%0 Journal Article %A Duan Limei %A Li Jiuming %A LIU Zongrui %A WANG Bin %A WANG Xiaohong %A WANG Xiaohui %A XIE Lijuan %T Electrochromic Properties of Hybrid Mutilayer Film Based on Pressler Type Polyoxometalate P5W30, Positive Polyelectrolyte and Graphene Oxide %D 2017 %R 10.11944/j.issn.1000-0518.2017.02.160125 %J Chinese Journal of Applied Chemistry %P 233-241 %V 34 %N 2 %X

To improve the electrochromic performance of thin film [PEI/P5W30]30(PEI:polyethyleneimine), graphene oxide with large two-dimensional size and excellent electrical conductivity was incorporated. We have fabricated an organic/inorganic hybrid thin film [PEI/P5W30/PEI/GO]30 based on Preyssler-type polyoxometalate K12.5Nal.5[NaP5W30O110]·15H2O(P5W30) and graphene oxide(GO) by layer-by-layer method(LBL). The composition and growth process of the film were characterized by ultraviolet-visible(UV-Vis) spectrophotometer. We investigated the morphology by atomic force microscopy(AFM) and studied the electrochemical properties by cyclic voltammetry of the multilayers. The film displays reversible electrochromic behavior from colorless to blue when applied a redox potential, and the response time of the coloring and discoloring process are all within 10 seconds. More importantly, the electrochromic property has no obvious change after 150 cycles under double potential step at 0.75 V and -0.75 V, the electrocromic film reflects a good reversibility. The film of [PEI/P5W30/PEI/GO]30 exhibits fast response, long durability after GO embedding, and has a potential application in electrochromic devices.

%U http://yyhx.ciac.jl.cn/EN/10.11944/j.issn.1000-0518.2017.02.160125