ABSTRACT
Polyaniline composite films incorporated with aligned multi-walled carbon nanotubes (MWCNTs) are synthesized through an easy electrodeposition process. These robust and electrically conductive films are found to function as effective electrodes to fabricate transparent and flexible supercapacitors with a maximum specific capacitance of 233 F/g at a current density of 1 A/g. It is 36 times of bare MWCNT sheet, 23 times of pure polyaniline and 3 times of randomly dispersed MWCNT/polyaniline film under the same conditions. The novel supercapacitors also show a high cyclic stability.
ABSTRACT
A general assembly approach is developed to construct hierarchically tunable helical superstructures from an achiral porphyrin-incorporated alkoxysilane. The resulting superstructures can be controlled from film, rice, spindle, ribbon, to fiber in morphology and from nonhelical to helical in structure at a multiscale with excellent optoelectronic, electrical, and thermal properties.
Subject(s)
Porphyrins/chemistry , Silanes/chemistry , Electronics , Furans/chemistry , Nanostructures/chemistry , Optical Devices , StereoisomerismABSTRACT
Metal wires suffer from corrosion in fiber-shaped dye-sensitized solar cells (DSSCs). We report herein that stable, ultrastrong, and highly flexible aligned carbon nanotube fibers can be used not only as catalytic counter electrodes but also as conductive materials to support dye-loaded TiO(2) nanoparticles in DSSCs. The power conversion efficiency of this fiber solar cell can achieve 2.94%. These solar power fibers, exhibiting power conversion efficiency independent of incident light angle and cell length, can be woven into textiles via a convenient weaving technology.
