Abstract

For the purpose of calculate and compare the variation in thermal storage density, data for the thermal stability, heat capacity, and density properties of equimolar binary mixtures of 1-octyl-3-methylimidazolium and 1-octyl-2,3-dimethylimidazolium based ionic liquids have been measured. Preliminary analysis of fifteen mixtures obtained from six ionic liquid provide evidence that certain mixtures increase its heat capacity and hence its thermal storage density, offering a viable alternative to materials currently used in solar energy storage. (C) 2019 Elsevier B.V. All rights reserved.