Paper Title:
Capacitive Behavior of MnO2 Nanowires Prepared by Hydrothermal Synthesis Method
  Abstract

KMnO4 and MnSO4 were used to prepare MnO2 nanowires for supercapacitors hydrothermal synthesis method. Scanning electron microscope (SEM), N2 adsorption-desorption and X-ray diffraction (XRD) were used to analyze the as prepared MnO2. Electrochemical performance of MnO2 was characterized by cyclic voltammetry and galvanostatic charge/discharge. The results showed that the nanowires were α-MnO2 with a diameter of 30 to 40 nm. The specific surface area and mean pore diameter was 164.5 m2g-1 and 3.1 nm, respectively. In an electrolyte of 1 molL-1 (NH4)2SO4, the MnO2 had typical capacitive characterization in the potential region of –0.4~0.5V(vs. SCE). At a current density of 10 mAcm-2, a specific capacitance of 466 Fg-1 was achieved. Supercapacitors based on the nanowires exhibited high cycling efficiency

  Info
Periodical
Advanced Materials Research (Volumes 152-153)
Edited by
Zhengyi Jiang, Jingtao Han and Xianghua Liu
Pages
1551-1554
DOI
10.4028/www.scientific.net/AMR.152-153.1551
Citation
M. G. Deng, Y. F. Chen, "Capacitive Behavior of MnO2 Nanowires Prepared by Hydrothermal Synthesis Method", Advanced Materials Research, Vols. 152-153, pp. 1551-1554, 2011
Online since
October 2010
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$32.00
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