基于原位聚合离子液体凝胶的固态电致变色器件的制备及性能研究  

Study of solid-state electrochromic devices based on ionic liquid gel

作　　者：张欣妍 孙洁 秦军荣[1] 刘艳芳[1] 厉孝广 王鑫[1] 王荣[1] 

机构地区：[1]上海师范大学生命与环境科学学院 [2]上海技术学院化学与环境工程学院

出　　处：《化学研究与应用》2015年第6期822-828,共7页Chemical Research and Application

基　　金：上海市优秀青年教师专项基金项目(yyy11029)资助;上海师范大学校科研基金项目(SK201237)资助;上海师范大学重点学科基金项目资助;上海市科委启明星基金项目(07QA14044)资助

摘　　要：本文通过在离子液体BmimPF6中原位热聚合甲基丙烯酸甲酯得到了透明的离子液体凝胶。通过交流阻抗测定,当BmimPF6与甲基丙烯酸甲酯的质量比为5∶1时,离子液体凝胶的导电率为1.33×10-3Scm-1。将通过电化学沉积制得的三氧化钨(WO3)和普鲁士蓝(PB)修饰FTO电极,与上述离子液体凝胶一起组装得到了全固态的电致变色器件。原位吸收光谱数据显示所制得的电致变色器件,在±2V的工作电压下,具有稳定的电致变色响应,其着色和褪色时间分别为4.5s和4.0s,着色效率达190cm2C-1(λ=660nm)。The transparent ionic liquid gels were prepared by polymerizing MMA in BmimPF6.When the mass ratio of BmimPF6 to MMA equaling to 5 ∶1,the conductivity of the gel was estimated to be ca.1.33×10-3S cm-1.The gel was further applied in a solidstate WO3-Prussian Blue electrochromic device.Important parameters of the device performance,including its coloration efficiency,switching kinetics,and optical properties were characterized using in situ UV-vis spectroscopy.At ±2.0V working potential,the device exhibited a coloration efficiency of 190cm2C-1（λ= 660nm）,with colored and bleached times of 4.5s and 4s.

关 键 词：离子液体凝胶 电致变色器件 三氧化钨薄膜 普鲁士蓝薄膜 

分 类 号：O648.17[理学—物理化学]