Effect of carbon nanotubes on the capacitance of an ultra-capacitor

The growing demand of energy efficient systems is increasing day by day, therefore hybrid electrical energy storage devices is the need of the hour. In electrically operated vehicles and renewable power generation systems the energy storage is a very critical component. Ultra-capacitors are an emerging technology which can be used in combination with batteries for effective energy storage. It provides high pulse current and better portability essential for modern automotive and various other applications. Carbon nanotubes is emerging as a new electrical energy storage material, therefore there is an urgent need to test carbon nanotubes based composite materials in electrodes of an ultra-capacitor. A low cost ultra-capacitor has been developed using multi-wall carbon nanotubes and metal oxide through modelling approach by considering various parameters to enhance the energy storage capacity of capacitors.