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Facile Spraying Synthesis and High‐Performance Sodium Storage of Mesoporous MoS 2 /C Microspheres
Author(s) -
Lu Yanying,
Zhao Qing,
Zhang Ning,
Lei Kaixiang,
Li Fujun,
Chen Jun
Publication year - 2016
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201504062
Subject(s) - materials science , anode , mesoporous material , electrochemistry , chemical engineering , microsphere , sodium ion battery , carbon fibers , pyrolysis , sodium , nanotechnology , electrode , catalysis , composite material , composite number , organic chemistry , faraday efficiency , metallurgy , chemistry , engineering
A facile one‐step spraying synthesis of MoS 2 /C microspheres and their enhanced electrochemical performance as anode of sodium‐ion batteries is reported. An aerosol spraying pyrolysis without any template is employed to synthesize MoS 2 /C microspheres, in which ultrathin MoS 2 nanosheets (≈2 nm) with enlarged interlayers (≈0.64 nm) are homogeneously embedded in mesoporous carbon microspheres. The as‐synthesized mesoporous MoS 2 /C microspheres with 31 wt% carbon have been applied as an anode material for sodium ion batteries, demonstrating long cycling stability (390 mAh g −1 after 2500 cycles at 1.0 A g −1 ) and high rate capability (312 mAh g −1 at 10.0 A g −1 and 244 mAh g −1 at 20.0 A g −1 ). The superior electrochemical performance is due to the uniform distribution of ultrathin MoS 2 nanosheets in mesoporous carbon frameworks. This kind of structure not only effectively improves the electronic and ionic transport through MoS 2 /C microspheres, but also minimizes the influence of pulverization and aggregation of MoS 2 nanosheets during repeated sodiation and desodiation.