DOI: 10.1016/j.scib.2020.05.006
论文题名: One-pot synthesis of hierarchical Co1–xS/NC@MoS2/C hollow nanofibers based on one-dimensional metal coordination polymers for enhanced lithium and sodium-ion storage
作者: Wang Y. ; Xie W. ; Li D. ; Han P. ; Shi L. ; Luo Y. ; Cong G. ; Li C. ; Yu J. ; Zhu C. ; Xu J.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期: 17 起始页码: 1460
结束页码: 1469
语种: 英语
中文关键词: Coordination polymer nanofiber
; Hierarchical hollow architecture
; Lithium/sodium-ion storage
; Metallic sulfides
; One-pot synthesis
英文关键词: Anodes
; Cobalt deposits
; Coordination reactions
; Doping (additives)
; Electric discharges
; Layered semiconductors
; Lithium-ion batteries
; Metal ions
; Nanofibers
; Nanoparticles
; Nanosheets
; Polymers
; Sodium-ion batteries
; Storage (materials)
; Sulfur compounds
; Coordination Polymers
; Discharge capacities
; Heterogeneous interfaces
; Hydrothermal methods
; Interlayer spacings
; Metal-coordination polymer
; Storage performance
; Theoretical capacity
; Molybdenum compounds
英文摘要: Multicomponent metal sulfides have been recognized as promising anode materials for lithium/sodium-ion storage given their enticing theoretical capacities. However, the simplification of synthetic processes and the construction of heterogeneous interfaces of multimetal sulfides remain great challenges. Herein, a hierarchical 1T-MoS2/carbon nanosheet decorated Co1–xS/N-doped carbon (Co1–xS/NC@MoS2/C) hollow nanofiber was designed and constructed via a one-pot hydrothermal method using a cobalt-based coordination polymer nanofiber. This nanofiber can transform in-situ into conductive N-doped carbon hollow fibers embedded with active Co1–xS nanoparticles, enabling the epitaxial growth of MoS2 nanosheets. Consequently, the Co1–xS/NC@MoS2/C composites achieve exceptional lithium/sodium-ion storage performance. Compared to MoS2/C microspheres and Co1–xS/NC hollow nanofibers alone, the Co1–xS/NC@MoS2/C hollow nanofibers deliver higher discharge capacities (1085.9 mAh g−1 for lithium-ion batteries (LIBs) and 748.5 mAh g−1 for sodium-ion batteries (SIBs) at 100 mA g−1), better capacity retention (910 mAh g−1 for LIBs and 636.5 mAh g−1 for SIBs after 150 cycles at 100 mA g−1), and increased cycling stability (407.2 mAh g−1 after 1000 cycles for SIBs at 1000 mA g−1). Furthermore, the kinetic analysis shows that the lithium/sodium-ion storage processes of the Co1–xS/NC@MoS2/C electrode are mainly controlled by pseudocapacitance behavior. The excellent electrochemical properties can thus be ascribed to the synergy of the MoS2/C nanosheets with the enlarged interlayer spacing, good conductivity of the carbon layers, and the Co1–xS nanoparticles embedded in the hollow nanofibers with extensive reaction sites. © 2020 Science China Press Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170081
Appears in Collections: 气候变化与战略
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作者单位: Institute of Low-dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering of Shenzhen University, Shenzhen, 518060, China
Recommended Citation:
Wang Y.,Xie W.,Li D.,et al. One-pot synthesis of hierarchical Co1–xS/NC@MoS2/C hollow nanofibers based on one-dimensional metal coordination polymers for enhanced lithium and sodium-ion storage[J]. Science Bulletin,2020-01-01,65(17)