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Lachal, Marie; El Khal, Hana; Bouvard, Didier; Chaix, Jean‐Marc; Bouchet, Renaud; Steil, Marlu Cesar

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

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  • Media type: E-Article
  • Title: Flash sintering of cationic conductive ceramics: A way to build multilayer systems
  • Contributor: Lachal, Marie; El Khal, Hana; Bouvard, Didier; Chaix, Jean‐Marc; Bouchet, Renaud; Steil, Marlu Cesar
  • imprint: Wiley, 2021
  • Published in: Journal of the American Ceramic Society
  • Language: English
  • DOI: 10.1111/jace.17787
  • ISSN: 0002-7820; 1551-2916
  • Origination:
  • Footnote:
  • Description: <jats:title>Abstract</jats:title><jats:p>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<jats:sup>+</jats:sup> pure ionic conductors such as Li<jats:sub>1.3</jats:sub>Al<jats:sub>0.3</jats:sub>Ti<jats:sub>1.7</jats:sub>(PO<jats:sub>4</jats:sub>)<jats:sub>3</jats:sub> (LATP), the best material to ensure this fast charge transfer reaction is a mixed Li<jats:sup>+</jats:sup>/e<jats:sup>−</jats:sup> conductor, eg, LiCoO<jats:sub>2</jats:sub> (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.</jats:p>