عليرضا سربيشه ئي

With the advancement of technology, the utilization of renewable resources to produce energy and the use of various equipment to store it have become increasingly crucial. In the last few decades, supercapacitors have garnered a great deal of interest among the appropriate instruments for various reasons. The NiCo2S4 material was coated in situ on a nickel substrate using a two-step solvothermal synthesis method, and the effects of solvent agents, the concentration of precursors, and the type and amount of surfactant on the structure, microstructure, and electrochemical properties have been investigated. To assure the accuracy of the synthesis method, materials synthesized under the same conditions were characterized using X-ray diffraction to identify their phase. In addition, the microstructure images of the samples were analyzed using a scanning electron microscope to determine the effect of the aforementioned factors. Various electrochemical tests, including cyclic voltammetry, galvanostatic charge and discharge, and electrochemical impedance spectroscopy, were conducted to eva‎luate the performance of each of the synthesized electrodes. Based on the obtained results, it was determined that the synthesized sample, which utilized specific quantities of nickel nitrate, cobalt nitrate, urea, and ammonium fluoride (0.125, 0.25, 1.5, and 0.5 mmol, respectively), along with a solvent mixture of water and ethanol in a volume ratio of 2:1 during the LDH synthesis stage, and 1 mmol of CTAB surfactant during the sulfidation stage, exhibited superior performance compared to the other samples tested under identical conditions. These previously mentioned experimental conditions appear to be suitable for the purposes of this study. The observed behaviour exhibited a specific capacity of 835 C g-1 or 1856 F g-1 within the voltage range of 0–0.5 volts, as measured against Ag/AgCl, at a current density of 1 ampere/gram. In the experiment, the optimum electrode is in conjunction with the CuCo2S4 electrode as the cathode and anion in an asymmetric supercapacitor. This particular supercapacitor exhibited a power density of 5040 W/kg and an energy density of 23.2 Wh/kg

NiCo2S4 , سنتز سولوترمال , سورفكتانت , سنتز درجا

NiCo2S4 , solvothermal synthesis , Surfactant , in-situ synthesis

Alireza Sarbishei

Masood Hasheminiasari - Seyyed Morteza Masoodpanah