High-performance nickel sulfide modified electrode material from single-source precursor for energy storage application

• Published in: Journal of materials science. Materials in electronics Vol. 32; no. 15; pp. 20058 - 20070
• Main Authors: Sambathkumar, C., Ranjithkumar, R., Arasi, S. Ezhil, Manikandan, A., Nallamuthu, N., Kumar, M. Krishna, Arivarasan, A., Devendran, P.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.08.2021; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Differential scanning calorimetry; Diffraction patterns; Discharge; Electrochemical analysis; Electrode materials; Electrodes; Electron microscopy; Energy storage; Image transmission; Materials Science; Microscopy; Morphology; Nanoparticles; Nickel; Nickel sulfide; Optical and Electronic Materials; Precursors; Supercapacitors; Thermal stability; Thermogravimetric analysis
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-021-06383-7

High-performance energy storage electrode materials are emerging demand in near future for the construction of supercapacitor with high energy and power densities. Herein, Nickel (II) Diethyldithiocarbamate was used as single-source precursor for Nickel Sulfide (Ni 9 S 8 ) two-dimensional (2D) nanosheets (NSs) preparation and hexadecylamine as shape directing agent via simple solvothermal method. The orthorhombic structure of Ni 9 S 8 NSs was confirmed by X-ray diffraction (XRD) pattern. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images revealed that as-prepared Ni 9 S 8 nanoparticles possess sheet-like morphology. Besides, the thermal stability of Ni(DTC) 2 complex was studied by Thermogravimetric/Derivative Thermogravimetric (TG/DTG) with differential scanning calorimetric (DSC) analysis. The electrochemical properties of Ni 9 S 8 NSs was studied using galvanostatic charge–discharge (GCD) and cyclic voltammetry (CV) techniques. From the charge–discharge study of Ni 9 S 8 NSs, a high specific capacitance of 281 Fg −1 was obtained at a current density of 1 Ag −1 and up to 82% retentivity was achieved after 5000 cycles. Thus, the prepared Ni 9 S 8 NSs could be the one of the attractive potential active electrode materials for the application of supercapacitor.