a Paul Scherrer Institute, CH-5232, Villigen-PSI, Switzerland
b ETH, Institute for Crystallography, CH-8092, Zurich, Switzerland
c University of Zurich, Institute for Inorganic Chemistry, CH-8057, Zurich, Switzerland
Abstract:
A two-step thermochemical cycle with the ternary metal oxide system (Fe1 − xMnx)3O4/(Fe1 − xMnx)1 − yO is applied to convert solar energy to chemical energy. Experimental investigations on the water splitting reaction of (Fe1 − xMnx)1 − yO revealed temporary formation of a manganese rich rock salt phase and an iron rich spinel phase due to phase segregation processes.