气候变化领域集成服务门户(CCPortal): 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

CCPortal

DOI	10.1016/j.scib.2020.05.006
	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
	Wang Y.; Xie W.; Li D.; Han P.; Shi L.; Luo Y.; Cong G.; Li C.; Yu J.; Zhu C.; Xu J.
发表日期	2020
ISSN	20959273
起始页码	1460
结束页码	1469
卷号	65 期号:17
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
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
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207225
作者单位	Institute of Low-dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering of Shenzhen University, Shenzhen, 518060, China
推荐引用方式 GB/T 7714	Wang Y.,Xie W.,Li D.,等. 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],2020,65(17).
APA	Wang Y..,Xie W..,Li D..,Han P..,Shi L..,...&Xu J..(2020).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.Science Bulletin,65(17).
MLA	Wang Y.,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".Science Bulletin 65.17(2020).