“…Owing to the growing need for energy-efficient and environmentally friendly products, considerable research effort has recently been dedicated to the development of supercapacitors (SCs) , given that their capacity and charging/discharging rate substantially exceed those of the conventional capacitors and batteries, respectively. , At present, SCs are mostly utilized in low-power load applications, such as video recorders, mobile phones, and notebook computers, but can also be employed under high-power load conditions commonly encountered in electric vehicle power systems. , As their energy storage performance primarily depends on the type of the electrolyte used, a wide range of electrolytes have been considered in both research and practice. The findings yielded indicate that conventional liquid electrolytes, while possessing high ionic conductivity, have several drawbacks, such as difficult packaging, easy leakage, low reliability, corrosion, toxicity, and poor low-temperature performance. − Even though these issues can be mitigated by using solid electrolytes, the ionic conductivity will still remain low, thus compromising the electrochemical function of the whole device. − …”