| Literature DB >> 24360990 |
Balasubramaniam Gnana Sundara Raj1, Abdullah M Asiri2, Abdullah H Qusti2, Jerry J Wu3, Sambandam Anandan4.
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.Entities:
Keywords: Amorphous materials; Electrochemical properties; Energy storage; Sonochemical synthesis; Supercapacitor; X-ray diffraction
Year: 2013 PMID： 24360990 DOI： 10.1016/j.ultsonch.2013.11.018
Source DB: PubMed Journal: Ultrason Sonochem ISSN： 1350-4177 Impact factor: 7.491