Journal of the American Ceramic Society · 2021 · 20 citations · 43 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCeramicsElectrochemistryCeramic CompositesElectrode MaterialsElectrolyte MaterialsIon-conducting MaterialsIonic ConductorsSinteringCeramic ElectrolytesComposite Electrode MaterialsConductive CeramicsElectrochemical Reaction MechanismsFlash SinteringIonic Conducting CeramicsMixed Ionic-electronic ConductorsSolid Oxide Electrolyte Materials
Abstract Flash Sintering (FS), that allows densifying ceramics at low furnace temperature in a few seconds, requires a reversible electrochemical reaction to enable the current flow through the electrode / material interface. For Li + pure ionic conductors such as Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP), the best material to ensure this fast charge transfer reaction is a mixed Li + /e − conductor, eg, LiCoO 2 (LCO). This paper demonstrates the feasibility of FS on LCO between two Pt electrodes and on multi‐layers systems using LCO or LATP+LCO composite as electrodes. It is shown that a composite electrode both allows the flash event to occur and prevents the delamination possibly observed with pure LCO by lowering interfacial stresses.
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Mattia Biesuz, Vincenzo M. Sglavo · Journal of the European Ceramic Society · 2018 · 451 citations · Full text