A research team at the University of Busing in South Korea recently found that cobalt sulfide electrodes prepared using ethanol as a solvent exhibit superior capacitive properties and can be used as supercapacitors.
The research team used water, ethanol, and a mixture of the two as solvents to make different cobalt sulfide electrodes. They used X -ray diffraction, X -ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy to analyze the crystal properties, chemical states and surface morphology of cobalt sulfide nanoparticles in different solvents, and used cyclic voltammetry and constant current. The electrochemical properties of the cobalt sulfide electrode were evaluated by methods such as charge and discharge and electrochemical impedance spectroscopy. The results show that the cobalt sulfide electrode using ethanol as a solvent exhibits the best capacitance characteristics.
The researchers believe that the cobalt sulfide electrode prepared by using ethanol as a solvent has a more suitable surface morphology due to the ethanol solvent, and ions in the electrolyte are more likely to diffuse into the interior of the electrode, and the conductivity is increased, thereby exhibiting the characteristics of the supercapacitor.
New research proves that cobalt sulfide nanoparticles will have broad application prospects in the fields of photocatalysis, electrocatalysis, water decomposition and solar cells, as well as various energy storage devices. It is a superior anode material for making super capacitors.
SHENZHEN CHONDEKUAI TECHNOLOGY CO.LTD , https://www.szfourinone.com