Open AccessConductive WO3-x@CNT networks for efficient Li-S batteries
Author(s) -
Yuanfu Chen,
Yuanfu Chen
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/892/1/012027
Subject(s) - nanodot , materials science , cathode , electrochemistry , annealing (glass) , electrical conductor , nanotechnology , conductivity , vacancy defect , chemical engineering , composite material , electrode , chemistry , crystallography , engineering
Oxygen-vacancy-containing WO 3-x nanodots homogeneously decorated on conductive CNT networks (WO 3-x @CNT) have been synthesized by a simple and industrial spray-drying approach followed by annealing. Benefiting from the enhanced conductivity of CNT networks and the effective absorption for polysulfides by ultra-small polar WO 3-x nanodots, the designed WO 3-x @CNT/S cathode demonstrates excellent electrochemical performance, with an excellent rate capability (1000.1 and 518.2 mAh g −1 at 0.2 and 3 C, respectively), a high reversible specific capacity of 754.1 mAh g −1 at 1 C after 50 cycles.