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Enhancing the Electrochromic Stability of Prussian Blue Based on TiO2 Nanorod Arrays

Abstract

In this paper, we report a simple two-step hydrothermal method to improve the cyclic stability and transmittance of the Prussian blue (PB) with TiO2 nanorod arrays (TNRA). The TNRA were used as a nanostructure substrate and to investigate the electrochromic properties of the PB/TNRA hybrid film. The PB/TNRA film shows excellent cyclic stability (83.8% after 1000 cycles) compared with that of pure PB film (83.8% after 400 cycles). The improved cyclic stability was attributed to the increased adhesion between the PB film and substrate and the alleviated volume expansion during the ion intercalation/deintercalation process. Moreover, the TNRA can reduce the reflectivity of the PB/TNRA film and increase the loading of PB, therefore, the PB/TNRA film also shows larger optical modulation (85.8% at 700 nm) and high coloration efficiency (102.08 cm2·C-1).

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Supplementary files

Article information


Submitted
05 Nov 2019
Accepted
06 Jan 2020
First published
07 Jan 2020

New J. Chem., 2020, Accepted Manuscript
Article type
Paper

Enhancing the Electrochromic Stability of Prussian Blue Based on TiO2 Nanorod Arrays

H. Xu, L. Gong, S. Zhou, K. Cao, S. Wang, J. Zhao and Y. Li, New J. Chem., 2020, Accepted Manuscript , DOI: 10.1039/C9NJ05520G

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