兰州大学机构库
Unraveling the improved lithium-storage mechanism by interfacial engineering based on metallic MoS2/MoN heterostructure
Zhang, Xiaqing1,3; Liu, Ziqiang3; Wei, Xuegang1; Ali, Salamat1; Lang, Junwei3; Yang, Bingjun3; Hu, Rongrong1; Qi, Jing1; Yan, Xingbin2
2023-12-05
Online publication date2023-08
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS   Impact Factor & Quartile
ISSN0925-8388 ; 1873-4669
Volume966
page numbers11
AbstractThe boom in anode materials with the splendid electrochemical performance of lithium-ion batteries (LIBs) is key to meet energy storage. As a typical anode material with the good capacity property and sandwich structure, molybdenum disulfide (MoS2) exhibited the poor lithium storage performance owing to the inferior conductivity and rapid capacity decay. Introducing a highly conductive material into MoS2 to construct a rational heterostructure is an effective strategy to tackle this challenge. Herein, we prepared MoS2 by a simple hydrothermal method and then successfully synthesized MoS2/MoN heterostructure by calcination under NH3 atmosphere. Density functional theory (DFT) calculation results show that the MoS2/MoN heterostructure with strong chemical bonding at the interface of MoS2 and MoN can enhance lithium storage, which are well verified by our experimental results. The experiment and calculation results reveal that the MoS2/MoN heterostructure shows the improved electrical conductivity after introducing metallic MoN, thus promoting the diffusion of electrons and Li+ ions. Moreover, due to the synergistic effect and the action of strong built-in electric field, the MoS2/MoN heterostructure exhibits higher initial discharge capacity and theoretical maximum capacity, as well as the better rate performance. This study offers possible approaches for the development of high-performance heterostructure-based anode materials in LIBs and other electrochemical energy storage (EES) devices.
KeywordMoS 2 MoN heterostructure Lithium -ion batteries Synergistic effect Built-in electric field Density functional theory
PublisherELSEVIER SCIENCE SA
DOI10.1016/j.jallcom.2023.171282
Indexed BySCIE
Language英语
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:001052686100001
Original Document TypeArticle
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/568925
Collection兰州大学
Corresponding AuthorQi, Jing; Yan, Xingbin
Affiliation
1.Lanzhou Univ, Sch Mat & Energy, Lanzhou 730000, Peoples R China;
2.Sun Yat Sen Univ, Sch Mat Sci & Engn, Guangzhou 510275, Peoples R China;
3.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xiaqing,Liu, Ziqiang,Wei, Xuegang,et al. Unraveling the improved lithium-storage mechanism by interfacial engineering based on metallic MoS2/MoN heterostructure[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2023,966.
APA Zhang, Xiaqing.,Liu, Ziqiang.,Wei, Xuegang.,Ali, Salamat.,Lang, Junwei.,...&Yan, Xingbin.(2023).Unraveling the improved lithium-storage mechanism by interfacial engineering based on metallic MoS2/MoN heterostructure.JOURNAL OF ALLOYS AND COMPOUNDS,966.
MLA Zhang, Xiaqing,et al."Unraveling the improved lithium-storage mechanism by interfacial engineering based on metallic MoS2/MoN heterostructure".JOURNAL OF ALLOYS AND COMPOUNDS 966(2023).
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