Power generation and storage in electronics require flexible, thin micro-electrochemical energy storage/conversion systems. Micro-supercapacitors (μSCs) with double-layer capacitance carbon electrodes are attracting much attention for their capability of delivering short power pulses with high stability over repeated charge/discharge cycling. Supersonic Cluster Beam Deposition (SCBD) is an effective strategy for the development of nanostructured, binder-free porous carbon electrodes on temperature sensitive substrates including polymers. We exploited SCBD for the development of a flexible, planar μSC featuring nanostructured carbon (ns-C) electrodes deposited on a plastic Mylar substrate and N-trimethyl-N-propyl-ammonium bis(trifluoromethanesulfonyl) imide (N<inf>1113</inf>TFSI) ionic liquid electrolyte. The electrochemical performance at different temperatures of the μSC which operates at 3 V above RT up to 80°C with a capacitance density approaching 10 F cm<sup>-3</sup> and delivering maximum specific energy and power densities of 10 mWh cm<sup>-3</sup> and 8-10 W cm<sup>-3</sup> with long cycling stability over 2 × 10<sup>4</sup> cycles is here reported and discussed.

Flexible, ionic liquid-based micro-supercapacitor produced by supersonic cluster beam deposition / L.G. Bettini, P. Piseri, F. De Giorgio, C. Arbizzani, P. Milani, F. Soavi. - In: ELECTROCHIMICA ACTA. - ISSN 0013-4686. - 170(2015 Jul 10), pp. 24821.57-24821.62.

Flexible, ionic liquid-based micro-supercapacitor produced by supersonic cluster beam deposition

L.G. Bettini
Primo
;
P. Piseri
Secondo
;
P. Milani
Penultimo
;
2015

Abstract

Power generation and storage in electronics require flexible, thin micro-electrochemical energy storage/conversion systems. Micro-supercapacitors (μSCs) with double-layer capacitance carbon electrodes are attracting much attention for their capability of delivering short power pulses with high stability over repeated charge/discharge cycling. Supersonic Cluster Beam Deposition (SCBD) is an effective strategy for the development of nanostructured, binder-free porous carbon electrodes on temperature sensitive substrates including polymers. We exploited SCBD for the development of a flexible, planar μSC featuring nanostructured carbon (ns-C) electrodes deposited on a plastic Mylar substrate and N-trimethyl-N-propyl-ammonium bis(trifluoromethanesulfonyl) imide (N1113TFSI) ionic liquid electrolyte. The electrochemical performance at different temperatures of the μSC which operates at 3 V above RT up to 80°C with a capacitance density approaching 10 F cm-3 and delivering maximum specific energy and power densities of 10 mWh cm-3 and 8-10 W cm-3 with long cycling stability over 2 × 104 cycles is here reported and discussed.
micro-supercapacitor; flexible supercapacitor; supersonic cluster beam deposition; porous carbon; ionic liquid
Settore FIS/03 - Fisica della Materia
10-lug-2015
Centro Interdisciplinare Materiali ed Interfacce Nanostrutturati - CIMAINA
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/287260
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