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

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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 syst\ue8me d'\ue9lectrolyte \ue0 base de carbonate de t\ue9trachloro\ue9thyl\ue8ne et de carbonate de propyl\ue8ne pour des batteries au lithium-ion \ue0 anode en graphite. Nous montrons que dans un \ue9lectrolyte \ue0 base de carbonate de propyl\ue8ne, la d\ue9composition de l'\ue9lectrolyte durant le premier stade d\u2019intercalation du lithium dans le graphite est consid\ue9rablement r\ue9duite en pr\ue9sence de carbonate de t\ue9trachloro\ue9thyl\ue8ne. Nous pensons que l\u2019am\ue9lioration des performances de la cellule r\ue9sulte de la formation d'un film de passivation stable \ue0 la surface du graphite.Peer reviewed: YesNRC publication: Ye