Flash sintering of cationic conductive ceramics: A way to build multilayer systems. Issue 8 (7th April 2021)

• Record Type: Journal Article
• Authors: Lachal, Marie; El Khal, Hana; Bouvard, Didier; Chaix, Jean‐Marc; Bouchet, Renaud; Steil, Marlu Cesar
• Is Part Of: Journal of the American Ceramic Society. Volume 104:Issue 8(2021)
• Page Start: 3845
• Page End: 3854
• Publication Date: 2021-04-07
• Subjects: flash sintering -- interface -- LATP -- LCO -- reversible electrochemical reaction; Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.17787
• Languages: English
• ISSNs: 0002-7820

Abstract

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 Li1.3 Al0.3 Ti1.7 (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. Abstract : Flash sintering of cationic ceramics: need for a reversible electrochemical reaction.