1 research outputs found
Selective Ultrathin Carbon Sheath on Porous Silicon Nanowires: Materials for Extremely High Energy Density Planar Micro-Supercapacitors
Microsupercapacitors are attractive
energy storage devices for
integration with autonomous microsensor networks due to their high-power
capabilities and robust cycle lifetimes. Here, we demonstrate porous
silicon nanowires synthesized via a lithography compatible low-temperature
wet etch and encapsulated in an ultrathin graphitic carbon sheath,
as electrochemical double layer capacitor electrodes. Specific capacitance
values reaching 325 mF cm<sup>–2</sup> are achieved, representing
the highest specific ECDL capacitance for planar microsupercapacitor
electrode materials to date