The interfacial incompatibility of the poly (ethylene oxide)-based electrolytes hinder the longevity and further practice of all-solid-state batteries. Herein, we present a productive additive 1-Fluoroadamantane facilitating to the distinct performance of the poly (ethylene oxide)-based electrolytes. Attributed to the strong molecular interaction, the coordination of the Li⁺-EO is reduced and the ‘bonding effect’ of anion is improved. Thus, the Li ⁺ conductivity is promoted and the electrochemical window is widened. The diamond building block C₁₀H₁₅⁻ strengthens the stability of the solid polymer electrolytes. Importantly, the 1-Fluoroadamantane mediates the generation of LiF in the interfaces, which fosters the interfacial stability, contributing to the long-term cycling. Hence, the symmetric cell (Li/Li) exhibits a long-term lithium plating/stripping for over 2,400 h. The 4.3 V LiNi_0.8Mn_0.1Co_0.1O₂/Li all-solid-state battery with the 1-Fluoroadamantane-poly (ethylene oxide) improved electrolyte delivers 600 times, with an impressive capacity retention of 84%. Also, the cell presents high capacity of 210 mA·h/g, and 170 mA·h/g at 0.1 C and 0.3 C respectively, rivalling the liquid electrolytes.

中文翻译：

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氟化分子金刚石改进的聚合物电解质可实现全固态锂金属电池的高容量稳定循环


基于聚（环氧乙烷）的电解质的界面不相容性阻碍了全固态电池的寿命和进一步实践。在此，我们提出了一种高效的添加剂 1-氟金刚烷，有助于实现基于聚（环氧乙烷）的电解质的独特性能。由于强分子相互作用，Li⁺-EO 的配位降低，阴离子的“键合效应”得到改善。因此，Li ⁺ 电导率得到提升，电化学窗口变宽。金刚石结构单元 C₁₀H₁₅⁻ 增强了固体聚合物电解质的稳定性。重要的是，1-氟金刚烷介导界面中 LiF 的产生，从而促进界面稳定性，有助于长期循环。因此，对称电池 （Li/Li） 表现出超过 2,400 小时的长期锂电镀/剥离。4.3 V LiNi_0.8Mn_0.1Co_0.1O₂/Li 全固态电池采用 1-氟金刚烷-聚（环氧乙烷）改进电解液，可提供 600 次充电，容量保持率高达 84%。此外，该电池在 0.1 C 和 0.3 C 时分别呈现出 210 mA·h/g 和 170 mA·h/g 的高容量，可与液体电解质相媲美。