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    Lithium ion battery with improved safety
    1.
    发明授权
    Lithium ion battery with improved safety 有权
    锂离子电池安全性提高

    公开(公告)号：US07026074B2

    公开(公告)日：2006-04-11

    申请号：US10077569

    申请日：2002-02-15

    申请人： Chun-hua Chen ,  Yoo Eup Hyung ,  Donald R. Vissers ,  Khalil Amine

    发明人： Chun-hua Chen ,  Yoo Eup Hyung ,  Donald R. Vissers ,  Khalil Amine

    IPC分类号： H01M10/40

    CPC分类号： H01M10/0567 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/4235

    摘要： A lithium battery with improved safety that utilizes one or more additives in the battery electrolyte solution wherein a lithium salt is dissolved in an organic solvent, which may contain propylene, carbonate. For example, a blend of 2 wt % triphenyl phosphate (TPP), 1 wt % diphenyl monobutyl phosphate (DMP) and 2 wt % vinyl ethylene carbonate additives has been found to significantly enhance the safety and performance of Li-ion batteries using a LiPF6 salt in EC/DEC electrolyte solvent. The invention relates to both the use of individual additives and to blends of additives such as that shown in the above example at concentrations of 1 to 4-wt % in the lithium battery electrolyte. This invention relates to additives that suppress gas evolution in the cell, passivate graphite electrode and protect it from exfoliating in the presence of propylene carbonate solvents in the electrolyte, and retard flames in the lithium batteries.

    摘要翻译： 一种电池电解液中使用一种或多种添加剂的安全性提高的锂电池，其中锂盐溶解在可能含有丙烯，碳酸盐的有机溶剂中。 例如，已经发现，使用2重量％磷酸三苯酯（TPP），1重量％磷酸二苯基丁酯（DMP）和2重量％乙烯基碳酸亚乙酯添加剂的混合物可显着提高使用LiPF的锂离子电池的安全性和性能 EC / DEC电解质溶剂中的盐。 本发明涉及在锂电池电解质中单独添加剂的使用和上述实施例中所示的添加剂的混合物的浓度为1至4重量％。 本发明涉及抑制电池中的气体逸出的添加剂，钝化石墨电极，并且在电解质中存在碳酸丙烯酯溶剂的情况下保护其免于脱落，并延缓锂电池中的火焰。