Electrochemical Properties of Electrodeposited MnO2 Nanoparticles

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Abstract

The present study shows the electrodeposition of MnO2 from KMnO solution and its electrochemical studies. XRD and FESEM analyses showed the electrodeposited MnO2 had nano-sized particle of 18 nm. The electrochemical properties had been investigated using the cyclic voltammetry, galvanostatic charge/discharge and impedance techniques in 1 M Na as electrolyte. The electrodeposited MnO showed good electrochemical behavior with high specific capacitance value of ca. 326 F g2-1. Moreover, it showed high capacitance stability of 84% over 1750 charge/discharge cycles as well as high columbic efficiency of 94 %. Impedance spectra showed low solution and charge transfer resistances, an indication of the conductive nature for the electrodeposited film.

Item Type:	Article
Uncontrolled Keywords:	Cyclic Voltammetry, Electrochemical, Electrodeposition, MnO2
Subjects:	Q Science > QD Chemistry
Faculty/Division:	Faculty of Industrial Sciences And Technology
Depositing User:	Noorul Farina Arifin
Date Deposited:	16 Dec 2014 04:44
Last Modified:	26 Jul 2018 03:29
URI:	http://umpir.ump.edu.my/id/eprint/7776
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