All-solid-state electrochromic device based on poly(butyl viologen), Prussian blue, and succinonitrile |
| |
Authors: | Tsung-Hsien Kuo Chih-Yu Hsu Kun-Mu Lee Kuo-Chuan Ho |
| |
Affiliation: | aDepartment of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan;bInstitute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan |
| |
Abstract: | A new complementary electrochromic device (ECD) is described; it is based on poly(butyl viologen) (PBV) and Prussian blue (PB) confined to the electrode surfaces. PBV is a cathodically colored organic polymer, while PB is an anodically colored inorganic material. The two electrochromic materials were individually characterized in a 0.5 M KCl aqueous solution. On the basis of their properties, a PBV–PB ECD containing a solid-state electrolyte prepared by adding lithium tetrafluoroborate (LiBF4) as a salt to succinonitrile (SN) was investigated. This all-solid-state ECD system showed good optical contrast with a coloration efficiency of ca. 163 cm2/C at 650 nm and good stability during 4000 cycles. The transmittance of the ECD at 650 nm changed from 73% (bleached) to 8% (darkened), with an applied potential of 1.7 V (−1.0 to 0.7 V) across the two electrodes. After 4000 cycles, the transmittance attenuation (ΔT) of the device was still at 86% of its original value, i.e. the ΔT value had decreased from 65% to 56%. |
| |
Keywords: | Electrochromic device Poly(butyl viologen) Plastic crystal Prussian blue Succinonitrile |
本文献已被 ScienceDirect 等数据库收录! |
|