• D Saravanan

Thanks to their unique features such as high power, long cycle life and high power, supercapacitors have gained a lot of popularity. Environment-friendly personality. They serve as a link between a conventional capacitor and the energy-power difference. (High power) and battery/fuel cells (having high energy storage). With this in mind, a global In order to counter this, research has been documented and rapid progress has been made in the development of fundamental as well as applied aspects of supercapacitors. A succinct overview of technologies and technologies is given here. The working principles of various materials used for supercapacitors have been laid down. The primary emphasis was on materials such as nanomaterials based on carbon, metal oxides, polymers and their nanocomposites, MXenes, metal nitrides, covalent organic frameworks, and black phosphorus, along with several novel materials such as metal-organic frameworks. The efficiency of nanocomposites has been evaluated using parameters such as Pressure, capacitance, power, cyclic efficiency and capacity to score. Some of the latest supercapacitors such as electrochromic supercapacitor, battery-supercapacitor hybrid device, electrochemical flow capacitor, alternating current line filtering capacitor, micro-supercapacitor, photo-supercapacitor, thermally chargeable supercapacitor, self-healing supercapacitor, piezoelectric and shape memory supercapacitor have also been discussed. This review covers the up-to-date progress achieved in novel materials for supercapacitor electrodes. The latest fabricated symmetric/asymmetric supercapacitors have also been reported.

Supercapacitor, Materials, Devices, Hybrid, Battery, Capacitance, Electrochromic

"Review of Supercapacitors: Materials and Devices", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.296-298, February-2019, Available :http://www.jetir.org/papers/JETIREO06066.pdf

"Review of Supercapacitors: Materials and Devices", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp296-298, February-2019, Available at : http://www.jetir.org/papers/JETIREO06066.pdf