3D flame-retardant skeleton reinforced polymer electrolyte for solid-state dendrite-free lithium metal batteries

作     者：Xiaojiao Zheng Jiawei Wu Jing Chen Xiaodong Wang Zhenglong Yang Xiaojiao Zheng;Jiawei Wu;Jing Chen;Xiaodong Wang;Zhenglong Yang

作者机构：Shanghai Key Laboratory of D&A for Metal-Functional MaterialsSchool of Materials Science and EngineeringTongji UniversityShanghai 200092China Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology&School of Physics Science and EngineeringTongji UniversityShanghai 200092China 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2022年第31卷第8期

页      面：174-181,I0006页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Key Research and Development Program of China(Grant No.2017YFA0204600) the National Natural Science Foundation of China(Grant No.5210021666) the Key R&D and Promotion Projects of Henan Province(Grant No.212102310016) 

主　　题：Solid polymer electrolytes Polyethylene oxide 3D flame-retardant skeleton Multifunctional fillers Synergistic effect 

摘      要：For solid polymer electrolytes(SPEs),improving their mechanical and electrochemical properties is the key to obtaining batteries with higher safety and higher energy ***,a novel synergistic strategy proposed is preparing a 3D flame-retardant skeleton(3DPA)and adding nano-multifunctional fillers(Li-ILs@ZIF-8).In addition to providing mechanical support for the polyethylene oxide(PEO)matrix,3DPA also has further contributed to the system’s flame retardancy and further improved the ***,the electrochemical performance is fully guaranteed by rigid Li-ILs@ZIF-8,which provides fast migration channels forLi^(+),reduces the crystallinity of PEO and effectively inhibits lithium *** limiting oxygen index of the optimal sample(PL3Z/PA)is as high as 20.5%,and the ionic conductivity reaches 2.89×10^(-4) and 0.91×10^(-3) S cm^(-1) at 25 and 55°C,*** assembled Li|PL3Z/PA|Li battery can be cycled stably for more than 1000 h at a current density of 0.1 m A cm^(-2) without short circuit being pierced by lithium *** specific capacity of the LFP|PL3Z/PA|Li battery was 160.5 m Ah g^(-1) under a current density of 0.5 C,and the capacity retention rate was 90.0%after 300 cycles.