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Toward Understanding the Enhanced Pseudocapacitive Storage in 3D SnS/MXene Architectures Enabled by Engineered Surface Reactions
Qin, Jinwen1; Hao, Linlin1; Wang, Xin1; Jiang, Yan1; Xie, Xi2; Yang, Rui2; Cao, Minhua1
Corresponding AuthorCao, Minhua(caomh@bit.edu.cn)
2020-07-28
Source PublicationCHEMISTRY-A EUROPEAN JOURNAL
ISSN0947-6539
Pages11
AbstractThe 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.
KeywordMXenes nanoparticles precursor-guided synthesis SnS sodium-ion batteries
Funding OrganizationNational Natural Science Foundation of China
DOI10.1002/chem.202000795
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[21872008] ; National Natural Science Foundation of China[21601014]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000552752400001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139995
Collection中国科学院金属研究所
Corresponding AuthorCao, Minhua
Affiliation1.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
Recommended Citation
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.
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