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Flash sintering of cationic conductive ceramics: A way to build multilayer systems
Author(s) -
Lachal Marie,
El Khal Hana,
Bouvard Didier,
Chaix JeanMarc,
Bouchet Renaud,
Steil Marlu Cesar
Publication year - 2021
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17787
Subject(s) - materials science , sintering , electrode , ceramic , electrical conductor , flash (photography) , composite number , conductor , electrochemistry , composite material , delamination (geology) , chemical engineering , chemistry , art , visual arts , paleontology , biology , subduction , tectonics , engineering
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.