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Hierarchical MoS2 tubular structures internally wired by carbon nanotubes as a highly stable anode material for lithium-ion batteries

Title
Hierarchical MoS2 tubular structures internally wired by carbon nanotubes as a highly stable anode material for lithium-ion batteries
Author
백운규
Keywords
EXCELLENELECTROCHEMICAL PERFORMANCE; ENHANCED PSEUDOCAPACITIVE PROPERTIES; STORAGE PROPERTIES; FACILE SYNTHESIS; HIGH-CAPACITY; LAYER MOS2; NANOFIBERS; NANOSHEETS; GRAPHENE; NANOSPHERES
Issue Date
2016-07
Publisher
merican Association for the Advancement of Science
Citation
SCIENCE ADVANCES (2016), v. 2, NO. 7, Page. 1-15
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.
URI
http://advances.sciencemag.org/content/2/7/e1600021http://repository.hanyang.ac.kr/handle/20.500.11754/74474
ISSN
2375-2548
DOI
10.1126/sciadv.1600021
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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