In this work, we developed a new kind of flexible Li ion conductor membrane consisting of PVDF‐HFP matrix and ionic liquid absorbed in metal‐organic framework (MOF) particles. This composite membrane facilitates a homogeneous Li‐ion flux and exhibits excellent ionic conductivity of about 4.3×10‐4 S cm‐1 at room temperature, wide electrochemical window of 4.8 V (vs. Li+/Li), good thermal stability and flexibility. The quasi‐solid‐state lithium metal battery assembled with the composite electrolyte membrane, Li metal anode and composite cathode shows low interface impedance and reversible discharge capacity of 149 mAh g‐1 within 300 cycles at 0.1 C. This new kind quasi‐solid‐state electrolyte membrane demonstrates a promising candidate for solid‐state lithium‐metal batteries with high energy density.

中文翻译：

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源自锂金属电池金属有机骨架的柔性准固态复合电解质膜

在这项工作中，我们开发了一种新型的柔性锂离子导电膜，该膜由PVDF-HFP基质和吸收在金属有机骨架（MOF）颗粒中的离子液体组成。这种复合膜促进了均匀的锂离子通量，并在室温下具有约4.3×10-4 S cm-1的优异离子电导率，4.8 V的宽电化学窗口（vs.Li + / Li），良好的热稳定性和柔韧性。由复合电解质膜，锂金属阳极和复合阴极组装而成的准固态锂金属电池在0.1 C的300次循环中显示出较低的界面阻抗和149 mAh g-1的可逆放电容量。这种新型的准固态锂电池固态电解质膜证明是高能量密度固态锂金属电池的有希望的候选者。