title: Sonochemically synthesized MnO2 nanoparticles as electrode material for supercapacitors.
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.
authors.affiliation: Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy 620 015, India.
authors.forename: Balasubramaniam
authors.initials: B
authors.lastname: Gnana Sundara Raj
authors.affiliation: Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21413, P.O. Box 80203, Saudi Arabia.
authors.forename: Abdullah M
authors.initials: AM
authors.lastname: Asiri
authors.affiliation: Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21413, P.O. Box 80203, Saudi Arabia.
authors.forename: Abdullah H
authors.initials: AH
authors.lastname: Qusti
authors.affiliation: Department of Environmental Engineering and Science, Feng Chia University, Taichung 407, Taiwan.
authors.forename: Jerry J
authors.initials: JJ
authors.lastname: Wu
authors.affiliation: Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy 620 015, India. Electronic address: sanand@nitt.edu.
authors.forename: Sambandam
authors.initials: S
authors.lastname: Anandan
keywords: Amorphous materials; Electrochemical properties; Energy storage; Sonochemical synthesis; Supercapacitor; X-ray diffraction