Toward Understanding the Enhanced Pseudocapacitive Storage in 3D SnS/MXene Architectures Enabled by Engineered Surface Reactions

doi:10.1002/chem.202000795

IMR OpenIR

	Toward Understanding the Enhanced Pseudocapacitive Storage in 3D SnS/MXene Architectures Enabled by Engineered Surface Reactions
	Qin, Jinwen 1; Hao, Linlin 1; Wang, Xin 1; Jiang, Yan 1; Xie, Xi 2; Yang, Rui 2; Cao, Minhua 1
通讯作者	Cao, Minhua(caomh@bit.edu.cn)
	2020-07-28
发表期刊	CHEMISTRY-A EUROPEAN JOURNAL
ISSN	0947-6539
页码	11
摘要	The optimization of three-dimensional (3D) MXene-based electrodes with desired electrochemical performances is highly demanded. Here, a precursor-guided strategy is reported for fabricating the 3D SnS/MXene architecture with tiny SnS nanocrystals (approximate to 5 nm in size) covalently decorated on the wrinkled Ti(3)C(2)T(x)nanosheets through Ti-S bonds (denoted as SnS/Ti3C2Tx-O). The formation of Ti-S bonds between SnS and Ti(3)C(2)T(x)was confirmed by extended X-ray absorption fine structure (EXAFS). Rather than bulky SnS plates decorated on Ti3C2Tx(SnS/Ti3C2Tx-H) by one-step hydrothermal sulfidation followed by post annealing, this SnS/Ti3C2Tx-O presents size-dependent structural and dynamic properties. The as-formed 3D hierarchical structure can provide short ion-diffusion pathways and electron transport distances because of the more accessible surface sites. In addition, benefiting from the tiny SnS nanocrystals that can effectively improve Na(+)diffusion and suppress structural variation upon charge/discharge processes, the as-obtained SnS/Ti3C2Tx-O can generate pseudocapacitance-dominated storage behavior enabled by engineered surface reactions. As predicted, this electrode exhibits an enhanced Na storage capacity of 565 mAh g(-1)at 0.1 A g(-1)after 75 cycles, outperforming SnS/Ti3C2Tx-H (336 mAh g(-1)), SnS (212 mAh g(-1)), and Ti3C2Tx(104 mAh g(-1)) electrodes.
关键词	MXenes nanoparticles precursor-guided synthesis SnS sodium-ion batteries
资助者	National Natural Science Foundation of China
DOI	10.1002/chem.202000795
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[21872008] ; National Natural Science Foundation of China[21601014]
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000552752400001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：16[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/321006/139995
专题	中国科学院金属研究所
通讯作者	Cao, Minhua
作者单位	1.Beijing Inst Technol, Sch Chem & Chem Engn, Minist Educ China, Key Lab Cluster Sci, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Qin, Jinwen,Hao, Linlin,Wang, Xin,et al. Toward Understanding the Enhanced Pseudocapacitive Storage in 3D SnS/MXene Architectures Enabled by Engineered Surface Reactions[J]. CHEMISTRY-A EUROPEAN JOURNAL,2020:11.
APA	Qin, Jinwen.,Hao, Linlin.,Wang, Xin.,Jiang, Yan.,Xie, Xi.,...&Cao, Minhua.(2020).Toward Understanding the Enhanced Pseudocapacitive Storage in 3D SnS/MXene Architectures Enabled by Engineered Surface Reactions.CHEMISTRY-A EUROPEAN JOURNAL,11.
MLA	Qin, Jinwen,et al."Toward Understanding the Enhanced Pseudocapacitive Storage in 3D SnS/MXene Architectures Enabled by Engineered Surface Reactions".CHEMISTRY-A EUROPEAN JOURNAL (2020):11.