Pani:Cuo Nanocomposite as Electrolyte Material for Electrochemical Supercapacitor Application

PANI:CuO nanocomposite have been prepared by systematically adding different amounts of ammonium per sulfate as an oxidizing agent. Surface morphology shows the uniform distribution of CuO nanopowders in PANI matrix. TEM study gives the grain size of the as prepare PANI:CuO nanocomposite. FT-IR and UV-Vis studies confirm PANI is present and show the incorporation of CuO in polymer matrix. The data obtained by FT-IR measurements show the possible incorporation of CuO in PANI, rate of most interaction and the conductivity decrease due to the increase of APS content in the formed hybrid composites. A capacitance of polymeric materials is remarkably enhanced due to the synergistic effect between CuO and PANI. Moreover, the composite demonstrates good capacitive and charge/discharge properties.

Experimental investigation of convective heat transfer enhancement using alumina/water and copper oxide/water nanofluids

The nanofluids are widely used for heat transfer applications in the various engineering applications. The nanoparticles dispersed uniformly in the base fluid on proper mixing. In the present study, Al2O3 and CuO nanoparticles were selected and the changes in the heat transfer coefficient were investigated in the complete laminar and discrete points of transition fluid flow through a copper tube with constant heat flux. The heat transfer coefficient was investigated at different loading of Al2O3 and CuO nanopowders ranging from 0.1% to 0.5% of volume concentration in each case for the laminar and transition fluid flow zones, which is then compared with the distilled water as a plain base fluid. It is found that the optimum enhancement in heat transfer is observed at relatively lower volume fraction of nanoparticles ranging between 0.2 to 0.3%.