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Hydrothermal Synthesis of 3D Porous Structure Bi 2 WO 6 /Reduced Graphene Oxide Hydrogels for Enhancing Supercapacitor Performance
Author(s) -
Zheng Huajun,
Yang Guang,
Chen Sanming,
Jia Yi
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201600634
Subject(s) - supercapacitor , materials science , graphene , capacitance , oxide , porosity , chemical engineering , self healing hydrogels , hydrothermal circulation , electrochemistry , electrode , nanotechnology , hydrothermal synthesis , substrate (aquarium) , composite material , polymer chemistry , chemistry , metallurgy , geology , oceanography , engineering
Three‐dimensional (3D) porous Bi 2 WO 6 /reduced graphene oxide hydrogels (BWO/rGO HGs) have been prepared via a facile one‐pot hydrothermal process for supercapacitor applications. Compared with the pristine Bi 2 WO 6 electrode, the 3D porous BWO/rGO HGs exhibit much higher capacitive performances with a specific capacitance of 268.7 F g −1 at a current density of 0.75 A g −1 and good cycling stability with 81% capacitance retention after 1000 cycles at 3 A g −1 . The remarkable electrochemical properties could be attributed to unique architecture of 3D porous rGO HGs supported Bi 2 WO 6 , which provided an excellent electrical conductivity substrate and more channels for ions diusion. The results indicate that a new synthesis route of 3D porous structure hydrogel loaded binary metal oxide have potential applications in energy storage device.
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