Order-disorder and phase transitions in the LiFeO2 cathode materials


Despite the importance of the LiFeO2 phases as cathode materials in lithium ion batteries, little is known about their crystal structures, except that they should be based on various superlattices of the NaCl-type disordered configuration. In particular, different degrees of ordering of the Li/Fe distribution are expected to be associated to these superstructures, affecting substantially the mechanisms of Li+ ion transport in the corresponding phases. In the frame of our research project on the structural properties of lithium ion conductors, we propose to collect powder diffraction data on samples of the beta, beta', and gamma polymorphs of LiFeO2 in the 25 to 800 C thermal range, in order to determine and refine their structures, to locate lithium ions, to determine the Li/Fe disorder state and then to infer the mobility pathways of Li+ ion at variable temperature.

DOI https://doi.org/10.5286/ISIS.E.24079182
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24079182
Creator Professor Michele Catti
Publisher ISIS Neutron and Muon Source
Publication Year 2012
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2009-12-12T09:40:25Z
Temporal Coverage End 2009-12-14T09:18:34Z