Soft Matter and Complex Systems Seminar

Electric double layers (EDLs) play an important role in energy storage. Recently, there has been an expansion on interest in EDLs, but EDLs with ionic liquid-solvent mixtures received less attention. Thus, we study the temperature dependence of EDLs with ionic liquid mixtures close to demixing. We present the emergence of a new type of capacitance shape, in addition to the well-known camel and bell shapes. We find that the capacitance increases as the system approaches demixing and this increase is accompained by an enhancement of the energy storage.