材料科学
电解质
离子电导率
锂(药物)
电池(电)
复合数
化学工程
阴极
膜
磷酸钒锂电池
电化学窗口
无机化学
阳极
电化学
电极
复合材料
化学
物理化学
医学
物理
工程类
内分泌学
量子力学
功率(物理)
生物化学
标识
DOI:10.1002/celc.201902032
摘要
Abstract In this work, we developed a new kind of flexible Li‐ion conductor membrane consisting of poly(vinylidene fluoride‐co‐hexafluoropropylene) matrix and ionic liquid absorbed in metal‐organic framework (MOF) particles. This composite membrane facilitates a homogeneous Li‐ion flux and exhibits an excellent ionic conductivity of about 4.3×10 −4 S cm −1 at room temperature, a wide electrochemical window of 4.8 V ( vs . Li + /Li), as well as good thermal stability and flexibility. The quasi‐solid‐state lithium metal battery assembled with the composite electrolyte membrane, a Li metal anode, and a composite cathode shows low interface impedance and a reversible discharge capacity of 149 mAh g −1 within 300 cycles at 0.1 C. This new kind of quasi‐solid‐state electrolyte membrane is a promising candidate for solid‐state lithium‐metal batteries with a high energy density.
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