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Construction of N-doped C@MoS2 heteroshell with the yolk of Sn nanoparticles as high-performance anodes for sodium-ion batteries
Mao, Peiyuan1,2; Wang, Yong1; Xiao, Pandeng1; Zhang, Wen1; Rao, Shun1; Wang, Zhi2
2022-02-05
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume892Pages:9
AbstractHerein, we demonstrate the reasonable design and preparation of yolk-heteroshell Sn@N-doped C@MoS2 nanospheres as anode materials in sodium-ion battery. Through an effective multi-step strategy, Sn nanoparticles are encapsulated in N-doped C nanocage surrounded by ultra-thin MoS2 nanosheets to form Sn@N-doped C@MoS2 nanospheres. In this novel structure, Sn nanoparticles with high theoretical capacity improve the space utilization inside the heteroshell; the N-doped carbon nanocage as the skeleton not only inhibits the mutual accumulation of Sn and MoS2, but also improves conductivity; the outer MoS2 ultra-thin sheets can consolidate C@MoS2 heteroshell, provide numerous active sites and favor the fast diffusion of Na+/e(-). Notably, the combination of carbon nanocage and MoS2 sheets in the yolk-heteroshell structure can effectually buffer the volume expansion of Sn nanoyolks and reinforce C@MoS2 heteroshell while reducing the carbon content. Therefore, the yolk-heteroshell structure plays a crucial role in enhanced reversible capacity and cyclic stability of Sn@N-doped C@MoS2 nanospheres, which activates their sodium storage potential. The yolk-heteroshell Sn@N-doped C@MoS2 nanospheres exhibit high reversible capacity of 488.4 mAh g(-1) at 0.1 A g(-1) after 300 cycles and long-cycle stability of 350.6 mAh g(-1) at 0.5 A g(-1) after 500 cycles. Moreover, their full cell delivers a stable reversible discharge capacity of about 80.1 mAh g(-1) after 30 cycles at 0.5 C. This work provides a feasible yolk-heteroshell strategy for Sn-based composite nanomaterials. (C) 2021 Elsevier B.V. All rights reserved.
KeywordTin Molybdenum Sulfide Yolk-heteroshell Nanostructures Sodium-ion batteries
DOI10.1016/j.jallcom.2021.162157
Language英语
WOS KeywordLITHIUM-ION ; AT-C ; HIGH-CAPACITY ; CARBON ; MOS2 ; NANOSHEETS ; NANOCOMPOSITES ; MICROSPHERES ; COMPOSITES ; NANOFIBERS
Funding ProjectState Key Program of Natural Science Foundation of China[51934006] ; OpenResearch Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2019-D-02]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationState Key Program of Natural Science Foundation of China ; OpenResearch Fund of State Key Laboratory of Multiphase Complex Systems
WOS IDWOS:000705005600002
PublisherELSEVIER SCIENCE SA
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50461
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Yong; Wang, Zhi
Affiliation1.Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Mao, Peiyuan,Wang, Yong,Xiao, Pandeng,et al. Construction of N-doped C@MoS2 heteroshell with the yolk of Sn nanoparticles as high-performance anodes for sodium-ion batteries[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,892:9.
APA Mao, Peiyuan,Wang, Yong,Xiao, Pandeng,Zhang, Wen,Rao, Shun,&Wang, Zhi.(2022).Construction of N-doped C@MoS2 heteroshell with the yolk of Sn nanoparticles as high-performance anodes for sodium-ion batteries.JOURNAL OF ALLOYS AND COMPOUNDS,892,9.
MLA Mao, Peiyuan,et al."Construction of N-doped C@MoS2 heteroshell with the yolk of Sn nanoparticles as high-performance anodes for sodium-ion batteries".JOURNAL OF ALLOYS AND COMPOUNDS 892(2022):9.
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