A supercapacitor, also called an ultracapacitor or electrochemical capacitor, is an energy-storage device that provides very high capacitance compared to conventional capacitors. It bridges the gap between electrolytic capacitors and rechargeable batteries. It stores electrical energy through electrostatic and electrochemical mechanisms, allowing rapid charging and. . Supercapacitors (SCs) are an emerging energy storage technology with the ability to deliver sudden bursts of energy, leading to their growing adoption in various fields.