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

文献类型：期刊论文

作者Cai, Xuesong1; Xiao, Xiudi2; Sheng, Guizhang2,3; Zheng, Jieyuan2,3; Zhao, Yajie1; Xu, Gang2
刊名CERAMICS INTERNATIONAL
出版日期2022-07-15
卷号48期号:14页码:20791-20800
关键词Electrochromic pH crystalline@amorphous W 18 O 49 nanowires Aqueous dispersion
ISSN号0272-8842
DOI10.1016/j.ceramint.2022.04.061
通讯作者Xiao, Xiudi(xiaoxd@ms.giec.ac.cn) ; Xu, Gang(xugang@ms.giec.ac.cn)
英文摘要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.
WOS关键词PERFORMANCE ; ARRAYS ; AL3+
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
语种英语
WOS记录号WOS:000810973100002
出版者ELSEVIER SCI LTD
资助机构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
源URL[http://ir.giec.ac.cn/handle/344007/36837]  
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.

入库方式： OAI收割

来源：广州能源研究所

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