Exploitation of thermochemical cycles based on solid oxide redox systems for thermochemical storage of solar heat. Part 4: Screening of oxides for use in cascaded thermochemical storage concepts

Thermal cycling tests with the Co3O4/CoO and Mn3O4/Mn2O3 powders operating together under the conditions required for complete oxidation of the less “robust” Mn3O4/Mn2O3, demonstrated that both powders can be reduced and oxidized in complementary temperature ranges, extending thus the temperature operation window of the whole storage cascade.