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    • 23. 发明申请
    • Electrolyte for lithium secondary battery and lithium secondary battery including the same
    • 锂二次电池用电解液和锂二次电池等
    • US20080131785A1
    • 2008-06-05
    • US11984304
    • 2007-11-15
    • Na-Rae ParkJin-Bum KimJin-Sung KimYong-Shik Kim
    • Na-Rae ParkJin-Bum KimJin-Sung KimYong-Shik Kim
    • H01M10/02
    • H01M10/0569H01M10/052H01M10/0567
    • An electrolyte for a lithium secondary battery, and a lithium secondary battery including the same are provided. The electrolyte includes: a cyclic ester; an organic solvent including a nitrile-containing solvent represented by Formula 1 at a content ranging from 1 to 5% by volume; and a lithium salt, R—C≡N   (1) wherein R is selected from the group consisting of a C1 to C10 aliphatic hydrocarbon, a C1 to C10 halogenated aliphatic hydrocarbon, a C6 to C10 aromatic hydrocarbon, and a C6 to C10 halogenated aromatic hydrocarbon. The electrolyte can improve swelling characteristics and discharge capacity characteristics at a low temperature, and realize equal or better performance in characteristics such as capacity, life span and the like, as compared to a conventional carbonate-containing electrolyte.
    • 提供了一种用于锂二次电池的电解质和包括该二次电池的锂二次电池。 电解质包括:环酯; 含有1〜5体积%的由式1表示的含腈溶剂的有机溶剂; 和锂盐,<?in-line-formula description =“In-line Formulas”end =“lead”?>RC≡N(1)<?in-line-formula description =“In-line Formulas”end = “尾”→其中R选自C 1〜C 10脂族烃,C 1〜C 10, C 1 -C 10卤代脂族烃,C 6 -C 10芳族烃和C 6〜C 10芳香烃, 10个卤代芳烃。 与常规含碳酸盐电解质相比,电解质可以改善低温下的溶胀特性和放电容量特性,并且在诸如容量,寿命等特性方面实现相同或更好的性能。