[en] Although Lithium-ion batteries for consumer electronics have made substantial advances, supercapacitor also possess very attractive properties such as higher power density, short charging time and long cycle life over repeated cycles which makes them promising candidate for frequency regulators in grids, voltage stabilizers in power lines, military devices, hybrid electrical vehicles, and consumer electronics. Still, researchers in the field of energy storage are focused on improving the energy density of these devices, along with their power density, which will kick-start new innovations in flexible and lightweight electronics