All-solid-state flexible supercapacitors based on a carbon/MnO
2 (C/M) core鈥搒hell fiber structure were fabricated with high electrochemical performance such as high rate capability with a scan rate up to 20 V s
鈥?, high volume capacitance of 2.5 F cm
鈥?, and an energy density of 2.2 脳 10
鈥? Wh cm
鈥?. By integrating with a triboelectric generator, supercapacitors could be charged and power commercial electronic devices, such as a liquid crystal display or a light-emitting-diode, demonstrating feasibility as an efficient storage component and self-powered micro/nanosystems.
Keywords:
carbon; MnO2; core鈭抯hell fiber; supercapacitor; energy storage