Operation of an electrode made of electrolytic nickel sulfi de in a prototype electrochemical capacitor with potassium hydroxide solutions of various concentrations was studied by cyclic voltammetry.The growing demand for power sources for modern communication facilities and transportation require that a power source should combine high stored energy with high output power. These requirements are satisfi ed by hybrid systems combining rechargeable batteries of the type of lithium-ion intercalation systems and electrochemical capacitors (supercapacitors) of the type of Faraday pseudo-capacitors or capacitors of nonFaraday double-layer nature. The interest in components of hybrid systems and, in particular, electrochemical capacitors and materials for their electrodes is increasing.Electrolytic (e) sulfi des of transition metals (M = Co, Ni, Fe) attract attention as electrode materials capable of providing satisfactory discharge characteristics in thin-layer model lithium batteries [1]. It has been shown that semiconducting metal-sulfi de material (amorphous sulfi de CoS x , synthesized by the hydrothermal method) can also be used in electrodes of an electrochemical capacitor (EC). It is known that the electrochemical characteristics of electrode materials depend on methods of their fabrication. We studied whether a number of electrolytically produced transition metal sulfi des are suitable for ECs. In this communication, we present results of testing of electrolytic nickel sulfi de in a prototype electrochemical capacitor with an alkaline solution.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.