MnO2 nanowires-decorated carbon fiber cloth as electrodes for aqueous asymmetric supercapacitor

Manganese dioxide nanowires (MnO2 NWs) anchored on carbon fiber cloth (CFC) were fabricated through a simple hydrothermal reaction and used as integrated electrodes for supercapacitor. The morphology-dependent electrochemical performance of MnO2 NWs was confirmed, yielding good capacitance performance with a high specific capacitance of 3.88 F . cm(-2) at a charge discharge current density of 5 mA . cm(-2) and excellent stability of 91.5% capacitance retention after 3000 cycles. Moreover, the composite electrodes were used to fabricate supercapacitors, which showed a high specific capacitance of 194 mF . cm(-2) at a charge-discharge current density of 2 mA . cm(-2) and high energy density of 0.108 mWh . cm(-2) at power density of 2 mW . cm(-2), foreboding its potential application for high-performance supercapacitor.