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

Fanny Varenne; John Alper; Frederic Miserque; Chandra Sekhar Bongu; Adrien Boulineau; Jean-Frederic Martin; Vincent Dauvois; Alexandre Demarque; Mickaël Bouhier; Florent Boismain; Sylvain Franger; Nathalie Herlin-Boime; Sophie Le Caer

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 DEN/DANS/DEPC/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

DPC - Département de Physico-Chimie : DEN/DPC

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.

Document type :

Journal articles

Domain :

Chemical Sciences / Material chemistry

Chemical Sciences / Inorganic chemistry

Chemical Sciences / Theoretical and/or physical chemistry

Complete list of metadatas

https://hal-cea.archives-ouvertes.fr/cea-01849069
Contributor : Serge Palacin <>
Submitted on : Wednesday, July 25, 2018 - 2:37:32 PM
Last modification on : Thursday, August 1, 2019 - 11:41:26 AM

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

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

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