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D. Müller, C. Knoll, A. Werner, P. Weinberger:
"Novel materials for thermochemical energy storage - from hydroxides to ammoniates";
Talk: 27th International Conference on Organometallic Chemistry (ICOMC) 2016, Melbourne (Australia); 2016-07-17 - 2016-07-22; in: "Book of abstracts", (2016), 45.

Industrial processes releasing exhaust heat with temperatures up to 450°C would offer a so far neglected potential for reduction of fossil fuel consumption by accessing this notable amounts of energy. A direct utilization as e.g. conversion into electricity is hampered by the economic view-point, but a temporal and local decoupling from the energy generation would allow for usage in low-temperature industrial processes or even long-distance heating. For this purpose materials showing a fully reversible energy uptake with subsequent liberation are highly promising for their applicability as thermochemical energy storage material (TCES-material). We focussed on a systematic investigation on different suitable materials for thermochemical energy storage, using H2O, CO2, SO2, O2 and NH3 as reactive process gas. A crucial point in our materials selection was industrial availability and price. This approach led to a detailed overview on suitability and scope of application for various materials with mentioned reactants. Apart of the individual materials data such as reversibility, cycle-stability, energy output, etc. we were able to assign the specific classes according to process gas and operational temperature profile to possible targeted applications for thermochemical storage materials: Hydrate materials could be suitable for applications in private households and civil environment, oxides would allow for high-performance solar power plants and ammoniates for industrial processes including NH3 as process- or waste gas.
Our contribution will give a detailed overview on TCES-materials identification, their characterization, scope of applicability, first experiments in a reactor and finally also on the issues to be tackled on a further way to commercial applicability.

thermochemical energy storage