Secondary lithium battery
    26.
    发明授权
    Secondary lithium battery 失效
    二次锂电池

    公开(公告)号:US4737424A

    公开(公告)日:1988-04-12

    申请号:US925379

    申请日:1986-10-31

    摘要: The present invention provides an electrolyte for use on a secondary lithium battery comprising amorphous V.sub.2 O.sub.5 base cathode active material, a metallic lithium base active material, and an electrolytic solution lithium salt dissolved in a mixed organic solvent. The organic solvent is ethylene carbonate mixed with one organic solvent of 2-methyltetrahydrofuran, 2,5-dimethyltetrahydrofuran, 1,3-dioxalan, 4-methyl-1,3-dioxalan, 1,2-dimethoxyethane, etc. The mixed ratio of ethylene carbonate ranges within 10 to 50%, and water content of the electrolytic solution ranges within 400 to 5 ppm, and the content of impurities other than water ranges within 1000 to 10 ppm. The resultant secondary lithium battery is excellent in charge-discharge cycle life.

    摘要翻译: 本发明提供了一种用于二次锂电池的电解质,其包含非晶体V 2 O 5基底阴极活性材料,金属锂基活性材料和溶解在混合有机溶剂中的电解液锂盐。 有机溶剂是与2-甲基四氢呋喃,2,5-二甲基四氢呋喃,1,3-二氧杂环戊烷,4-甲基-1,3-二氧杂环戊烷,1,2-二甲氧基乙烷等的一种有机溶剂混合的碳酸亚乙酯。 碳酸亚乙酯的范围为10〜50%,电解液的含水量为400〜5ppm,水以外的杂质含量为1000〜10ppm以下。 所得二次锂电池的充放电循环寿命优异。