Novel Thermogravimetric Characterization Method for Adsorption Cycles of TCM

The ongoing process of thermochemical material development for improved thermal storage applications relies on flexible material characterization in terms of storage capacity, mechanical stability and cycling durability. This work purposes a time-efficient thermogravimetric method and the corresponding setup to characterize thermochemical materials in gram-scale batches. Beside validation of the method on the common sorbents, the applicability of the measurement setup and routines on self-produced composites inhabiting salthydrates in granular and pellet form are addressed. Further, accelerated cycling experiments are performed on the composites. The measurement method is found to be applicable for determining the sorption capacity and longterm cycling stability of thermochemical storage materials within inherent technological limits. Keywords—thermogravimetric characterization, adsorption, characteristic curves, salt-hydrate composites,