Paper Title:
A Comparative Study of Potentiostatic and Potentiodynamic Method in the Synthesis of MnO2 Films for Electrochemical Capacitors
  Abstract

Nanostructured ε-manganese dioxide films are deposited directly on three-dimensional nickel foam (NF) from 0.25 M Mn(CH3COO)2 by means of the potentiostatic method (PSM) and potentiodynamic method (PDM). The prepared MnO2 films are characterized by X-ray diffraction and scanning electron microscopy. The electrochemical properties of MnO2 films are investigated by cyclic voltammetry (CV), charge-discharge tests, and alternating current (AC) impedance spectroscopy. The results show that the PSM-MnO2 films exhibit higher specific capacitance and better high-rate discharge ability, which are more promising for applications in supercapacitor than PDM-MnO2 films. The specific capacitance of PSM-MnO2 films is about 664 F g-1 at 5.5 A g-1, which is higher than many reported values.

  Info
Periodical
Advanced Materials Research (Volumes 239-242)
Edited by
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
Pages
501-505
DOI
10.4028/www.scientific.net/AMR.239-242.501
Citation
L. B. Kong, R. J. Bai, Y. C. Luo, L. Kang, "A Comparative Study of Potentiostatic and Potentiodynamic Method in the Synthesis of MnO2 Films for Electrochemical Capacitors", Advanced Materials Research, Vols. 239-242, pp. 501-505, 2011
Online since
May 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Zhan Jun Yu, Ying Dai, Wen Chen
Abstract:Co3O4 microspheres were synthesized by hydrothermal-precipitation method using NH3•H2O, H2O2, n-butanol and polyethylene glycol as...
280
Authors: Ya Kun Zhang, Jian Ling Li, Fei Gao, Xin Dong Wang
Abstract:A layer of MnO2 was loaded between the SnO2/Ti substrate and the layer of PANI via a potentiodynamic electrodeposition....
1372
Authors: Zhi Guo Ye, Xian Liang Zhou, Hui Min Meng, Xiao Zhen Hua, Ying Hu Dong, Ai Hua Zou
New Energy Materials
Abstract:Nanostructured elements, including: manganese-molybdenum (Mn-Mo) oxide, manganese-molybdenum-tungsten (Mn-Mo-W) oxide,...
1290
Authors: Jing Li, Hua Qing Xie, Yang Li
Chapter 9: New Energy Materials
Abstract:Nanocomposites supercapacitors electrodes are synthesized by homogeneously coating the nano-structured polypyrrole (PPy) on multi-walled...
1415
Authors: Fen Ran, Ling Ren Wang, Lei Zhao, Yong Tao Tan, Ling Bin Kong, Long Kang
Chapter 6: Composite Materials
Abstract:Mn3O4/Cr2O3 composite materials were prepared by a chemical coprecipitation method. The...
555