NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

A nonaqueous secondary battery is provided to improve the stability to overcharge and to enhance high temperature cycle characteristics. A nonaqueous secondary battery comprises a positive electrode which contains 0.5-1.5 wt% of lithium carbonate; a negative electrode; a nonaqueous electrolyte which...

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Bibliographische Detailangaben
Hauptverfasser:	HAMASAKI KAZUKI, TOMIMOTO KAZUO, OKAZAKI YASUNORI, OGI MASANORI, YAMASHITA SHUICHI, SUWA HIROMITSU
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	A nonaqueous secondary battery is provided to improve the stability to overcharge and to enhance high temperature cycle characteristics. A nonaqueous secondary battery comprises a positive electrode which contains 0.5-1.5 wt% of lithium carbonate; a negative electrode; a nonaqueous electrolyte which contains 0.5-2.0 wt% of a cycloalkylbenzene compound and/or a compound having a quaternary carbon adjacent to a benzene ring; and a pressure sensitive safety device which is operated by the increase of the internal pressure. Preferably the cycloalkylbenzene compound is cyclohexylbenzene; and the compound having a quaternary carbon adjacent to a benzene ring is t-amylbenzene.