电解质
材料科学
离子电导率
电化学窗口
快离子导体
化学工程
锂(药物)
电化学
聚丙烯
金属锂
无机化学
电极
复合材料
化学
物理化学
内分泌学
工程类
医学
作者
Gaohong He,Dan Cai,Xiuli Wang,Xinhui Xia,Changdong Gu,Jiangping Tu
标识
DOI:10.1021/acsami.1c23034
摘要
Metal-organic framework (MOF)-based solid-like electrolytes have attracted more prospective due to the combined merits of solid-state electrolytes and liquid electrolytes. However, most MOF-based solid-like electrolytes using organic liquid electrolytes cannot fundamentally solve the safety issues of lithium-metal batteries, and the ionic conductivity and mechanical strength of the electrolytes should be further enhanced. Herein, the ionic liquid-impregnated polypropylene (PP) porous membrane with integrally distributed ZIF-8 nanoparticles is designed. The solid-like electrolyte possesses an increased ionic conductivity of 2.09 × 10-4 S cm-1 at 25 °C, lithium-ion transference number (0.45), mechanical strength, electrochemical window, and excellent nanowetted interfaces. Furthermore, the Li symmetrical cell shows excellent Li plating/stripping properties for 550 h at 0.1 mA cm-2 and 0.1 mA h cm-2. The LiFePO4/Li full battery with the solid-like electrolyte demonstrates an excellent rate capability and cycling stability with the initial discharge capacity of 157.9 mA h g-1 and a capacity retention ratio of 91.23% after 450 cycles at 0.2 C. The work offers a new avenue toward MOF-based solid-like electrolytes for high-safety lithium-metal batteries.
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