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Facile Protection of Lithium Metal for All‐Solid‐State Batteries

 
: Delaporte, Nicolas; Guerfi, Abdelbast; Demers, Hendrix; Lorrmann, Henning; Paolella, Andrea; Zaghib, Karim

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ChemistryOpen 8 (2019), Nr.2, S.192-195
ISSN: 2191-1363
Englisch
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer ISC ()
lithium; Lithium-Ionen-Batterie; Schutzschicht; Polymere; Silane; Batterie

Abstract
A nanolayer of reactive propyl acrylate silane groups was deposited on a lithium surface by using a simple dipping method. The polymerization of cross‐linkable silane groups with a layer of ally‐ether‐ramified polyethylene oxide was induced by UV light. SEM analysis revealed a good dispersion of silane groups grafted on the lithium surface and a layer of polymer of about 4 μm was obtained after casting and reticulation. The electrochemical performance for the unmodified and modified lithium electrodes were compared in symmetrical Li/LLZO/Li cells. Stable plating/stripping and low interfacial resistance were obtained when the modified lithium was utilized, indicating that the combination of silane and polymer deposition is promising to increase Li‐metal/garnet contact.

: http://publica.fraunhofer.de/dokumente/N-541004.html