Thomas J. S. (IOLITEC Ionic Liquids Technologies GmbH)
Sadki, Saïd (Université Grenoble Alpes)
Bidan, Gérard (INAC)

Date:	2015
Abstract:	The present work reports the use and application of a novel protic ionic liquid (triethylammonium bis(tri fluoromethylsulfonyl)imide; NEtH TFSI) as an electrolyte for symmetric planar micro-supercapacitors based on silicon nanowire electrodes. The excellent performance of the device has been successfully demonstrated using cyclic voltammetry, galvanostatic charge-discharge cycles and electrochemical impedance spectroscopy. The electrochemical characterization of this system exhibits a wide operative voltage of 4 V as well as an outstanding long cycling stability after millions of galvanostatic cycles at a high current density of 2 mA cm. In addition, the electrochemical double layer micro-supercapacitor was able to deliver a high power density of 4 mWcm in a very short time pulses (a few ms). Our results could be of interest to develop prospective on-chip micro-supercapacitors using protic ionic liquids as electrolytes with high performance in terms of power and energy densities.
Grants:	European Commission 309143
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Advances in Natural Sciences: Nanoscience and Nanotechnology, Vol. 6, Núm. 1 (March 2015) , art. 15004, ISSN 2043-6262

DOI: 10.1088/2043-6262/6/1/015004

7 p, 743.4 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles