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Facile and High‐Efficient Synthesis of High‐Performance Supercapacitor Electrode Materials Based on the Synergistic Intercalation and Oxidation of Layered Tungsten Disulfide
Author(s) -
Tang XingYan,
Li MengFan,
Gao LiFang,
Yan Han,
Deng SiMing,
Fan JianBiao,
Zheng MingSen,
Deng ShunLiu,
Zhang QianYan,
Xie SuYuan,
Zheng LanSun
Publication year - 2019
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201901122
Subject(s) - materials science , supercapacitor , nanosheet , mesoporous material , electrode , intercalation (chemistry) , current density , tungsten disulfide , electrochemistry , chemical engineering , tungsten , capacitance , oxide , molybdenum disulfide , nanotechnology , inorganic chemistry , catalysis , composite material , chemistry , metallurgy , organic chemistry , physics , quantum mechanics , engineering
The electrochemical performance of tungsten oxide (WO 3 ) is closely related to its morphology and lattice symmetry. However, current synthetic approaches are typically limited by product controllability, environmental friendliness, and low scalability. Here, a facile and high‐efficient synthesis is reported of WO 3 nanosheets based on the synergistic intercalation and oxidation of layered tungsten disulfide (WS 2 ). The complete conversion from WS 2 to WO 3 is confirmed by crystallographic, spectroscopic, microscopic, and elemental analysis. The prepared WO 3 nanosheets exhibit a superior specific capacitance of 480 F g −1 at a current density of 1 A g −1 and a good cycling stability at a current density of 10 A g −1 . Notably, benefitting from the 2D nanosheet structure and the high lattice symmetry, the cubic WO 3 nanosheets possess a high specific capacitance of 384 F g −1 at a high current density of 20 A g −1 , which is much higher than that of other WO 3 ‐based electrode materials.