title: Hierarchical MoS2 tubular structures internally wired by carbon nanotubes as a highly stable anode material for lithium-ion batteries.
abstract: Molybdenum disulfide (MoS2), a typical two-dimensional material, is a promising anode material for lithium-ion batteries because it has three times the theoretical capacity of graphite. The main challenges associated with MoS2 anodes are the structural degradation and the low rate capability caused by the low intrinsic electric conductivity and large strain upon cycling. Here, we design hierarchical MoS2 tubular structures internally wired by carbon nanotubes (CNTs) to tackle these problems. These porous MoS2 tubular structures are constructed from building blocks of ultrathin nanosheets, which are believed to benefit the electrochemical reactions. Benefiting from the unique structural and compositional characteristics, these CNT-wired MoS2 tubular structures deliver a very high specific capacity of ~1320 mAh g(-1) at a current density of 0.1 A g(-1), exceptional rate capability, and an ultralong cycle life of up to 1000 cycles. This work may inspire new ideas for constructing high-performance electrodes for electrochemical energy storage.
authors.affiliation: School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore.
authors.forename: Yu Ming
authors.initials: YM
authors.lastname: Chen
authors.affiliation: World Class University (WCU) Department of Energy Engineering, Hanyang University, Seoul 133-791, Korea.
authors.forename: Xin Yao
authors.initials: XY
authors.lastname: Yu
authors.affiliation: School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Li
authors.affiliation: World Class University (WCU) Department of Energy Engineering, Hanyang University, Seoul 133-791, Korea.
authors.forename: Ungyu
authors.initials: U
authors.lastname: Paik
authors.affiliation: School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore.
authors.forename: Xiong Wen David
authors.initials: XW
authors.lastname: Lou
mesh_terms: D004220:Disulfides / Q000737:chemistry*; D011211:Electric Power Supplies; D055664:Electrochemical Techniques; D004566:Electrodes; D007477:Ions / Q000737:chemistry; D008094:Lithium / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D008982:Molybdenum / Q000737:chemistry*; D057139:Nanofibers / Q000737:chemistry; D037742:Nanotubes, Carbon / Q000737:chemistry*
chemical_list: D004220:Disulfides; D007477:Ions; D037742:Nanotubes, Carbon; D008982:Molybdenum; D008094:Lithium; C082964:molybdenum disulfide
keywords: Molybdenum disulfide; hollow structures; lithium-ion batteries; nanotubes