| Abstract
| - To realize a suitable supercapacitor nanomaterial, the recently developed technique of reaction under autogenicpressure at elevated temperature has been employed by us to synthesize SnO2 hexagonal nanocrystals andSnO2@C nanocomposites. The synthesis at different temperatures (viz. 500, 600, and 700 °C) yields threedifferent composites. Characterization of these composites by various methods confirms the structural (XRD,Raman, FT-IR) and nanoparticulate (TEM, HRTEM) nature of the synthesized materials. TEM studies includingHRTEM reveal that all the synthesized SnO2 and SnO2@C nanomaterials are highly crystalline with hexagonalshape. Cyclic voltammetric studies carried out to examine the capacitance of SnO2@C in 1 M H2SO4 showthat the nanocomposite prepared at 700 °C has a maximum specific capacitance of 37.8 F/g at a scan rate of5 mV/s.
|
