Flash sintering of cationic conductive ceramics: A way to build multilayer systems |
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| Authors: | Marie Lachal Hana El Khal Didier Bouvard Jean-Marc Chaix Renaud Bouchet Marlu Cesar Steil |
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| Affiliation: | 1. Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, Grenoble, France;2. Univ. Grenoble Alpes, CNRS, Grenoble INP, SIMAP, Grenoble, France |
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| 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 Li1.3Al0.3Ti1.7(PO4)3 (LATP), the best material to ensure this fast charge transfer reaction is a mixed Li+/e− conductor, eg, 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 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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| Keywords: | flash sintering interface LATP LCO reversible electrochemical reaction |
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