The Preparation of Carbon Nanotube/MnO2 Composite Fiber and Its Application to Flexible Micro-Supercapacitor

• Main Authors: Li Li, Chen Chen, Jing Xie, Zehuai Shao, Fuxin Yang
• Format: Article
• Language: English
• Published: Hindawi Limited 2013-01-01
• Series: Journal of Nanomaterials
• Online Access: http://dx.doi.org/10.1155/2013/821071

In recent years, flexible electronic devices pursued for potential applications. The design and the fabrication of a novel flexible nanoarchitecture by coating electrical conductive MWCNT fiber with ultrathin films of MnO2 to achieve high specific capacitance, for micro-supercapacitors electrode applications, are demonstrated here. The MWCNT/MnO2 composite fiber electrode was prepared by the electrochemical deposition which was carried out through using two different methods: cyclic voltammetry and potentiostatic methods. The cyclic voltammetry method can get “crumpled paper ball” morphology MnO2 which has bigger specific capacitances than that achieved by potentiostatic method. The flexible micro-supercapacitor was fabricated by twisting two aligned MWCNT fibers and showed an area specific capacitance of 2.43 mF/cm2. The flexible micro-supercapacitors also enable promising applications in various fields.