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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
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
