Flame Retardant and Stable Li1.5Al0.5Ge1.5(PO4)3-Supported Ionic Liquid Gel Polymer Electrolytes for High Safety Rechargeable Solid-State Lithium Metal Batteries

• DOI: 10.1021/acs.jpcc.8b02693
• Publication Date: 2018-04-24T16:06:16Z
• Authors: Qingpeng Guo; Yu Han; Hui Wang; Shizhao Xiong; Weiwei Sun; Chunman Zheng; Kai Xie
• Keywords: Electrochemical window

Recently, poor security in conventional liquid electrolytes and high interfacial resistance at the electrode/electrolyte interface are most challenging barriers for expanded application of lithium batteries. In this regard, easy processing flexible composite ionic gel polymer (ILGPEs) supported by Li1.5Al0.5Ge1.5(PO4)3 (LAGP) fabricated investigated. The electrolyte is effectively combined with good electrochemical performances thermal safety. Among these, effects different types fillers such as inert filler-SiO2 active filler-LAGP on conductivity were studied detail. LAGP particles can not only reduce crystallinity matrix but also provide ions act lithium-ion conductor leading to higher Li+ ion transference number. Especially, shows compatibility no dendrite Li metal anode, significantly improving cyclic stability LiFePO4/Li results indicate that ILGPE-10%LAGP a potential alternative safety rechargeable solid-state