Unprecedented Electrochromic Stability of a-WO3-x Thin Films Achieved by Using a Hybrid-Cationic Electrolyte

doi:10.1021/acsami.0c22921

CORC > 金属研究所 > 中国科学院金属研究所

	Unprecedented Electrochromic Stability of a-WO3-x Thin Films Achieved by Using a Hybrid-Cationic Electrolyte
	Guo, Junji 2; Guo, Xing 3,4; Sun, Huibin 2; Xie, Yizhu 2,7; Diao, Xungang 8; Wang, Mei 1; Zeng, Xiping 5; Zhang, Zhi-Bin 6
刊名	ACS APPLIED MATERIALS & INTERFACES
	2021-03-10
卷号	13 期号:9 页码:11067-11077
关键词	a-WO3-x thin film 1,2-PG-AlCl3 center dot 6H(2)O electrolyte open-circuit memory cyclic stability optical absorption
ISSN号	1944-8244
DOI	10.1021/acsami.0c22921
通讯作者	Xie, Yizhu(yzxie@szu.edu.cn) ; Diao, Xungang(diaoxg@buaa.edu.cn)
英文摘要	With large interstitial space volumes and fast ion diffusion pathways, amorphous metal oxides as cathodic intercalation materials for electrochromic devices have attracted attention. However, these incompact thin films normally suffer from two inevitable imperfections: self-deintercalation of guest ions and poor stability of the structure, which constitute a big obstacle toward the development of high-stable commercial applications. Here, we present a low-cost, eco-friendly hybrid cation 1,2-PG-AlCl3 center dot 6H(2)O electrolyte, in which the sputter-deposited a-WO3-x thin film can exhibit both the long-desired excellent open-circuit memory (>100 h, with zero optical loss) and super-long cycling lifetime (similar to 20,000 cycles, with 80% optical modulation), benefiting from the formation of unique Al-hydroxide-based solid electrolyte interphase during electrochromic operations. In addition, the optical absorption behaviors in a-WO3-x caused by host-guest interactions were elaborated. We demonstrated that the intervalence transfers are primarily via the "corner-sharing" related path (W5+ <-> W6+) but not the "edge-sharing" related paths (W4+ <-> W6+ and/or W4+ <-> W5+), and the small polaron/electron transfers taking place at the W-O bond-breaking positions are not allowed. Our findings might provide in-depth insights into the nature of electrochromism and provide a significant step in the realization of more stable, more excellent electrochromic applications based on amorphous metal oxides.
资助项目	Natural Science Foundation of China[51507104] ; Natural Science Foundation of China[62071307] ; China Postdoctoral Science Foundation[2019M663056] ; Electron Microscope Center of the Shenzhen University
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000629054100038
资助机构	Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Electron Microscope Center of the Shenzhen University
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/161673]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xie, Yizhu; Diao, Xungang
作者单位	1.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China 2.Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 5.Shenzhen Huake Tek Co Ltd, Shenzhen 518000, Peoples R China 6.Uppsala Univ, Div Solid State Elect, Agstromlab, S-75121 Uppsala, Sweden 7.Shenzhen Univ, Key Lab Optoelect Devices & Syst, Coll Phys & Optoelect Engn, Minist Educ & Guangdong Prov, Shenzhen 518060, Peoples R China 8.Beihang Univ, Sch Energy & Power Engn, Beijing 100191, Peoples R China
推荐引用方式 GB/T 7714	Guo, Junji,Guo, Xing,Sun, Huibin,et al. Unprecedented Electrochromic Stability of a-WO3-x Thin Films Achieved by Using a Hybrid-Cationic Electrolyte[J]. ACS APPLIED MATERIALS & INTERFACES,2021,13(9):11067-11077.
APA	Guo, Junji.,Guo, Xing.,Sun, Huibin.,Xie, Yizhu.,Diao, Xungang.,...&Zhang, Zhi-Bin.(2021).Unprecedented Electrochromic Stability of a-WO3-x Thin Films Achieved by Using a Hybrid-Cationic Electrolyte.ACS APPLIED MATERIALS & INTERFACES,13(9),11067-11077.
MLA	Guo, Junji,et al."Unprecedented Electrochromic Stability of a-WO3-x Thin Films Achieved by Using a Hybrid-Cationic Electrolyte".ACS APPLIED MATERIALS & INTERFACES 13.9(2021):11067-11077.