Transition-metal interdiffusion and solid electrolyte poisoning in all-solid-state batteries revealed by cryo-TEM
Ruizhuo Zhang, Florian Strauss, Lin Jiang, Lee Casalena, Letian Li, Jürgen Janek, Aleksandr Kondrakov, Torsten Brezesinski
Abstract
Using scanning transmission electron microscopy, along with electron energy loss spectroscopy, under cryogenic conditions, we demonstrate transition-metal dissolution from a layered Ni-rich oxide cathode material and subsequent diffusion into the bulk of a lithium thiophosphate solid electrolyte during electrochemical cycling. This problem has previously only been considered for liquid-electrolyte-based batteries.
Topics & Concepts
ElectrolyteSolid-stateMaterials scienceTransition metalMetalChemical engineeringInorganic chemistryNanotechnologyChemistryMetallurgyPhysical chemistryOrganic chemistryElectrodeCatalysisEngineeringAdvancements in Battery MaterialsAdvanced Battery Materials and TechnologiesAdvanced Battery Technologies Research