About this Journal Submit a Manuscript Table of Contents
Journal of Nanomaterials
Volume 2013 (2013), Article ID 821071, 5 pages
http://dx.doi.org/10.1155/2013/821071
Research Article

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

1Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
2Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China

Received 3 January 2013; Revised 26 January 2013; Accepted 28 January 2013

Academic Editor: Tao Chen

Copyright © 2013 Li Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

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.