Ex situ solid electrolyte interphase synthesis via radiolysis of Li-ion battery anode–electrolyte system for improved coulombic efficiency

Fanny Varenne 1 John Alper 2 Frederic Miserque 3 Chandra Sekhar Bongu 1 Adrien Boulineau 4 Jean-Frederic Martin 4 Vincent Dauvois 5 Alexandre Demarque 6 Mickaël Bouhier 1 Florent Boismain 2 Sylvain Franger 7 Nathalie Herlin-Boime 2 Sophie Le Caer 1
1 LIONS - Laboratoire Interdisciplinaire sur l'Organisation Nanométrique et Supramoléculaire
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
2 LEDNA - Laboratoire Edifices Nanométriques
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
3 LECA - Laboratoire d'Etude de la Corrosion Aqueuse
SCCME - Service de la Corrosion et du Comportement des Matériaux dans leur Environnement : DEN/DPC/SCCME/LECA
4 LITEN - Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux
5 SECR - Service d'Etudes du Comportement des Radionucléides
6 Laboratoire de Chimie Physique/ELYSE
7 ICMMO - Institut de Chimie Moléculaire et des Matériaux d'Orsay
Abstract : The radiolysis of a mixed solvent electrolyte–carbon anode material is investigated for the first time. The present work demonstrates the radiolytic growth of an SEI with a chemical composition similar to that formed during electrochemical cycling, as determined by XPS. The quantity of the SEI increases with increasing irradiation dose. Degradation products formed in the liquid and gas phase are also identified as matching those formed during electrochemical cycling. TEM results support the XPS results of increasing SEI content with increasing irradiation dose. Electrochemical characterization by galvanostatic cycling of test cells indicates that the radiolysis generated SEI greatly improves first cycle efficiency of the materials assembled in half cells, and impedance spectroscopy supports the result with an increase in resistivity observed for irradiated samples. This first study opens the door to the use of irradiation tools for the artificial generation of an SEI and for producing LIB anode materials with improved performance.
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https://hal-cea.archives-ouvertes.fr/cea-01849069
Contributor : Serge Palacin <>
Submitted on : Wednesday, July 25, 2018 - 2:37:32 PM
Last modification on : Tuesday, October 1, 2019 - 12:36:02 PM

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Fanny Varenne, John Alper, Frederic Miserque, Chandra Sekhar Bongu, Adrien Boulineau, et al.. Ex situ solid electrolyte interphase synthesis via radiolysis of Li-ion battery anode–electrolyte system for improved coulombic efficiency. Sustainable Energy & Fuels, Royal Society of Chemistry, 2018, 2, pp.2100-2108. ⟨10.1039/C8SE00257F⟩. ⟨cea-01849069⟩

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