Electrochemical properties of microwave-assisted reflux-synthesized Mn 3 O 4 nanoparticles in different electrolytes for supercapacitor applications

Sankar Kalimuthu; Kalpana D.; Selvan Ramakrishnan

doi:10.1007/s10800-012-0424-2

$The nanosized Mn 3 O 4 particles were prepared by microwave-assisted reflux synthesis method. The prepared sample was characterized using various techniques such as X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), Raman analysis, and transmission electron microscopy (TEM). Electrochemical properties of Mn 3 O 4 nanoparticles were investigated using cyclic voltammogram (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charge–discharge analysis in different electrolytes such as 1 M KCl, 1 M Na 2 SO 4 , 1 M NaNO 3 , and 6 M KOH electrolytes. XRD pattern reveals the formation of single-phase Mn 3 O 4 nanoparticles. The FT-IR and Raman analysis also assert the formation of Mn 3 O 4 nanoparticles. The TEM image shows the spherical shape particles with less than 50 nm sizes. Among all the electrolytes, the Mn 3 O 4 nanoparticles possess maximum specific capacitance of 94 F g −1 in 6 M KOH electrolyte calculated from CV. The order of capacitance obtained by various electrolytes is 6 M KOH > 1 M KCl > 1 M NaNO 3 > 1 M Na 2 SO 4 . The EIS and galvanostatic charge–discharge results further substantiate with the CV results. The cycling stability of Mn 3 O 4 electrode reveals that the prepared Mn 3 O 4 nanoparticles are a suitable electrode material for supercapacitor application.$

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Electrochemical properties of microwave-assisted reflux-synthesized Mn 3 O 4 nanoparticles in different electrolytes for supercapacitor applications

Kalimuthu, Sankar; D., Kalpana; Ramakrishnan, Selvan

Follow Journal of Applied Electrochemistry , Volume 42 (7) Springer Journals – Jul 1, 2012

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Electrochemical properties of microwave-assisted reflux-synthesized Mn 3 O 4 nanoparticles in different electrolytes for supercapacitor applications

Kalimuthu, Sankar; D., Kalpana; Ramakrishnan, Selvan

Follow Journal of Applied Electrochemistry , Volume 42 (7) Springer Journals – Jul 1, 2012

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