The Subtask 2T focuses on the development of improved TCM materials, which are based on sorption (micro/mesoporous solids and liquids (hydroxides)), chemical reactions (salt hydrates and metal oxides/hydroxides) and combinations (zeolites / graphite + salt hydrates / metal). The activities of the Subtask 2T include the listing of new and improved existing materials, determination of material properties, measurement of thermo-physical properties and expanding the database implemented within the previous task.