Electrochemical Synthesis of CuS Thin Film for Supercapacitor Application

摘要

In present research,walnut like copper sulfide is prepared via a facile single-step potentiostatic electrodeposition method on conducting stainless steel substrate.The walnut like morphology of copper sulfide thin film lies of microplates and further microplates converted to nanogranuals,by means of a change in deposition time and thickness.Copper sulfide thin film electrode reveals a specific capacitance of 132 F g~(-1)at 50 mA cm~(-2).The film thickness changes with deposition time.The films acquire maximum thickness of 610 nm for 25 min of deposition.X-ray diffraction analysis revels that the CuS thin films is polycrystalline in nature and the crystallite size is 29 nm.The peak at 612 cm~(-1)in the Fourier transform infrared spectroscopy spectra confirms the formation of CuS.The wettability study shows the hydrophilic nature,the contact angle of water with CuS electrode is 66°,and the charge transfer resistance of CuS electrode is 7.78 Ω.