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Title: Microwave synthesis and electrochemical characterization of Mn/Ni mixed oxide for supercapacitor application

Nanostructured Mn/Ni mixed metal oxide was synthesized at ambient temperature by facile microwave irradiation technique. The crystal structure and surface morphology were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. X-ray diffraction analysis confirmed the formation of Mn/Ni mixed oxide in rhombohedral phase and the grain size calculated was found to be 87 nm. The irregular spherical morphology of the prepared sample was exhibited by the SEM images. The characteristic peaks of FTIR at about 630 cm{sup −1} and 749 cm{sup −1} were attributed to the Mn-O and Ni-O stretching vibrations respectively. The presence of both Mn and Ni in the prepared sample was validated by the EDS spectra which in turn confirmed the formation of mixed oxide. Cyclic voltammetry and galvanostatic chargedischarge measurements were employed to investigate the electrochemical performance of the mixed oxide. The cyclic voltammetry curves demonstrated good capacitive performance of the sample in the potential window −0.2V to 0.9V. The charge discharge study revealed the suitability of the prepared mixed oxide for the fabrication of supercapacitor electrode.
Authors:
;  [1] ; ;  [2]
  1. School of Physics, Madurai Kamaraj University, Madurai-625021, Tamil Nadu (India)
  2. Department of Nanoscience and Technology, Alagappa University, Karaikudi-630003, Tamil Nadu (India)
Publication Date:
OSTI Identifier:
22490341
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DIAGRAMS; ELECTROCHEMISTRY; FOURIER TRANSFORMATION; GRAIN SIZE; INFRARED SPECTRA; IRRADIATION; MANGANESE OXIDES; MICROWAVE RADIATION; MORPHOLOGY; NANOSTRUCTURES; NICKEL OXIDES; SCANNING ELECTRON MICROSCOPY; SURFACES; SYNTHESIS; TRIGONAL LATTICES; VOLTAMETRY; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY