Hybrid supercapacitors bridge the gap between traditional capacitors and batteries by combining the high power density of electrochemical capacitors with the high energy density of batteries. This synergy is achieved through the integration of faradaic and non-faradaic charge storage mechanisms within a single device. Research in this area focuses on developing novel electrode materials, optimizing ion diffusion pathways, and engineering device architectures that enable both fast charge–discharge capability and long cycle life. Hybrid supercapacitors are particularly suited for applications demanding rapid energy delivery and storage stability, from portable electronics to renewable energy integration and electric mobility.