Ultrafast switching of an electrochromic device based on layered double hydroxide/Prussian blue multilayered films

Xiaoxi Liu; Awu Zhou; Yibo Dou; Ting Pan; Mingfei Shao; Jingbin Han; Min Wei

doi:10.1039/C5NR04458H

Ultrafast switching of an electrochromic device based on layered double hydroxide/Prussian blue multilayered films

Xiaoxi Liu,^a Awu Zhou,^a Yibo Dou,^a Ting Pan,^a Mingfei Shao,^a Jingbin Han*^a and Min Wei^a

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* Corresponding authors

^a State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China
E-mail: hanjb@mail.buct.edu.cn
Fax: +86-10-64425385
Tel: +86-10-64412131

Abstract

Electrochromic materials are the most important and essential components in an electrochromic device. Herein, we fabricated high-performance electrochromic films based on exfoliated layered double hydroxide (LDH) nanosheets and Prussian blue (PB) nanoparticles via the layer-by-layer assembly technique. X-ray diffraction and UV-vis absorption spectroscopy indicate a periodic layered structure with uniform and regular growth of (LDH/PB)_n ultrathin films (UTFs). The resulting (LDH/PB)_n UTF electrodes exhibit electrochromic behavior arising from the reversible K⁺ ion migration into/out of the PB lattice, which induces a change in the optical properties of the UTFs. Furthermore, an electrochromic device (ECD) based on the (LDH/PB)_n-ITO/0.1 M KCl electrolyte/ITO sandwich structure displays superior response properties (0.91/1.21 s for coloration/bleaching), a comparable coloration efficiency (68 cm² C⁻¹) and satisfactory optical contrast (45% at 700 nm), in comparison with other inorganic material-based ECDs reported previously. Therefore, this work presents a facile and cost-effective strategy to immobilize electrochemically active nanoparticles in a 2D inorganic matrix for potential application in displays, smart windows and optoelectronic devices.

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Publication details

The article was received on 03 Jul 2015, accepted on 17 Sep 2015 and first published on 18 Sep 2015

Article type: Paper

DOI: 10.1039/C5NR04458H

Author version available: Download Author version (PDF)

Citation: Nanoscale, 2015,7, 17088-17095

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Ultrafast switching of an electrochromic device based on layered double hydroxide/Prussian blue multilayered films

X. Liu, A. Zhou, Y. Dou, T. Pan, M. Shao, J. Han and M. Wei, Nanoscale, 2015, 7, 17088
DOI: 10.1039/C5NR04458H
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Nanoscale

Ultrafast switching of an electrochromic device based on layered double hydroxide/Prussian blue multilayered films

Abstract

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Ultrafast switching of an electrochromic device based on layered double hydroxide/Prussian blue multilayered films

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