Cation ordering exploration in Ni rich part of the solid solution LiNixMn2-xO4 spinels as a function of the synthesis temperature

DOI

High voltage spinel LiNi0.5Mn1.5O4 is considered as one of the most promising cathode materials for Li- ion batteries. LiNi0.5Mn1.5O4 can adopt two different cubic cells: an ordered spinel structure, where Ni and Mn occupy distinct crystallographic sites (S.G. P4332) or a disordered one (S.G. Fd-3m), where Ni and Mn are randomly distributed in the same site. These structural differences affect the electrochemical properties from the galvanostatic curves shape to the cycling life. Very recently, based on Raman spectroscopy measurements and electrochemical characterizations, we evidenced a composition domain of the ordered spinel phase, between LiNi0.4Mn1.6O4 to LiNi0.5Mn1.5O4, when samples are prepared at 700°C. Our aim is to finelly determine the limits (synthesis temperature and composition), the ordering degree, and to determine how it affects the electrochemical properties.

Identifier
DOI https://doi.org/10.5286/ISIS.E.RB1920335-1
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/105602840
Provenance
Creator Dr Nicolas Emery; Dr Ron Smith; Dr Rita Hadjean; Mr Ankush Bhatia
Publisher ISIS Neutron and Muon Source
Publication Year 2022
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2019-09-30T07:30:00Z
Temporal Coverage End 2019-10-02T07:30:00Z