锂离子电解液/环氧乙烯基酯树脂固态电解质的制备与性能  

Preparation and performance of lithium ionic liquid/epoxy vinyl ester resin solid electrolyte

作　　者：赵丹妮 田芳禺 于雅琳[1] 张博明[1] 蒙邦克 冯启航 杨继萍[1] 

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100191 [2]北京博简复才技术咨询有限公司技术开发部,北京102299

出　　处：《复合材料学报》2018年第2期253-259,共7页Acta Materiae Compositae Sinica

基　　金：民用飞机专项科研(MIZ-2015-F-043)

摘　　要：将具备优良化学稳定性及高电导率的双三氟甲烷磺酰亚胺锂(LiTFSI)溶于1-乙基-3-甲基咪唑双三氟甲磺酰亚胺盐(EMIM-TFSI)离子液体中制成LiTFSI-EMIM-TFSI电解液,加入环氧乙烯基酯树脂(VER)中对其进行改性。结果表明,添加了上述电解液后的锂离子电解液/环氧乙烯基酯树脂(LiTFSI-EMIM-TFSI/VER)体系可通过FTIR检测到离子液体的特征吸收峰。随着电解液含量的增加,LiTFSI-EMIM-TFSI/VER体系的孔隙率逐渐增大,沟壑与片层结构逐渐增多。这一变化有利于锂离子的传导,提高体系的电学性能,同时可在一定程度上改善树脂的塑性和韧性,提高LiTFSI-EMIM-TFSI/VER体系的力学性能。在本实验中,当电解液含量为40wt%时,LiTFSI-EMIM-TFSI/VER体系多功能性得以最好地实现。The electrolyte was made by dissolving Lithium Bis（trifluoromethanesulfonyl）imide（LiTFSI）which had excellent chemical stability and high conductivity in 1-Ethyl-3-methylimidazolium bis（trifluoromethylsulfonyl）imide（EMIM-TFSI）ionic liquid.And the electrolyte was added to the epoxy vinyl ester resin to improve its performance.The results show that after adding the lithium electrolyte,the characteristic peak of ionic liquid can be detected by FTIR spectroscopy.As the electrolyte content increases,the porosity of the lithium ionic liquid/epoxy vinyl ester resin system gradually increases,as well as the gully and lamellar structure.This change is beneficial to the conduction of lithium ions,which can improve the electrical properties.At the same time,it can improve the plasticity and toughness of the resin to achieve better mechanical properties.In this experiment,when the electrolyte content is40 wt%,the system can achieve multifunction to the largest extend.

关 键 词：双三氟甲烷磺酰亚胺锂 离子液体 环氧乙烯基酯树脂 改性 电解质 

分 类 号：TB332[一般工业技术—材料科学与工程]