文献类型：期刊文献

英文题名：Self-Healing Flame-Retardant Core-Shell Polymer Electrolytes via 3D Coaxial Printing for High-Safety Lithium Metal Batteries

作者：Wang, Zhangyuan[1];Su, Zhipeng[1];Wang, Lei[1];Mo, Runwei[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200030, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China

年份：2025

卷号：25

期号：42

起止页码：15313

外文期刊名：NANO LETTERS

收录：;EI(收录号：20254319375894);WOS:【SCI-EXPANDED(收录号:WOS:001589735500001)】；

基金：This research was supported by Shanghai pilotProgram for Basic Research (grant no. 22TQ1400100-8), National Key R&D Program of China (grant no. 2022YFA1200075), Shanghai Pujiang Program (grant no. 20PJ1402500), Natural Science Foundation of Shanghai (grant no. 22ZR1416600) and the Fundamental Research Funds for the Central Universities (grant no. JKG01221673).

语种：英文

外文关键词：Flame-Retardant; Polymer Electrolyte; Core-Shell; 3D Coaxial Printing; Self-Healing; LithiumMetal Batteries

摘要：The drawbacks of flammability, low ionic conductivity and low mechanical strength limit the further development of polymer electrolytes. Here, we reported a 3D coaxial printing strategy to prepare self-healing flame-retardant core-shell polymer electrolytes for lithium metal batteries. The core-shell structure not only prevents the flame retardant from coming into direct contact with the electrolyte but also allows the flame retardant to be effectively released into the electrolyte after thermal runaway to inhibit combustion. The as-prepared polymer electrolyte exhibits an outstanding limited oxygen index (27.2%), high tensile strength and elongation at break (9.22 MPa and 67.8%), excellent cycling stability (86.53% after 250 cycles under 0.5 C), and good rate capability (126.20 mA h g-1 under 2.0 C), which exceeds previously reported flame-retardant polymer electrolytes. This work provides an effective strategy to design flame-retardant electrolytes through nanoscale dynamic cross-linking borate bonds at a molecular level for lithium metal batteries.