Large-area electrochromic coatings - Composites of polyaniline and polyacrylate-silica hybrid set gel materials

被引：34

作者：

Jang, GW ^{[1
]}

Chen, CC ^{[1
]}

Gumbs, RW ^{[1
]}

Wei, Y ^{[1
]}

Yeh, JM ^{[1
]}

机构：

[1] DREXEL UNIV,DEPT CHEM,PHILADELPHIA,PA 19104

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1996年 / 143卷 / 08期

关键词：

D O I：

10.1149/1.1837052

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A low-cost technique for fabricating large-area electrochromic coatings is described. Polyaniline was incorporated into polyacrylate-silica hybrid sol-gel networks using suspended particles or solutions. A solution of polyaniline and poly[methyl methacrylate-co-3-(trimethoxysilyl)propyl methacrylate] can be spray- or brush-coated on transparent indium-tin oxide substrates to form robust electrochromic coatings. Silane functional groups on the polyacrylate chain act as coupling and cross-linking agents to improve surface adhesion and mechanical properties of the resulting composite coatings. These coatings showed reversible transparent to green color change when polarized at potentials between -0.4 and +0.4 V vs. Ag/AgCl in a 0.2 M LiClO4/acetonitrile electrolyte solution. The cycle lifetimes of polyaniline films were improved by incorporating the polymer in the polyacrylate-silica matrix. Electrochromic switching was demonstrated for the composite coatings in large-area all-solid-state devices.

引用

页码：2591 / 2596

页数：6

共 46 条

[11] SPECTROELECTROCHEMICAL STUDY OF POLYANILINE VERSUS POTENTIAL IN THE EQUILIBRIUM STATE [J].