Effect of pH on the structure and morphology of W18O49 nanowires and their electrochromic properties

doi:10.1016/j.ceramint.2022.04.061

GIEC OpenIR

	Effect of pH on the structure and morphology of W18O49 nanowires and their electrochromic properties
	Cai, Xuesong 1; Xiao, Xiudi2 ; Sheng, Guizhang 2,3; Zheng, Jieyuan 2,3; Zhao, Yajie 1; Xu, Gang2
	2022-07-15
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	48 期号:14 页码:20791-20800
通讯作者	Xiao, Xiudi(xiaoxd@ms.giec.ac.cn) ; Xu, Gang(xugang@ms.giec.ac.cn)
摘要	In wet-chemistry processes, pH value is an important parameter that can be used to control the microstructures of the as-grown nanostructures. In this work, W18O49 nanowires with crystalline@amorphous core-shell structures were synthesized by controlling the pH of the precursor solutions in a hydrothermal reaction. Due to surface functionalization by ethylene glycol (EG) groups, the hydrothermally grown W18O49 nanowires could be easily dispersed in aqueous environment, thus enabling the fabrication of electrochromic thin films of W18O49 nanowires by a simple spray-drying process. The optimized W18O49 nanowire films showed a large optical modulation (AT) of 81.1% at 633 nm, short response time (coloring/bleaching time rc/rb = 7.9 s/3.9 s), good cycle stability (AT retention was 84.5% after 1000 cycles), and the excellent memory effect (the color withstood for 36000s after turning off the voltage). Furthermore, the electrochromic device (ECD) (4 x 4 cm2) based on the W18O49 nanowires exhibits a large optical modulation of 56.6%, short response time (rc = 7.6 s, rb = 2.7 s), and superior coloration efficiency (CE) of 64 cm2 C-1. Finally, by simply amplifying the developed processes, a large-area electrochromic device (10 x 10 cm2) was successfully prepared, which implies the possibility of large-area spraying process for practical applications.
关键词	Electrochromic pH crystalline@amorphous W 18 O 49 nanowires Aqueous dispersion
DOI	10.1016/j.ceramint.2022.04.061
关键词[WOS]	PERFORMANCE ; ARRAYS ; AL3+
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[22075288] ; Natural Science Foundation of Guangdong Province[2018A0303130146] ; Project of Science and Technology of Guangzhou[201904010171] ; Key R&D program of Guangzhou[202007020004]
WOS研究方向	Materials Science
项目资助者	National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province ; Project of Science and Technology of Guangzhou ; Key R&D program of Guangzhou
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000810973100002
出版者	ELSEVIER SCI LTD
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/36838
专题	中国科学院广州能源研究所
通讯作者	Xiao, Xiudi; Xu, Gang
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Guangzhou Inst Energy Convers, Chinese Acad Sci, Key Lab Renewable Energy, Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cai, Xuesong,Xiao, Xiudi,Sheng, Guizhang,et al. Effect of pH on the structure and morphology of W18O49 nanowires and their electrochromic properties[J]. CERAMICS INTERNATIONAL,2022,48(14):20791-20800.
APA	Cai, Xuesong,Xiao, Xiudi,Sheng, Guizhang,Zheng, Jieyuan,Zhao, Yajie,&Xu, Gang.(2022).Effect of pH on the structure and morphology of W18O49 nanowires and their electrochromic properties.CERAMICS INTERNATIONAL,48(14),20791-20800.
MLA	Cai, Xuesong,et al."Effect of pH on the structure and morphology of W18O49 nanowires and their electrochromic properties".CERAMICS INTERNATIONAL 48.14(2022):20791-20800.