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1. Selective Ultrathin Carbon Sheath on Porous SiliconNanowires: Materials for Extremely High Energy Density Planar Micro-Supercapacitors.

Author

Alper, John P., Wang, Shuang, Rossi, Francesca, Salviati, Giancarlo, Yiu, Nicholas, Carraro, Carlo, and Maboudian, Roya

Subjects
*CARBON, *ELECTRIC cable sheathing, *POROUS silicon, *SILICON nanowires, *ENERGY density, *SUPERCAPACITORS
Abstract

Microsupercapacitors are attractiveenergy storage devices forintegration with autonomous microsensor networks due to their high-powercapabilities and robust cycle lifetimes. Here, we demonstrate poroussilicon nanowires synthesized via a lithography compatible low-temperaturewet etch and encapsulated in an ultrathin graphitic carbon sheath,as electrochemical double layer capacitor electrodes. Specific capacitancevalues reaching 325 mF cm–2are achieved, representingthe highest specific ECDL capacitance for planar microsupercapacitorelectrode materials to date. [ABSTRACT FROM AUTHOR]

Published
2014
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