锂(药物)
阳极
电解质
聚合物
电化学
离子键合
材料科学
离子液体
电化学窗口
结晶度
化学工程
无机化学
化学
离子
热稳定性
离子电导率
物理化学
催化作用
有机化学
电极
复合材料
内分泌学
工程类
医学
作者
Qingpeng Guo,Yu Han,Hui Wang,Shizhao Xiong,Weiwei Sun,Chunman Zheng,Kai Xie
标识
DOI:10.1021/acs.jpcc.8b02693
摘要
Recently, poor security in conventional liquid electrolytes and high interfacial resistance at the electrode/electrolyte interface are the most challenging barriers for the expanded application of lithium batteries. In this regard, easy processing and flexible composite ionic liquid gel polymer electrolytes (ILGPEs) supported by Li1.5Al0.5Ge1.5(PO4)3 (LAGP) are fabricated and investigated. The electrolyte is effectively combined with good electrochemical performances and thermal safety. Among these, the effects of different types of fillers such as the inert filler-SiO2 and the active filler-LAGP on the ionic conductivity were studied in detail. LAGP particles can not only effectively reduce the crystallinity of the polymer matrix but also provide lithium ions and act as the lithium-ion conductor leading to higher ionic conductivity and Li+ ion transference number. Especially, the electrolyte shows good compatibility and no dendrite with the Li metal anode, significantly improving cyclic stability of LiFePO4/Li batteries. The results indicate that the ILGPE-10%LAGP is a potential alternative electrolyte for high safety rechargeable solid-state lithium metal batteries.
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