Poly(VBMIMPF_6)/BMIMPF_6离子凝胶的制备与性能  

Preparation and Properties of Poly(VBMIMPF6)/BMIMPF6-Based Ionogels

作　　者：赵晓萌[1] 徐晓雪[1] 田月兰[1] 刘煜霖 刘云明[1] 宋洪赞[1] 

机构地区：[1]河北大学化学与环境科学学院,河北保定071002

出　　处：《高分子材料科学与工程》2017年第6期173-176,183,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21304029);河北省教育厅优秀青年基金(YQ2014025)

摘　　要：以1-乙烯基-3-丁基咪唑六氟磷酸盐(VBMIMPF6)为单体,1-丁基-3-甲基咪唑六氟磷酸盐(BMIMPF6)为溶剂和电解质,并以聚乙二醇二丙烯酸酯(PEGDA)为交联剂,采用原位紫外交联的方法制备出了一种新型聚离子液体基离子凝胶电解质。通过扫描电子显微镜、流变性能、力学拉伸和电化学交流阻抗等手段,考察了离子凝胶电解质的微观结构、流变性能、力学性能和电学性能。流变性能测试结果表明,离子凝胶具有很高的储能模量(10~4~10~5 Pa),且温度200℃内储能模量基本保持不变。拉伸性能测试结果表明,体系具有很强的力学性能且拉伸强度达到10~5 Pa数量级。电学性能测试结果表明室温下离子凝胶具有很高的电导率(10^(-4)~10^(-3)S/cm),且电导率随BMIMPF6含量的增加而增大。A new type of poly（VBMIMPF6）/BMIMPF6-based ionogel was successfully prepared via UV crosslinking method and using 1-vinyl-3-butyl imidazolium hexafluorophosphate （VBMIMPF6） as prepolymer monomer, poly（ethylene glycol） diacrylate （PEGDA） as cross-linker, 1-butyl-3-methyl imidazolium hexafluorophosphate （BMIMPF6） as solvent and liquid electrolyte. The microstructures, rheological, mechanical and electrochemical properties of ionogels were characterized by scanning electron microscopy （SEM）, rotational rheometer, tensile stage and electrochemical workstation. SEM results indicate that the obtained crosslinked poly（VBMIMPF6）/BMIMPF6-based ionogels have three dimensional net shaped microporous structure. The rheological results show that the storage modulus decreases with increasing the content of BMIMPF6, and the ionogels also show high temperature robustness. The tensile tests results indicate that the ionogels have good mechanical properties and the tensile strength decreases with increasing the content of BMIMPF6. More importantly, the ionogels could reach a high ionic conductivity （10-4～10-3 S/cm） and the ionic conductivity increases with increasing the content of BMIMPF6. The above results demonstrate that this method provides an important theoretical basis for preparation and application of this new type of ionogel electrolyte.

关 键 词：离子凝胶 聚离子液体 化学交联 离子电导率 

分 类 号：TB383[一般工业技术—材料科学与工程]