Defect-induced activity of (La0.6-xCexSr0.4)(CeyMn1-y)O3, a promising perovskite redox material class for solar thermochemical CO2 splitting
Solar thermochemical CO2/H2O splitting has the potential to generate industrial scale synthetic liquid fuels and reduce global warming emissions. However, material innovations that can overcome thermodynamic limitations of current class of redox materials are required to increase efficiencies. Perovskites oxide materials are currently emerging as alternate class of redox materials to ceria, mainly because of its thermodynamic and structural tuning derived through engineered composition. Here we have identified a novel class of Ce-substituted perovskite redox materials La0.6Sr0.4MnO3(LSM), which can overcome the individual limitations of ceria and perovskites. Amongst them, 25% Ce-substituted La0.6Sr0.4MnO3 displayed 3 times higher reduction extent than pure ceria and 2 times faster re-oxidation kinetics than pure LSM perovskite during TGA redox cycling experiments at lower reduction temperatures (1673 K). The experiment involves the use of D2B neutron diffractometer under high temperature reaction conditions (1623 K) aimed to elucidate the defect-induced activity correlation, along with determining exact occupanices of Ce at A-site at B-site & monitoring structural distortions.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
J. Madhusudhan Naik; ADIYERI SASEENDRAN Devi Prasad; PATZKE Greta; RITTER Clemens and TRIANA Carlos. (2019). Defect-induced activity of (La0.6-xCexSr0.4)(CeyMn1-y)O3, a promising perovskite redox material class for solar thermochemical CO2 splitting. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.DIR-181
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.