Supercapacitors are energy storage devices that bridge the gap between traditional capacitors and batteries in terms of energy density and power delivery. They store energy by separating positive and negative charges on porous electrodes immersed in an electrolyte solution. Supercapacitors have high power density, rapid charge/discharge capabilities, and a long cycle life compared to batteries. Research in this area aims to improve the energy density, efficiency, and overall performance of supercapacitors for a wide range of applications, including renewable energy storage, electric vehicles, and portable electronics. Key areas of research include developing new electrode materials, optimizing device design, and investigating novel electrolytes and fabrication techniques.