文献类型：期刊文献

英文题名：Interface-Engineered Strategy on Metal-Organic Framework to Chemical Stabilize PVDF-HFP as Self-Healing High-Voltage Quasi-Solid-State Electrolyte

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

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200037, 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：21

期号：39

外文期刊名：SMALL

收录：;EI(收录号：20253419012160);WOS:【SCI-EXPANDED(收录号:WOS:001550371500001)】；

基金：This research was supported by National Key R&D Program of China (2022YFA1200075), Shanghai pilotProgram for Basic Research (22TQ1400100-8), Shanghai Pujiang Program (20PJ1402500), Natural Science Foundation of Shanghai (22ZR1416600) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：capacity retention; high Voltage; mechanical properties; quasi-solid-state electrolyte; self-healing

摘要：The integration of metal organic framework (MOF) fillers into the polymer matrices is recognized as an effective strategy to improve the performance of lithium metal batteries. However, the poor interfacial interactions between the polymer matrices and MOF fillers limit their further optimization and commercial application. Here, an interface engineering strategy is proposed to prepare a self-healing high-voltage PVDF-HFP/graphene oxide/UiO-66/Borate bond (PGUB) quasi-solid-state electrolyte (QSSE), which enables a significant enhancement in the electrochemical properties of lithium metal battery. The interaction between PVDF-HFP and UiO-66 is significantly enhanced through synergistic effect of boric acid bonds and graphene oxide, which effectively expanded the electrochemical window and formed the fast Li+ transport channels, but also improved the mechanical flexibility and the ability to eliminate lithium dendrite. The PGUB QSSE exhibits extended electrochemical voltage windows (5.06 V), high elongation at break (205%), outstanding thermal stability (200 degrees C), and high-capacity retention (95.46% after 500 cycles), which is better than previously reported solid polymer electrolytes. Density functional theory calculations further reveal the mechanism of charge transfer and lithium transport performance enhancement of QSSE based on interface engineering and dynamic cross-linking. This work proposes a novel interface engineering strategy at the molecular level for next-generation high-energy batteries.