Manganese Oxide on Carbon Fabric for Flexible Supercapacitors

Abstract

We report the fabrication of uniform large-area manganese oxide (MnO2) nanosheets on carbon fabric which oxidized using O2plasma treatment (MnO2/O2-carbon fabric) via electrodeposition process and their implementation as supercapacitor electrodes. Electrochemical measurements demonstrated that MnO2/O2-carbon fabric exhibited capacitance as high as 275 F/g at a scan rate of 5 mV/s; in addition, it showed an excellent cycling performance (less than 20% capacitance loss after 10,000 cycles). All the results suggest that MnO2/O2-carbon fabric is a promising electrode material which has great potential for application on flexible supercapacitors.

Trimetallic Oxides/GO Composites Optimized with Carbon Ions Radiations for Supercapacitive Electrodes

“…There have been various studies aimed at improving the capacitance and energy density of supercapacitors, with a major focus on electrode materials [6][7][8][9]. Two observable phenomena have been observed as the intrinsic mechanism of energy storage in supercapacitors; these involve electronic double layer capacitance (EDLC) and/or pseudocapacitance [10,11]. Carbon materials (activated carbon, carbon aerogels, carbon nanotubes (CNTs) or fibers (CNFs), and graphene) possess a large surface area, and store charges through the EDLC mechanism, which involves the adsorption and desorption of electrolyte ions at the electrode/electrolyte interfaces [12][13][14].…”