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    • 6. 发明公开
    • 리튬 이차전지
    • 锂二次电池
    • KR1020110087880A
    • 2011-08-03
    • KR1020100007519
    • 2010-01-27
    • 주식회사 엘지화학
    • 홍연숙오재승이병배이상현최권영김동수이효진
    • H01M10/0567H01M10/0525C07D317/08C07C255/01
    • H01M10/0567C07C255/01C07D317/08H01M10/0525
    • PURPOSE: A lithium secondary battery is provided to ensure thermal and mechanical stability, electrical safety, overcharge safety, and to suppress the battery swelling phenomenon caused by the gas generated in the high temperature storage. CONSTITUTION: A lithium secondary battery comprises a positive electrode, a negative electrode, a separator interposed between the positive and negative electrodes, and nonaqueous electrolyte. The nonaqueous electrolyte includes ionizable lithium salts and organic solvents. The lithium secondary battery comprises, based on the total weight of the nonaqueous electrolyte as additives, (a) 1-10 weight% of a compound including a halogen-substituted cyclic carbonate substituted with halogen represented by chemical formula 1, vinylene group or vinyl group, and (b) 0.1-10 weight% of a bis(cyanoalkyl)ether compound with the carbon number of 2-12 of the whole alkyl.
    • 目的:提供锂二次电池,以确保热和机械稳定性,电气安全性,过充电安全性,并抑制高温储存中产生的气体引起的电池膨胀现象。 构成:锂二次电池包括正极,负极,介于正极和负极之间的隔膜和非水电解质。 非水电解质包括可离子化锂盐和有机溶剂。 锂二次电池以非水电解质作为添加剂的总重量包含(a)1-10重量%的由化学式1表示的卤素取代的卤素取代的环状碳酸酯,亚乙烯基或乙烯基 ,和(b)0.1-10重量%的全部烷基的碳数为2-12的双(氰基烷基)醚化合物。