Supercapacitors (also known as ultracapacitors), a type of capacitor, are energy storing components which have advanced features in comparison to conventional capacitors (electrolytic and ceramic capacitors), such as high energy density, faster charging and discharging, high power density, etc. A supercapacitor is made of electrodes, covered with a layer of activated carbon for increasing its surface area, and an electrolyte which acts as the separator or the dielectric, when compared to a convectional supercapacitor. Technological advancements have led to the introduction of two more types of supercapacitors, i.e. pseudo-capacitors and hybrid capacitors. Since their inception, due to the mixed features of a Li-ion battery and a supercapacitor, a high demand for hybrid capacitors is being witnessed in the market. Supercapacitors have applications across various industry verticals, especially in electronics, automotive and transportation, and energy and power. In addition to this, continuous research and development is under process for further enhancing the features of the product. Owing to this, graphene-based supercapacitors have also been launched in the market, which possess higher charge holding capacity when compared to hybrid capacitors. The market has witnessed considerable traction in the past, and is further expected to witness a boom during the forecast period.