固态聚苯胺电致变色器件的制备和性能  

Preparation and Performance of Solid-state Electrochromic Devices Based on Polyaniline

作　　者：陈丽娴[1] 卢彦婷 翁少煌[1] 周剑章[2] 林仲华[2] 

机构地区：[1]厦门大学化学化工学院化学系,厦门361005 [2]厦门大学固体表面物理化学国家重点实验室,厦门361005

出　　处：《高等学校化学学报》2009年第3期557-562,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20433040);国家基础科学人才培养基金(批准号:J0630429)资助

摘　　要：采用CeO2-TiO2复合物薄膜作为聚苯胺电致变色器件的对电极,选用聚合物固态电解质(PE:PMMA-PC-EC-L iC lO4),构筑了新型双层结构(Dual-type)聚苯胺(PANI)固态电致变色(EC)器件.用电化学现场紫外-可见光谱法表征了该EC器件(ITO|PANI||PE||CeO2-TiO2|ITO)的电致变色性能,并与单层结构(S ingle-type)EC器件(ITO|PANI||PE||ITO)进行了比较.研究结果表明,双层结构EC器件比单层结构EC器件的电致变色性能好,如响应速度快,循环寿命长.同时,考察了电解质组分对聚苯胺电致变色稳定性的影响.EC器件(ITO|PANI||PE||CeO2-TiO2|ITO)的颜色呈现由透明的黄色(-1.5 V,PANIvs.CeO2-TiO2)到蓝色(1.0 V)的可逆变化,在700 nm处的透射率由42.19%变到13.35%,经过150个循环,其透射率差仍保持不变,着色效率为152.1 cm2/C.In this paper, by polymeric electrolyte （PMMA-PC-EC-LiClO4） , we introduced CeO2-TiO2 composite as the complementary electrode of a new solid-state dual-type polyaniline eleetrochromic device（ECD）. The electrochromie performance of the dual-type ECD was characterized using in situ UV-Vis spectroscopy. Compared to single-type ECD （ ITO /PANI// PE // ITO）, the dual-type ECD showed better eleetroehromie performance such as less response time, longer cyclic lifetime. Also, the composition of the electrolyte was found to influence the cyclic stability of PANI. The optimized dual-type ECD exhibited reversible electrochro- mic behavior from yellow at bleached state （- 1.5 V） to blue at colored state （ 1.0 V PANI vs. CeO2-TiO2 ） with good cyclic stability. The transmittance of the ECD at 700 nm changed from 42. 19% to 13.35% with a coloration efficiency of 152. 1 cm^2/C.

关 键 词：聚苯胺 CeO2-TiO2复合物 电致变色器件 

分 类 号：O646[理学—物理化学]