Abstract

Chemical storage of energy will become more and more important with the increasing use of solar energy. This paper describes chemical storage of solar energy via carbothermic reduction of metal oxides. The resulting elemental metals fulfil the requirements for a chemical storage system to a great extent. The reactions are carried out in the solar high-temperature furnace “HELIOS 2000”. Different analytical tools are used to characterize the resulting products. Metallic aluminium and silicon have been produced successfully.

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