title: Transparent and flexible supercapacitors with single walled carbon nanotube thin film electrodes.
abstract: We describe a simple process for the fabrication of transparent and flexible, solid-state supercapacitors. Symmetric electrodes made up of binder-free single walled carbon nanotube (SWCNT) thin films were deposited onto polydimethylsiloxane substrates by vacuum filtration followed by a stamping method, and solid-state supercapacitor devices were assembled using a gel electrolyte. An optical transmittance of 82% was found for 0.02 mg of SWCNTs, and a specific capacitance of 22.2 F/g was obtained. The power density can reach to 41.5 kW · kg(-1) and shows good capacity retention (94%) upon cycling over 500 times. Fabricated supercapacitors will be relevant for the realization of transparent and flexible devices with energy storage capabilities, displays and touch screens in particular.
authors.affiliation: Department of Micro and Nanotechnology, Middle East Technical University , Ankara 06800, Turkey.
authors.forename: Recep
authors.initials: R
authors.lastname: Yuksel
authors.forename: Zeynep
authors.initials: Z
authors.lastname: Sarioba
authors.forename: Ali
authors.initials: A
authors.lastname: Cirpan
authors.forename: Pritesh
authors.initials: P
authors.lastname: Hiralal
authors.forename: Husnu Emrah
authors.initials: HE
authors.lastname: Unalan
keywords: flexible; polydimethylsiloxane; single walled carbon nanotubes; supercapacitors; thin film; transparent