In this project the thermal properties of salt based PCMs and their composites will be investigated. The focus will be on screening materials, understanding of the statistical-thermodynamic background of melting trajectories and tuning these trajectories by adapting the composition. The project will consist of three parts. First you will start with a literature study where you will map out the pre-existing knowledge on inorganic PCM composites and melting trajectories. Second, based on that, you will select and design a series of composites that you will experimentally test after which you will iteratively adapt the PCM composition. Third, you will design a method to test the most promising material on a larger scale (a few grams compared to milligrams in the second step). This can be supplemented with calculations or simulations in, for example, COMSOL, to further guide the material optimization process. The primary techniques you will use during the initial screening are differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). They will be coupled with other analytical techniques. The work will be executed in close collaboration with the Applied Physics department at TU Eindhoven.