Article Dans Une Revue Journal of the American Ceramic Society Année : 2021

Flash sintering of cationic conductive ceramics: A way to build multilayer systems

Résumé

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 Li1.3Al0.3Ti1.7(PO4)3 (LATP), the best material to ensure this fast charge transfer reaction is a mixed Li + / econductor, e. g., LiCoO2 (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 2 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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hal-03334120 , version 1 (03-09-2021)

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Marie Lachal, Hana El Khal, Didier Bouvard, Jean-Marc Chaix, Renaud Bouchet, et al.. Flash sintering of cationic conductive ceramics: A way to build multilayer systems. Journal of the American Ceramic Society, 2021, 104 (8), pp.3845-3854. ⟨10.1111/jace.17787⟩. ⟨hal-03334120⟩
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