Electrochemical and dielectric properties of cobalt doped SnS on cotton based electrodes for potential use in supercapacitors
Mohd Arif Dar, Safwat A. Mahmoud, S.R. Majid, Meenaloshini Satgunam, L. Guganathan, P. Arularasan, M. Karunakaran, S. Sheik Fareed, Hilal Rather, Lamiaa Galal Amin
Abstract
Herein, we synthesize Co-doped SnS nanoparticles (NPs) using a simple solvothermal method. The X-ray diffraction (XRD) spectra determine the orthorhombic structure of the Co-doped SnS NPs. The Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) confirm the rod-like structure of the Co-doped SnS NPs. The surface area of 31, 225, 256 and 383 (m 2 /g) of Co-doped SnS NPs determines their tendency for electrical and supercapacitive properties. The deconvolution curves show the binding energy peaks of Sn, S and Co, confirming the doping of Co ions in the lattice of SnS compound. The 20%Co:SnS electrode retains 94% of its capacitance with a coulombic efficiency of 78% even after 3000 cycles of GCD curves. The SnS XRD peaks observed even after the cyclic stability test of 20%Co:SnS electrode determine the stability of the electrodes. The conductivity values of the AN1, AN2, AN3 and AN4 cotton electrodes are 9.6 × 10 −08 , 3.5 × 10 −07 , 5.8 × 10 −07 and 1.2 × 10 −06 , providing their tendency for future material in dielectric and microelectronic device applications.