发明名称 LITHIUM SECONDARY BATTERY
摘要 PURPOSE:To enhance the charge and discharge characteristic and low- temperature intense load characteristic of a lithium secondary battery by using as the organic solvent of electrolyte a mixed liquid consisting of propylene carbonate, ethylene carbonate, 2-methyltetrahydrofuran and dimenthylsulfoxide. CONSTITUTION:A mixed liquid consisting of propylene carbonate (PC), ethylene carbonate (EC), 2-methylhydrofuran (2Me-THF) and dimethylsulfoxide (DMSO) is used in the organic solvent of an electrolyte having lithium salts dissolved therein. PC and DMSO are added to the other solvents in an amount of 10 to 45 vol.% and 0.01 to 10 vol.%, respectively, so as to prevent solidification of the EC at low temperatures and crystallization of the lithium salts. This improves the charge and discharge characteristic and low-temperature intense load characteristic of a lithium secondary battery.
申请公布号 JPH03133067(A) 申请公布日期 1991.06.06
申请号 JP19890272251 申请日期 1989.10.18
申请人 YUASA BATTERY CO LTD 发明人 KURIYAMA KAZUYA
分类号 H01M10/05;H01M10/052;H01M10/0568;H01M10/0569 主分类号 H01M10/05
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