Fabrication of Supercapacitor Devices and Their Real-Time Applications

Supercapacitor is a promising electrochemical energy storage device which possessing very high power density, rapid charge and discharge rates with a very long lifecycle. Supercapacitors hold high energy density as compared to common electrolytic capacitors and hence supercapacitors are extensively utilized not only for powering several portable electronic devices but also plug-in hybrid electric vehicles. Supercapacitor can deliver a huge power within a very short time and hence it has the potential to contribute toward the rapid growth of power electronics such as portable and wearable electronic devices. In this context, the present chapter describes on the design and fabrication of various supercapacitor cells and their potential applications in several sectors like flexible and portable electronics, automobiles and transport, implantable healthcare, biomedical sensor, etc. Besides, the design and development of a bidirectional DC-DC converter by using a battery-supercapacitor hybrid system for electric vehicle applications and hybrid energy management system are briefly explained and highlighted.