文献类型：期刊文献

英文题名：Self-Healing Interfacial Cross-Links Enable Supertough Solid Polymer Electrolytes with Eliminating-Dendrite Lithium Metal Battery

作者：Fang, Biao[1];Wang, Lei[1];Wang, Zhangyuan[1];Su, Zhipeng[1];Zou, Feng[1];Mo, Runwei[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200037, Peoples R China

年份：2025

卷号：7

期号：10

起止页码：3292

外文期刊名：ACS MATERIALS LETTERS

收录：;EI(收录号：20253919236969);WOS:【SCI-EXPANDED(收录号:WOS:001562804400001)】；

基金：This work is financially supported by Shanghai pilot Program for Basic Research (No. 22TQ1400100-8), Shanghai Pujiang Program (No. 20PJ1402500), Natural Science Foundation of Shanghai (No. 22ZR1416600), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Crosslinking - Dynamics - Fillers - Fluorine compounds - Interface states - Lithium - Lithium batteries - Lithium compounds - Self-healing materials - Solid electrolytes - Solid state devices - Solid-State Batteries

摘要：The integration of solid-state inorganic fillers into polymer matrices can improve the performance of solid lithium metal batteries. However, there is poor interface interaction between the polymer matrix and solid-state inorganic fillers, which has led to the performance of solid lithium metal batteries falling far short of expectations. Here, we constructed a bridging interaction based on borate ester dynamic cross-linking to prepare a supertough and self-healing poly(vinylidene fluoride)-hexafluoropropylene/graphene oxide/borate bonds/Li6.5La3Zr1.5Ta0.5O12 solid polymer electrolyte. The electrolyte exhibits a wide electrochemical window (4.84 V), high elongation at break (205%), outstanding thermal stability (200 degrees C), and high-capacity retention (90.3% after 900 cycles under 2C). We further revealed the influence of borate ester dynamic cross-linking on the performance of solid polymer electrolyte through density functional theory calculations. This work offers insight into designing high-performance solid polymer electrolytes for solid-state batteries.