STUDY OF SUPERCAPACITIVE BEHAVIORS OF Co AND Fe DOPED MANGANESE OXIDES PREPARED BY ANODIC ELECTRODEPOSITION

Le Thi Thu Hang, Ngo Duc Tung, Nguyen Thi Lan Anh, Mai Thanh Tung
Author affiliations

Authors

  • Le Thi Thu Hang Hanoi University of Science and Technology
  • Ngo Duc Tung Hung Yen University of Technology and Education
  • Nguyen Thi Lan Anh Viet Tri University of Industry
  • Mai Thanh Tung Hanoi University of Science and Technology

DOI:

https://doi.org/10.15625/2274

Abstract

Supercapacitive behavior of Co and Fe doped manganese oxide films prepared by anodic deposition were characterized using cyclic voltammetry (CV) and impedance spectroscopy (EIS). Results showed that the highest specific capacitance of 186.2 F/g and stability of 84% obtained with Co doped manganese oxide after scaning 500 cycles. For Fe doped manganese oxide, those parameters were 298.4 F/g and 83%, respectively. The Co, Fe doped manganese oxide film-coated electrodes showed ideal pseudocapacitive behaviors. The appearance of Co and Fe decreased diffuse resistance and charge transfer resistance of the film. They also increased electric double layer capacitance and capacitor response frequency.

Keywords: Binary oxide, supercapacitor, manganese dioxide.

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Published

15-08-2012

How to Cite

Thu Hang, L. T., Tung, N. D., Lan Anh, N. T., & Tung, M. T. (2012). STUDY OF SUPERCAPACITIVE BEHAVIORS OF Co AND Fe DOPED MANGANESE OXIDES PREPARED BY ANODIC ELECTRODEPOSITION. Vietnam Journal of Chemistry, 49(2). https://doi.org/10.15625/2274

Issue

Vol. 49 No. 2 (2011)

Section

Articles