Additive for non-aqueous electrolyte and secondary battery using the same
    2.
    发明申请
    Additive for non-aqueous electrolyte and secondary battery using the same 有权
    用于非水电解质和二次电池的添加剂

    公开(公告)号:US20090280414A1

    公开(公告)日:2009-11-12

    申请号:US12311121

    申请日:2007-09-20

    IPC分类号: H01M6/18 H01M6/16

    摘要: Disclosed is an electrolyte comprising a compound having both a sulfonate group and a cyclic carbonate group. The electrolyte forms a more stable and dense SEI layer on the surface of an anode, and thus improves the capacity maintenance characteristics and lifespan characteristics of a battery. Also, disclosed is a compound represented by the following Formula 1, and a method for preparing the same by reacting 4-(hydroxyalkyl)-1,3-dioxolan-2-one with a sulfonyl halide compound: wherein each of R1 and R2 independently represents a C1˜C6 alkylene group optionally containing a C1˜C6 alkyl group or C2˜C6 alkenyl group introduced thereto; R3 is selected from the group consisting of a hydrogen atom, C1˜C20 alkyl group, C3˜C8 cyclic alkyl group, C2˜C6 alkenyl group, halo-substituted alkyl group, phenyl group and benzyl group.

    摘要翻译: 公开了包含具有磺酸酯基和环状碳酸酯基的化合物的电解质。 电解质在阳极表面形成更稳定和更致密的SEI层,从而提高电池的容量维持特性和寿命特性。 此外,还公开了由下式1表示的化合物及其制备方法,其中4-(羟烷基)-1,3-二氧戊环-2-酮与磺酰卤化合物反应:其中R 1和R 2各自独立地 表示任选地含有引入其中的C 1〜C 6烷基或C 2〜C 6烯基的C 1〜C 6亚烷基; R3选自氢原子,C1〜C20烷基,C3〜C8环状烷基,C2〜C6烯基,卤素取代的烷基,苯基和苄基。