Electrical and chemical stability of CuS nanofluids for conductivity of water soluble based nanocomposites

Abstract Nanofluids which is suitable for the use of coolants in electrically active thermal such as fuel cells, for which both thermal and electrical conductivities are the key parameters to be optimized. In the present work shows the successfully prepared copper sulphide (CuS) nanoparticles by co-precipitation method. As-prepared CuS nanoparticles was dispersed in to deionized water with several concentrations (0.001–0.0038 wt.%) and observed the fluid stability after the three days, the electrical conductivity of nanofluids increases almost linearly with respect to temperature. The concentration reviles the enhancement of electrical conductivity of nanofluids were utmost electrical conductivity of 72.9 μS/cm was obtained at 55 oC with the concentration of 0.0038 wt%. Therefore, the improvement of electrical conductivity which is nanofluids decreased rapidly from 2847% to 1925% attributable to rise in temperature variation of 30 oC–55 oC respectively.