In the quest for ever higher energy and power densities of lithium‐based batteries, numerous functional materials are being utilized, however in many cases their highly reactive nature is likely to increase the risk of danger in case of battery failures. This especially affects the aprotic non‐aqueous organic carbonate‐based electrolyte, still considered as the state‐of‐the‐art (SOTA) and its volatile and highly flammable components. Efforts to identify different forms of flame‐retardants or nonflammable electrolyte solvents/co‐solvents to reduce the risk of fire or explosion are inevitably followed by a trade‐off between the improved safety and deteriorated overall cycling performance of a battery. Here, we report on a smartly tailored, multifunctional nonflammable electrolyte formulation comprising 15.0 wt.% 2‐(2,2,3,3,3‐pentafluoro‐propoxy)‐4‐(trifluormethyl)‐1,3,2‐dioxaphospholane (PFPOEPi‐1CF 3 ), significantly advancing the cycling performance of the NMC111||graphite cells by formation of an effective interphase on/at both anode and cathode and correlate its performance to the 2‐(2,2,3,3,3‐pentafluoropropoxy)‐1,3,2‐dioxaphospholane (PFPOEPi) containing electrolyte counterpart by establishing a strong structure‐reactivity‐performance‐relationship.

中文翻译：

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基于非易燃氟化磷（III）的电解质，可提高锂离子电池的性能

为了寻求更高的锂基电池能量和功率密度，正在使用多种功能材料，但是在许多情况下，它们的高反应性可能会增加电池故障时的危险风险。这尤其会影响非质子非水有机碳酸盐电解质，至今仍被认为是最先进的（SOTA）及其挥发性和高度易燃成分。努力确定不同形式的阻燃剂或不易燃的电解质溶剂/助溶剂以减少着火或爆炸的风险，不可避免地要在提高安全性和降低电池的整体循环性能之间进行权衡。在这里，我们报告了一种精巧的多功能非易燃电解质配方，该配方包含15.0 wt。％2-（2,2,3,3，