A new phosphonamidate, bis(N,N-diethyl)(2-methoxyethoxy)methylphosphonamidate (DEMEMPA) has been synthesized as N-P collaborative flame retardant additive in electrolytes for lithium ion batteries (LIBs). It is found that adding 10 vol.% of DEMEMPA to 0.9 M LiPF₆/EC/DMC can significantly inhibit the burning of electrolytes and provide a wide electrochemical window. Further studies indicate that the electrolytes with and without DEMEMPA have similar electrochemical behavior with natural graphite and LiFePO₄ electrodes. These support the feasibility of using DEMEMPA as a flame retardant additive for LIBs.

中文翻译：

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一种新型的氨基磷酸酯作为锂离子电池电解液中的阻燃添加剂

合成了一种新的膦酰胺盐双（N，N-二乙基）（2-甲氧基乙氧基）甲基氨基膦酸酯（DEMEMPA）作为锂离子电池（LIBs）电解质中的NP协同阻燃添加剂。发现在0.9M LiPF ₆ / EC / DMC中添加10体积％的DEMEMPA可以显着抑制电解质的燃烧并提供宽的电化学窗口。进一步的研究表明，带有和不带有DEMEMPA的电解质与天然石墨和LiFePO ₄电极具有相似的电化学行为。这些支持使用DEMEMPA作为LIB的阻燃添加剂的可行性。