辐射研究与辐射工艺学报2026，Vol.44Issue(2)：58-72,15.DOI:10.11889/j.1000-3436.2026-0005
金属有机框架/聚甲基丙烯酸二甲氨基乙酯凝胶电解质的辐射合成及其锂金属电池性能研究
Radiation synthesis of metal-organic frameworks/poly(dimethylaminoethyl methacrylate)gel electrolytes and the performance in lithium metal batteries
摘要
Abstract
Metal-organic frameworks(MOFs),as crystalline nanoporous materials,have great potential for applications in energy and separation fields.Herein,a UiO/PDME-Li composite gel electrolyte was synthesized via γ-ray radiation using dimethylaminoethyl methacrylate as the monomer,polyethylene glycol dimethacrylate as the crosslinker in the 1 mol/L LiTFSI commercial electrolyte,and the MOF material UiO-66 as an additive.The resultant composite gel electrolyte achieved an ionic conductivity of(4.65±0.10)mS/cm and exhibited good mechanical properties,with maximum compressive strain,maximum compressive stress,and compressive modulus of(60.9±1.2)％,(63.0±7.0)kPa,and(0.180±0.002)kPa,respectively.The addition of only 0.1％UiO-66 increased the Li+transference number of the electrolyte to 0.59.A Li ‖ LiFePO4 lithium metal battery assembled with the composite gel electrolyte retained a discharge specific capacity of 129 mAh/g after 200 cycles at 0.5 C,corresponding to a capacity retention rate of 95.5％.Furthermore,a pouch battery of Li4Ti5O12 ‖ UiO/PDME-Li ‖LiFePO4 fabricated via radiation-induced in-situ preparation maintained a capacity retention rate of 77.3％after 150 cycles.The Li ‖ LiFePO4 pouch battery containing the UiO/PDME-Li electrolyte continued to work normally and powered an LED bulb even after undergoing 100 cycles of 180° bending and shear damage over 50％of its area,demonstrating excellent safety performance.关键词
金属有机框架/凝胶电解质/γ射线辐射合成/锂金属电池Key words
Metal organic frameworks/Gel electrolyte/γ-ray radiation synthesis/Lithium metal battery分类
能源科技引用本文复制引用
谢明澍,李久强,彭静,翟茂林..金属有机框架/聚甲基丙烯酸二甲氨基乙酯凝胶电解质的辐射合成及其锂金属电池性能研究[J].辐射研究与辐射工艺学报,2026,44(2):58-72,15.基金项目
国家自然科学基金(12375336)资助 Supported by National Natural Science Foundation of China(12375336) （12375336）
