title: Free-standing hierarchically sandwich-type tungsten disulfide nanotubes/graphene anode for lithium-ion batteries.
abstract: 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, WS2-NTs/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.
authors.affiliation: Beijing Key Laboratory of Environmental Science and Engineering, School of Chemical Engineering and Environment, Beijing Institute of Technology , Beijing 100081, China.
authors.forename: Renjie
authors.initials: R
authors.lastname: Chen
authors.forename: Teng
authors.initials: T
authors.lastname: Zhao
authors.forename: Weiping
authors.initials: W
authors.lastname: Wu
authors.forename: Feng
authors.initials: F
authors.lastname: Wu
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.forename: Ji
authors.initials: J
authors.lastname: Qian
authors.forename: Rui
authors.initials: R
authors.lastname: Xu
authors.forename: Huiming
authors.initials: H
authors.lastname: Wu
authors.forename: Hassan M
authors.initials: HM
authors.lastname: Albishri
authors.forename: A S
authors.initials: AS
authors.lastname: Al-Bogami
authors.forename: Deia Abd
authors.initials: DA
authors.lastname: El-Hady
authors.forename: Jun
authors.initials: J
authors.lastname: Lu
authors.forename: Khalil
authors.initials: K
authors.lastname: Amine
keywords: Lithium-ion batteries; anode material; electrochemical performance; graphene; sandwich-type structure; tungsten disulfide nanotube