• L.Malleswara Rao
• A P V Appa Rao
• J Rama Mohan
• K Ramnarayana
• Ch. Sundar Singh

Supercapacitors or EDLCs (i.e. electric double-layer capacitors) or ultra-capacitors are becoming increasingly popular as alternatives for the conventional and traditional battery sources. Supercapacitor shares the same fundamental equations as conventional capacitors; to attain higher capacitances supercapacitor uses electrodes having high specific surface area and thinner dielectrics. With these properties it makes them have power densities greater than those of batteries and energy density greater than those of conventional capacitors. Electrochemical capacitors use the double-layer effect to store electric energy; however, this double-layer has no conventional solid dielectric to separate the charges. EDLCs can either store charge electro statically or via non faradic process, which involves no transfer of charge between electrode and the electrolyte. Pseudocapacitors store charge via faradic process which involves the transfer of charge between electrode and electrolyte. The CNT as supercapacitor electrode material due to its unique pore structure, good mechanical and thermal stability and superior electrical properties. Graphene a one atom thick layer 2D structure has emerged as a unique carbon material that has potential for energy storage device applications because of its superb characteristics of high electrical conductivity, chemical stability, and large surface area. Supercapacitors may emerge as the solution for many application-specific power systems. In particular; supercapacitors have great potential for applications that require a combination of high power, short charging time, high cycling stability and long shelf life.

Supercapacitors, Energy Storage Materials, EDLC, Pseudocapacitors, CNTs, Graphene

"ENERGY STORAGE MATERIALS FOR SUPERCAPACITORS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.204-208, June 2019, Available :http://www.jetir.org/papers/JETIR1907J30.pdf

"ENERGY STORAGE MATERIALS FOR SUPERCAPACITORS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp204-208, June 2019, Available at : http://www.jetir.org/papers/JETIR1907J30.pdf