A Brief Review on Electrode Materials for Supercapacitor

摘要

One of the issues recently faced in electrostatic field is storage. With recent advances in this area it hasbecome necessary to find an alternative which lead to emergence of supercapacitor. Supercapacitorshares the same fundamental equations as conventional capacitors; to attain higher capacitancessupercapacitor uses electrodes having high specific surface area and thinner dielectrics. With theseproperties it makes them have power densities greater than those of batteries and energy densitygreater than those of conventional capacitors. Since supercapacitor is mainly a pulse current device itis best used with devices that require high current for short duration of time. Researchers being carriedout now are on how to improve the energy density so that they can be used in wider range ofapplications. The performance of supercapacitor relies on factors such as electrochemical properties ofelectrode materials used, electrolyte and voltage range. However, most researches are focused on thedevelopment of new electrode materials that will yield better performances. In this review paper,storage principle and characteristics of electrode materials such as carbon based materials, metaloxides and conducting polymers in supercapacitors have been reported.