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Vertically MoS 2 on Reduced Graphene Oxide with Superior Durability for Quasi‐solid‐state Supercapacitor
Author(s) -
Li Huijun,
Jiang Nianjun,
Deng Qianwen,
Wang Xiaomin
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201903517
Subject(s) - supercapacitor , graphene , materials science , molybdenum disulfide , capacitance , oxide , electrode , nanotechnology , power density , chemical engineering , hydrothermal circulation , carbon fibers , composite material , composite number , chemistry , power (physics) , metallurgy , physics , quantum mechanics , engineering
Molybdenum disulfide (MoS 2 ) is a two‐dimensional layer structure with high edge energy state, resulting in high chemical activity. It can be widely used in the supercapacitors. Herein, a novel conductive architectures of MoS 2 /reduced graphene oxide (rGO) nanosheets was immobilized on carbon cloth (CC) via hydrothermal method. The MoS 2 /rGO nanosheets are uniformly grown on CC, which can provide a higher specific surface area and increase additional active sites. The intimate contact between nanostructured MoS 2 /rGO and active CC is in favor of maintaining the stability of structure. As a result, MoS 2 /rGO as a supercapacitor electrode material shows high specific capacitance of 331 F g −1 at 0.75 A g −1 and excellent cycling stability with a specific capacitance retention of 110.7% after 15000 cycles. Moreover, the asymmetric supercapacitor is assembled and the device shows a high energy density of 29.2 Wh kg −1 and a high power density of 4517.7 W kg −1 . These results indicate that MoS 2 /rGO as an electrode material has an important application potential in supercapacitors.