Use of Chloroethylene Carbonate as an Electrolyte Solvent for a Lithium Ion Battery Containing a Graphitic Anode

Abstract

An electrolyte system which consists of chloroethylene carbonate and propylene carbonate has been developed for lithium ion batteries containing a graphitic anode. The electrolyte decomposition during the first lithium intercalation into graphite in a propylene carbonate based electrolyte is significantly reduced in the presence of chloroethylene carbonate. Formation of a stable passivation film on the graphite surface is believed to be the reason for the improved cell performance.Nous avons mis au point un systue8me d'ue9lectrolyte ue0 base de carbonate de tue9trachloroue9thylue8ne et de carbonate de propylue8ne pour des batteries au lithium-ion ue0 anode en graphite. Nous montrons que dans un ue9lectrolyte ue0 base de carbonate de propylue8ne, la due9composition de l'ue9lectrolyte durant le premier stade du2019intercalation du lithium dans le graphite est considue9rablement rue9duite en prue9sence de carbonate de tue9trachloroue9thylue8ne. Nous pensons que lu2019amue9lioration des performances de la cellule rue9sulte de la formation d'un film de passivation stable ue0 la surface du graphite.Peer reviewed: YesNRC publication: Ye