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Enhanced Sodium‐Ion Storage Performance of a 2D MoS 2 Anode Material Coated on Carbon Nanotubes
Author(s) -
Li Wanying,
Bashir Tariq,
Wang Jiaqi,
Zhou Shaowen,
Yang Shiqi,
Zhao Jianqing,
Gao Lijun
Publication year - 2021
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202001486
Subject(s) - anode , materials science , molybdenum disulfide , carbon nanotube , composite number , energy storage , chemical engineering , substrate (aquarium) , carbon fibers , coaxial , nanotechnology , hydrothermal circulation , composite material , electrode , chemistry , power (physics) , physics , oceanography , electrical engineering , quantum mechanics , geology , engineering
Molybdenum disulfide (MoS 2 ) is considered a promising anode material for sodium‐ion batteries (SIBs). However, it suffers from poor kinetics and rapid capacity decay. In this work, a coaxial heterostructure composed of MoS 2 nanosheets coated on carbon nanotubes (CNTs) is reported, where the MoS 2 layers are less stacked at the surface of the CNTs substrate with an enhanced interlayer spacing, which is prepared through a simple one‐pot hydrothermal preparation. The MoS 2 @CNTs composite material is proven to have superior rate performance as an anode material for SIBs, which delivers 508, 418, 359, 305, 258, and 183 mAh/g at current densities of 0.1, 0.2, 0.5, 1, 2, and 5 A/g, respectively, together with excellent cycling stability to retain 360 mAh/g after 400 cycles at 0.5 A/g, owing to the robust combination of MoS 2 and CNT components. This work offers a way to synthesize heterostructured composite materials with great performance superiority for large‐scale energy storage systems.