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Effects of non-equimolar lithium salt glyme solvate ionic liquid on the control of interfacial degradation in lithium secondary batteries

机译:非等摩尔锂盐Glyme溶剂化物离子液对锂二次电池界面降解控制的影响

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摘要

Control of interfacial properties between the electrode and electrolyte is important for obtaining long lifecycle lithium-ion secondary batteries. To control interfacial degradation, we investigated the effect of changing the composition ratio of lithium salt (LiN(SO2CF3)(2)) and low-molecular-weight ether (CH3-O-(C2H4O)(3)-CH3) in the system. A highly electrochemically stable lithium salt glyme solvated ionic liquid electrolyte was realized, with long-lived, robust lithium solvation complexes by increasing the lithium salt composition ratio. Lithium secondary batteries using the electrolyte show notable suppression of the degradation of interfacial resistance at the interface of the electrolyte and the positive electrode (high oxidation state), which leads to a longer life-cycle of the batteries.
机译:控制电极和电解质之间的界面性能对于获得长的生命周期锂离子二次电池是重要的。 为了控制界面降解,研究了系统中改变锂盐(Lin(SO 2 CF 3))和低分子量醚(CH3-O-(C 2H 4 O)(3)-CH3)的组成比的效果 。 通过增加锂盐组合物比,实现了高度电化学稳定的锂盐甘草溶剂溶剂化离子液体电解质,具有长寿命稳健的锂溶剂化合物。 使用电解质的锂二次电池显着抑制电解质和正极(高氧化态)的界面处的界面抗性的劣化,这导致电池的较长寿命。

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  • 来源
    《RSC Advances》 |2016年第39期|共5页
  • 作者单位

    CRIEPI Mat Sci Res Lab 2-6-1 Nagasaka Yokosuka Kanagawa 2400196 Japan;

    CRIEPI Mat Sci Res Lab 2-6-1 Nagasaka Yokosuka Kanagawa 2400196 Japan;

    CRIEPI Mat Sci Res Lab 2-6-1 Nagasaka Yokosuka Kanagawa 2400196 Japan;

    Natl Inst Adv Ind Sci &

    Technol 1-1-1 Umezono Tsukuba Ibaraki 3058568 Japan;

    Niigata Univ Grad Sch Sci &

    Technol Nishi Ku 8050 Ikarashi 2 No Cho Niigata 950218 Japan;

    Keio Univ Fac Sci &

    Technol Dept Appl Chem Kohoku Ku 3-14-1 Hiyoshi Yokohama Kanagawa 2238522 Japan;

    Keio Univ Fac Sci &

    Technol Dept Appl Chem Kohoku Ku 3-14-1 Hiyoshi Yokohama Kanagawa 2238522 Japan;

    Yokohama Natl Univ Dept Chem &

    Biotechnol Hodogaya Ku 79-5 Tokiwadai Yokohama Kanagawa 2408501 Japan;

    Yokohama Natl Univ Dept Chem &

    Biotechnol Hodogaya Ku 79-5 Tokiwadai Yokohama Kanagawa 2408501 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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