Electrochemical characteristics of manganese oxide electrodes prepared by an immersion technique

Original Paper


In order to control the amount of manganese oxide coated onto a graphite surface, immersion durations were varied. A maximum capacitance of 490 mF cm−2 was obtained in 0.5 M NaCl and using an immersion time of 20 min and a current of 1 mA. In addition, for the manganese oxide electrode, the lower the current, the higher the capacitance and the higher the immersion time, the higher the resistance. Furthermore, the chronopotentiometric (CP) charge–discharge curves were symmetrical and featured similar isosceles triangles, which demonstrate high electrochemical reversibility and good stability. Cyclic voltammograms of the manganese oxide electrode demonstrate that its operational stability is high.


Manganese oxide Immersion Chronopotentiometry Electrochemical capacitors 



Financial support by the National Science Council of the Republic of China (under grant no. NSC 93-2622-E-224-002-CC3) is gratefully acknowledged.


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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.Department of Chemical & Materials EngineeringNational Yunlin University of Science and TechnologyDouliuTaiwan

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