CASTRO, Laurent; PETIT, Emmanuel; BENAYAD, Anass; MAUVY, Fabrice; PECQUENARD, Brigitte; LE CRAS, Frédéric; BARCHASZ, Céline

doi:10.1016/j.ssi.2020.115402

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CASTRO, Laurent
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

PETIT, Emmanuel
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

BENAYAD, Anass
Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]

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Article de revue

Ce document a été publié dans

Solid State Ionics. 2020, vol. 354, p. 115402

Elsevier

Résumé en anglais

Among the different cutting-edge solutions currently under investigation, lithium metal technologies have received a renewed interest. Thorough research work is currently carried out to enhance the safety and cyclability of the lithium metal electrode, targeting high energy post-Li-ion systems such as the lithium/sulfur technology. This study aims at investigating different inorganic protective layers that could be placed at the surface of the lithium metal electrode in a lithium/sulfur system, in order to prevent the detrimental interactions with polysulfide species and electrolyte components. The chemical stability of the selected inorganic materials (amorphous thin films, crystalline ceramics and glass-ceramics) towards ether-based (polysulfides-containing) electrolytes was studied. Although being crucial for long term cycling of Li/S cells, this issue has not been addressed so far. The chemical composition and morphology of the different materials after immersion in different electrolytes were characterized by X-ray diffraction, XPS and SEM, and the most promising materials were evaluated in Li/S cells.< Réduire

Mots clés en anglais

Lithium metal protection

Lithium conducting ceramics and thin film

Chemical stability

Lithium polysulfides

Electrochemical performances

DOI

http://dx.doi.org/10.1016/j.ssi.2020.115402

Project ANR

PERformance et SEcurité POur accumulateurs LIthium/Soufre - ANR-12-PRGE-0006

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026