Hybrid supercapacitorsHybrid supercapacitors have gained widespread attention due to their electrochemical performance features, which include high-energy and high-power densities, resulting from the combination of electric double-layer capacitance and battery-type electrodes. Thus, these devices play a crucial role in bridging the gap between high-power-density conventional supercapacitors and high-energy density batteries. In this chapter, we provide a review of the progress made with hybrid supercapacitor devices, with an emphasis on the electrode materials, their synthesis, and their applications in hybrid supercapacitors. We first highlight the differences between the various types of electrodes commonly used in supercapacitors, as classified by their charge storage mechanisms. We then give detailed accounts of some of the electric double-layer capacitance-typeElectric Double-Layer Capacitance (EDLC) and battery-type electrode materials used in hybrid supercapacitorsAsymmetric design andNanostructures summarizeFaradaic redox reactions the numerous works reported on hybrid supercapacitors based on such materials.