Electrical double layers (EDLs) play a key role in energy storage and have been suggested to have applications in energy generation. Recently, there has been an expansion of interest in EDLs, but EDLs with ionic liquid–solvent mixtures (ILSMs) received less attention. Herein, we study the temperature dependence of EDLs with ILSMs, in particular, close to demixing. We demonstrate the emergence of a bird-shaped capacitance, in addition to the well-known camel and bell shapes, which manifests the fine interplay between the electrostatic and wetting properties of ILSMs. We find that the capacitance increases appreciably as the system approaches demixing and this increase is accompanied by a sizeable enhancement of the energy storage, which can be utilized for generating electricity from waste heat.

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We present a fabrication process of low-cost superlattices and simulations related with the heat dissipation on them. The influence of the interfacial roughness on the thermal conductivity of semiconductor/semiconductor superlattices was studied by equilibrium and non-equilibrium molecular dynamics and on the Kapitza resistance of superlattice's interfaces by equilibrium molecular dynamics. The non-equilibrium method was the tool used for the prediction of the Kapitza resistance for a binary semiconductor/metal system. Physical explanations are provided for rationalizing the simulation results.PACS68.65.Cd, 66.70.Df, 81.16.-c, 65.80.-g, 31.12.xv