International Science and Technology Journal

The storage of electrical energy is the transformation of electrical energy, whether in the electricity network or obtained from other sources, into a form that can be stored and then converted again when electricity is needed. Energy storage technologies, according to stored energy, are classified into electrical, electrochemical, mechanical, thermal, chemical and thermal chemical technologies. Electrical storage technologies include capacitors/super capacitors and super magnetic coils, and storage technologies. Electrochemical storage technologies include batteries and flow cells. Mechanical storage technologies include energy storage systems known as flywheels and potential energy storage systems, either in the form of pumped water or in the form of compressed air. Thermal energy storage technologies include low temperature thermal storage systems, high temperature thermal storage systems, Chemical storage techniques include hydrogen cells, and chemical thermal storage techniques include solar fuels. As a result of the vast majority of different storage technologies, the focus of this paper was on electrical and electrochemical storage techniques. This paper focuses on electrical storage systems and electrochemical energy storage systems. These two technologies have been defined in terms of their principle of operation, characteristics and applications, and comparison between them.