Enhancing the electrochromic stability of Prussian blue based on TiO2 nanorod arrays. (22nd January 2020)

• Record Type: Journal Article
• Authors: Xu, Hongbo; Gong, Liuting; Zhou, Shengyu; Cao, Kangli; Wang, Shen; Zhao, Jiupeng; Li, Yao
• Is Part Of: New journal of chemistry. Volume 44:Number 6(2020)
• Page Start: 2236
• Page End: 2240
• Publication Date: 2020-01-22
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c9nj05520g
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : The cyclic stability and optical modulation of Prussian blue (PB) via TiO2 nanorod arrays are enhanced. Abstract : In this paper, we report a simple two-step hydrothermal method to improve the cyclic stability and transmittance of Prussian blue (PB) with TiO2 nanorod arrays (TNRAs). TNRAs were used as a nanostructured substrate 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 the pure PB film (83.8% after 400 cycles). The improved cyclic stability was attributed to the increased adhesion between the PB film and the 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 a larger optical modulation (85.8% at 700 nm).