Thermal dynamic study of the gradual desolvation in submicropores for carbon-based supercapacitor at low temperature

When the supercapacitor (SC) adopts electrolyte with solvent, the desolvation mechanism in the charging process is helpful for the electrode material to adsorb more electrolyte ions and improve the capacitance. However, the desolvation effect is temperature dependent, and it is difficult to achieve at low temperature. In this work, we find that the existence of a large number of submicropores (0.7–2 nm) in activated carbon greatly improves the...