Low self-discharge all-solid-state electrochromic asymmetric supercapacitors at wide temperature toward efficient energy storage

doi:10.1016/j.cej.2022.141022

IMR OpenIR

	Low self-discharge all-solid-state electrochromic asymmetric supercapacitors at wide temperature toward efficient energy storage
	Liu, Lei 1; Liu, Chen 2; Wang, Mengying 3; Li, Bin 4; Wang, Ke 5; Fan, Xiangqian 1; Li, Ning 1; Wang, Huiqi 1; Hu, Shengliang 1; Diao, Xungang 3
通讯作者	Liu, Lei(liulei91@nuc.edu.cn) ; Diao, Xungang(diaoxg@buaa.edu.cn)
	2023-01-15
发表期刊	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
卷号	456 页码:11
摘要	Electrochromic asymmetric supercapacitors (EASs) have attracted tremendous attention in recent years because of their potential for next-generation civilian portable and intelligent electronics. However, obtaining all -solid-state EASs with low self-discharge rates and outstanding environmental compatibility remains a crucial chal-lenge. Herein, a high-performance all-solid-state EAS was fabricated based on MnO2 positive electrochromic electrode and WO3 negative electrochromic electrode. The obtained EAS exhibits high power/energy density (991.2 W kg -1/117 Wh kg- 1 and 15840 W kg -1/44.3 Wh kg -1), superior electrochemical cycle-life (remains 98.4% of its initial capacity after 2000 continuous cycles even at 60 degrees C). Significantly, the fabricated EAS can still maintain a stable and reversible color change even in harsh environments where operating temperatures are constantly changing from-20 degrees C to 60 degrees C. In addition, the underlying self-discharge process and mechanisms of EASs were comprehensively demonstrated at various temperatures. The diffusion-controlled mechanism domi-nates in the initial discharging process at high working temperatures (such as 60 degrees C), while both charge redis-tribution and diffusion-controlled mechanism contribute equally at lower operating temperatures (such as-20 degrees C). Impressively, the EAS presents a small voltage loss (all below 18%) within 10 h when operated at extreme temperatures. This work can enlighten and promote the development of low self-discharge electro-chromic devices at widely operating temperatures for efficient energy storage.
关键词	Electrochromic Asymmetric supercapacitors All-solid-state Self-discharge Environmental compatibility
资助者	National Natural Science Foundation of China ; Fundamental Research Program of Shanxi Province ; Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi
DOI	10.1016/j.cej.2022.141022
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China ; Fundamental Research Program of Shanxi Province ; Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi ; [62205311] ; [52073007] ; [61875005] ; [52011540389] ; [22105181] ; [202103021223177] ; [20210302123029] ; [2020L0279]
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000909576900001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/175523
专题	中国科学院金属研究所
通讯作者	Liu, Lei; Diao, Xungang
作者单位	1.North Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Beihang Univ, Sch Energy & Power Engn, Beijing 100191, Peoples R China 4.Shanghai Inst Space Power Sources, Res Ctr Photovolta, Shanghai 200245, Peoples R China 5.Sci & Technol Electroopt Informat Secur Control La, Tianjin 300308, Peoples R China
推荐引用方式 GB/T 7714	Liu, Lei,Liu, Chen,Wang, Mengying,et al. Low self-discharge all-solid-state electrochromic asymmetric supercapacitors at wide temperature toward efficient energy storage[J]. CHEMICAL ENGINEERING JOURNAL,2023,456:11.
APA	Liu, Lei.,Liu, Chen.,Wang, Mengying.,Li, Bin.,Wang, Ke.,...&Diao, Xungang.(2023).Low self-discharge all-solid-state electrochromic asymmetric supercapacitors at wide temperature toward efficient energy storage.CHEMICAL ENGINEERING JOURNAL,456,11.
MLA	Liu, Lei,et al."Low self-discharge all-solid-state electrochromic asymmetric supercapacitors at wide temperature toward efficient energy storage".CHEMICAL ENGINEERING JOURNAL 456(2023):11.