A new flame-retardant polymer electrolyte with enhanced Li-ion conductivity for safe lithium-sulfur batteries  

作　　者：Hongping Li Yixi Kuai Jun Yang Shin-ichi Hirano Yanna Nuli Jiulin Wang 

机构地区：[1]School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [2]Hirano Institute for Materials Innovation,Shanghai Jiao Tong University,Shanghai 200240,China c [3]College of Chemistry,Zhengzhou University,Zhengzhou 450001,Henan,China

出　　处：《Journal of Energy Chemistry》2022年第2期616-622,共7页能源化学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.21773154 and U1705255)。

摘　　要：Flame-retardant polymer electrolytes(FRSPEs)are attractive due to their potential for fundamentally settling the safety issues of liquid electrolytes.However,the current FRSPEs have introduced large quantity of flame-retardant composition which cannot conduct lithium ions,thus decreasing the Li-ion conductivity.Here,we synthesize a novel liquid monomer 2-((bis((2-oxo-1,3-dioxolan-4-yl)methoxy)phosphoryl)oxy)ethyl acrylate(BDPA)for preparing FRSPE by in-situ polymerization,in which PBDPA polymer can not only conduct lithium ions,but also prevent burning.The prepared FRSPE demonstrated outstanding flame-retardant property,favorable lithium-ion conductivity of 5.65×10^(-4) S cm^(-1) at ambient temperature,and a wide electrochemical window up to 4.5 V.Moreover,the Li/in-situ FRSPE/S@pPAN cell exhibited favorable electrochemical performances.We believe that this work provides an effective strategy for establishing high-performance fireproof quasi-solid-state battery system.

关 键 词：Polymer electrolyte Flame-retardance Lithium-ion conductivity Lithium-sulfur battery 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ317[化学工程—高聚物工业]