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Issue 50, 2014
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Novel hybrid micro-supercapacitor based on conducting polymer coated silicon nanowires for electrochemical energy storage

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Abstract

The development of a novel hybrid symmetric micro-supercapacitor based on poly(3,4-ethylenedioxythiophene) coated silicon nanowires using an ionic liquid (N-methyl-N-propylpyrrolidinium bis(trifluoromethylsulfonyl)imide) as an electrolyte has been demonstrated. The hybrid supercapacitor device was able to deliver a specific energy of 10 W h kg−1 and a maximal power density of 85 kW kg−1 at a cell voltage of 1.5 V. The hybrid device exhibited long lifetime and an outstanding electrochemical stability retaining 80% of the initial capacitance after thousands of galvanostatic charge–discharge cycles at a high current density of 1 mA cm−2. The improvement of the capacitive properties compared with the bare SiNWs was attributed to the pseudo-capacitive behavior induced by the conducting polymer coating.

Graphical abstract: Novel hybrid micro-supercapacitor based on conducting polymer coated silicon nanowires for electrochemical energy storage

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Publication details

The article was received on 09 Apr 2014, accepted on 04 Jun 2014 and first published on 04 Jun 2014


Article type: Paper
DOI: 10.1039/C4RA03192J
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Citation: RSC Adv., 2014,4, 26462-26467
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    Novel hybrid micro-supercapacitor based on conducting polymer coated silicon nanowires for electrochemical energy storage

    D. Aradilla, G. Bidan, P. Gentile, P. Weathers, F. Thissandier, V. Ruiz, P. Gómez-Romero, T. J. S. Schubert, H. Sahin and S. Sadki, RSC Adv., 2014, 4, 26462
    DOI: 10.1039/C4RA03192J

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