Energy-Dispersive Inelastic X-Ray Scattering Spectroscopy as a New Tool for Energy Materials Characterization

ROBLEDO, JOSÉ IGNACIO; F. OLIVA; CHAUQUE, SUSANA; SÁNCHEZ, HÉCTOR JORGE; LEANI, JUAN JOSÉ; O. CAMARA

Workshop; International Workshop on Lithium, Industrial Minerals and Energy (IWLIME 2020); 2020

ThecompoundLi4Ti5O12(alsoknownasLTO)hasbeeninvestigatedasanodematerialoflithiumionbatteriesforseveralapplicationsasenergystorageforelectricandhybridvehiclesduetoitsexceptionalfeatures[1-3].ThisLTOcompoundhasshownaremarkableLi-ionintercalation/de-intercalationreversibility,demonstratingalsozero-strainvolumechangeduringthecyclingprocess,withtheadditionofanotablesafetyperformance.Furthermore,LTOhasahighvoltageplateauincomparisonwithotheranodematerialcandidates,helpingtoavoidtheformationofmetalliclithium[4].Clearly,adeepknowledgeregardingthebehaviorofthisLTOcompoundisofinterest.Inthiswork,Energy-DispersiveResonantInelasticX-rayScattering(EDIXS)[5]isusedtofulfillthisneed.Inaddition,XANESmeasurementswerecarriedoutascomplementarymethodology.TheresultsshowthatEDIXScandifferentiateLTOchemicalcompounds(lithiatedandde-lithiated)withhighsensitivity,beingareliabletooltoperformchemicalspeciationanalysisonenergystoragematerials.