Probing Charge Injection-Induced Structural Transition in Ionic Liquids Confined at the MoS2 Surface

doi:10.1021/acs.iecr.1c00955

	Probing Charge Injection-Induced Structural Transition in Ionic Liquids Confined at the MoS2 Surface
	Chen, Wei 1,2; Lu, Yumiao 1; Wang, Yanlei 1; Huo, Feng 1; Ding, Wei-Lu 1; Wei, Li 2; He, Hongyan 1
刊名	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
	2021-06-02
卷号	60 期号:21 页码:7835-7843
ISSN号	0888-5885
DOI	10.1021/acs.iecr.1c00955
英文摘要	The ability to tune structures and properties of interfacial ionic liquids (ILs) using electric fields lies at the heart of modern energy storage technologies, particularly for supercapacitors with ILs as electrolytes. Direct observation of the underlying structural change caused by charge injection is vitally important, but the data are extremely scarce. Here, we propose a general protocol to explore the dynamic structural response of interfacial ILs subjected to charge injection. The experimental results have revealed asymmetric structural evolution of interfacial ILs with a common feature of enhanced mobility during charge injection. Consequently, the surface ILs diffuse and agglomerate into various patterns, which depend critically on both the charge injection mode and initial structural feature. Slow and mild charge injection is advantageous in maintaining structural stability as well as regulating dielectric constants of interfacial ILs. Finally, we unveil the underlying energy conversion from electric energy to thermal energy that governs the structural evolution trend. Our current findings manifest a universal strategy for structural regulation of interfacial ILs via electric fields and open up opportunities for greatly accelerating charging efficiency of supercapacitors for energy storage and harvesting.
资助项目	National Science Fund for Excellent Young Scholars[21922813] ; National Natural Science Foundation of China[21908221] ; National Natural Science Foundation of China[21890762] ; National Natural Science Foundation of China[21776278] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM2020C16] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2017066]
WOS关键词	SUPERCAPACITORS ; PERFORMANCE ; INTERFACE ; STATE
WOS研究方向	Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000659430700009
资助机构	National Science Fund for Excellent Young Scholars ; National Natural Science Foundation of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/49214]
专题	中国科学院过程工程研究所
通讯作者	Lu, Yumiao; Wei, Li; He, Hongyan
作者单位	1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China 2.Dalian Polytech Univ, Coll Light Ind & Chem Engn, Dalian 116034, Peoples R China
推荐引用方式 GB/T 7714	Chen, Wei,Lu, Yumiao,Wang, Yanlei,et al. Probing Charge Injection-Induced Structural Transition in Ionic Liquids Confined at the MoS2 Surface[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2021,60(21):7835-7843.
APA	Chen, Wei.,Lu, Yumiao.,Wang, Yanlei.,Huo, Feng.,Ding, Wei-Lu.,...&He, Hongyan.(2021).Probing Charge Injection-Induced Structural Transition in Ionic Liquids Confined at the MoS2 Surface.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,60(21),7835-7843.
MLA	Chen, Wei,et al."Probing Charge Injection-Induced Structural Transition in Ionic Liquids Confined at the MoS2 Surface".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 60.21(2021):7835-7843.