Power generation and storage in electronics require flexible, thin micro-electrochemical energy storage/conversion systems. Micro-supercapacitors (mSCs) 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 mSC 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 mSC which operates at 3 V above RT up to 80 C with a capacitance density approaching 10 F/cm3 and delivering maximum specific energy and power densities of 10 mWh/cm3 and 8-10 W/ cm3 with long cycling stability over 2. 10^4 cycles is here reported and discussed.
Flexible, ionic liquid-based micro-supercapacitor produced by supersonic cluster beam deposition / Bettini, L.G.; Piseri, P.; De Giorgio, F.; Arbizzani, C.; Milani, P.; Soavi, F.. - In: ELECTROCHIMICA ACTA. - ISSN 0013-4686. - STAMPA. - 170:(2015), pp. 57-62. [10.1016/j.electacta.2015.04.068]
Flexible, ionic liquid-based micro-supercapacitor produced by supersonic cluster beam deposition
DE GIORGIO, FRANCESCA;ARBIZZANI, CATIA;SOAVI, FRANCESCA
2015
Abstract
Power generation and storage in electronics require flexible, thin micro-electrochemical energy storage/conversion systems. Micro-supercapacitors (mSCs) 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 mSC 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 mSC which operates at 3 V above RT up to 80 C with a capacitance density approaching 10 F/cm3 and delivering maximum specific energy and power densities of 10 mWh/cm3 and 8-10 W/ cm3 with long cycling stability over 2. 10^4 cycles is here reported and discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
