期刊
NANO LETTERS
卷 14, 期 10, 页码 5899-5904出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl502848z
关键词
Lithium-ion batteries; anode material; graphene; tungsten disulfide nanotube; sandwich type structure; electrochemical performance
类别
资金
- National Science Foundation of China (NSFC) [21373028]
- National 863 Program [2011AA11A256]
- New Century Educational Talents Plan of Chinese Education Ministry [NCET-12-0050]
- Beijing Nova Program [Z121103002512029]
- U.S. Department of Energy from the Vehicle Technologies Office, Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE) [DE-AC0206CH11357]
- Division of Materials Science, Basic Energy Sciences, Department of Energy, Office of Science. Argonne National Laboratory, a U.S. Department of Energy Office of Science laboratory [DE-AC02-06CH11357]
- Deanship of Scientific research (DSR), King Abdulaziz University, Jeddah under the HiCi Project [11-130-1434HiCi]
- DSR
Transition metal dichalcogenides (TMD), analogue of graphene, could form various dimensionalities. Similar to carbon, one-dimensional (1D) nanotube of TMD materials has wide application in hydrogen storage, Li-ion batteries, and supercapacitors due to their unique structure and properties. Here we demonstrate the feasibility of tungsten disulfide nanotubes (WS2-NTs)/graphene (GS) sandwich-type architecture as anode for lithium-ion batteries for the first time. The graphene-based hierarchical architecture plays vital roles in achieving fast electron/ion transfer, thus leading to good electrochemical performance. When evaluated as anode, WS2NTs/GS hybrid could maintain a capacity of 318.6 mA/g over 500 cycles at a current density of 1A/g. Besides, the hybrid anode does not require any additional polymetric binder, conductive additives, or a separate metal current-collector. The relatively high density of this hybrid is beneficial for high capacity per unit volume. Those characteristics make it a potential anode material for light and high-performance lithium-ion batteries.
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