Constructing Conductive Bridge Arrays between Ti3C2Tx MXene Nanosheets for High-Performance Lithium-Ion Batteries and Highly Efficient Hydrogen Evolution

doi:10.1021/acs.inorgchem.9b02513

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	Constructing Conductive Bridge Arrays between Ti3C2Tx MXene Nanosheets for High-Performance Lithium-Ion Batteries and Highly Efficient Hydrogen Evolution
	Wang, Xin 1; Wang, Shuguang 1; Qin, Jinwen 1; Xie, Xi 2; Yang, Rui 2; Cao, Minhua 1
刊名	INORGANIC CHEMISTRY
	2019-12-16
卷号	58 期号:24 页码:16524-16536
ISSN号	0020-1669
DOI	10.1021/acs.inorgchem.9b02513
通讯作者	Qin, Jinwen(qjw@bit.edu.com) ; Cao, Minhua(caomh@bit.edu.cn)
英文摘要	Ti3C2Tx is a member of the MXene family with high potential for electrochemical applications, including lithium -ion batteries (LIBs) and hydrogen evolution reaction (HER). However, severe interlayer restacking not only causes a great loss of the active sites but also decreases the ionic diffusion channels, both of which significantly degrades the electrochemical performances of LIBs and HER. The common interlayer spacers could increase interlayer space but reduce the conductivity. Herein, we introduce in situ carbon nanotube (CNT) arrays between Ti3C2Tx MXene nanosheets (3D CNTs@Ti3C2Tx) as the conductive bridges for achieving a unique architecture with high conductivity, fast ion/mass transfer channels, and high exposure of the activity sites. In this architecture, 1D CNTs can not only be viewed as the interlayer spacer that prevents Ti3C2Tx MXene nanosheets from recombining but also connect with the neighbor Ti3C2Tx MXene nanosheets providing more ion/electron transport channels. Benefiting from this unique structure that could improve ion/electron transfer kinetics and capacitive contribution, 3D CNT5@Ti3C2Tx displays high specific capacity as an anode for LIBs (491 mA h g(-1) at 320 mA g(-1)). Furthermore, 3D CNTs@Ti3C2Tx. also exhibits excellent HER performance in alkaline medium (the overpotential is 93 mV at 10 mA cm(-2)) and excellent water splitting performance. This strategy that in situ construction of CNT arrays between the MXene nanosheets proves an effective method for the rational design of multifunctional energy storage/conversion materials.
资助项目	National Natural Science Foundation of China[21872008] ; National Natural Science Foundation of China[21601014]
WOS研究方向	Chemistry
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000503330800023
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/136582]
专题	金属研究所_中国科学院金属研究所
通讯作者	Qin, Jinwen; Cao, Minhua
作者单位	1.Beijing Inst Technol, Sch Chem & Chem Engn, Key Lab Cluster Sci, Minist Educ China, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xin,Wang, Shuguang,Qin, Jinwen,et al. Constructing Conductive Bridge Arrays between Ti3C2Tx MXene Nanosheets for High-Performance Lithium-Ion Batteries and Highly Efficient Hydrogen Evolution[J]. INORGANIC CHEMISTRY,2019,58(24):16524-16536.
APA	Wang, Xin,Wang, Shuguang,Qin, Jinwen,Xie, Xi,Yang, Rui,&Cao, Minhua.(2019).Constructing Conductive Bridge Arrays between Ti3C2Tx MXene Nanosheets for High-Performance Lithium-Ion Batteries and Highly Efficient Hydrogen Evolution.INORGANIC CHEMISTRY,58(24),16524-16536.
MLA	Wang, Xin,et al."Constructing Conductive Bridge Arrays between Ti3C2Tx MXene Nanosheets for High-Performance Lithium-Ion Batteries and Highly Efficient Hydrogen Evolution".INORGANIC CHEMISTRY 58.24(2019):16524-16536.