Electrolyte and lithium ion secondary battery comprising the same

An electrolyte for a Lithium ion secondary battery which includes: a non-aqueous organic solvent; a lithium salt; and a phosphonitrile fluoride trimer as an additive, and a lithium ion secondary battery comprising the same. The thickness increase rate of the battery is reduced even when it is kept a...

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Bibliographische Detailangaben
Hauptverfasser:	KIM, JINBUM, OH, JUNGKANG, HAN, SUHEE, PARK, NARAE, KIM, JINSUNG, LIM, JINHYUNK
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	An electrolyte for a Lithium ion secondary battery which includes: a non-aqueous organic solvent; a lithium salt; and a phosphonitrile fluoride trimer as an additive, and a lithium ion secondary battery comprising the same. The thickness increase rate of the battery is reduced even when it is kept at a high temperature. Thus, thermal stability and durability are prominently improved. The battery can more improve durability by further comprising vinylene carbonate or ethylene carbonate group compound in the electrolyte.