Sonochemically synthesized MnO2 nanoparticles as electrode material for supercapacitors

Balasubramaniam Gnana Sundara Raj; Abdullah M Asiri; Abdullah H Qusti; Jerry J Wu; Sambandam Anandan

doi:10.1016/j.ultsonch.2013.11.018

Sonochemically synthesized MnO2 nanoparticles as electrode material for supercapacitors

Ultrason Sonochem. 2014 Nov;21(6):1933-8. doi: 10.1016/j.ultsonch.2013.11.018. Epub 2013 Dec 8.

Authors

Balasubramaniam Gnana Sundara Raj¹, Abdullah M Asiri², Abdullah H Qusti², Jerry J Wu³, Sambandam Anandan⁴

Affiliations

¹ Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy 620 015, India.
² Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21413, P.O. Box 80203, Saudi Arabia.
³ Department of Environmental Engineering and Science, Feng Chia University, Taichung 407, Taiwan.
⁴ Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy 620 015, India. Electronic address: sanand@nitt.edu.

PMID: 24360990
DOI: 10.1016/j.ultsonch.2013.11.018

Abstract

In this study, manganese oxide (MnO2) nanoparticles were synthesized by sonochemical reduction of KMnO4 using polyethylene glycol (PEG) as a reducing agent as well as structure directing agent under room temperature in short duration of time and characterized by powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Scanning electron microscope (SEM), Transmission electron microscopy (TEM) and Brunauer-Emmett-Teller (BET) analysis. A supercapacitor device constructed using the ultrasonically-synthesized MnO2 nanoparticles showed maximum specific capacitance (SC) of 282Fg(-1) in the presence of 1M Ca(NO3)2 as an electrolyte at a current density of 0.5mAcm(-2) in the potential range from 0.0 to 1.0V and about 78% of specific capacitance was retained even after 1000 cycles indicating its high electrochemical stability.

Keywords: Amorphous materials; Electrochemical properties; Energy storage; Sonochemical synthesis; Supercapacitor; X-ray diffraction.

Publication types

Research Support, Non-U.S. Gov't