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Flexible Solid‐State Supercapacitor Based on Carbon Nanotube/Fe 3 O 4 /Reduced Graphene Oxide Binary Films
Author(s) -
Xie Shuxiao,
Dong Fei,
Li Jinsong
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.201803223
Subject(s) - supercapacitor , graphene , materials science , capacitance , oxide , electrolyte , carbon nanotube , electrode , nanotechnology , chemical engineering , specific surface area , composite number , current density , composite material , chemistry , catalysis , physics , engineering , metallurgy , biochemistry , quantum mechanics
A novel flexible nanoarchitecture is fabricated via the facile electrophoresis of a reduced graphene oxide (rGO) network on carbon nanotube (CNT)‐Fe 3 O 4 film for supercapacitor electrode applications. The interconnected networks of graphene with large specific surface area (248.4 m 2 g −1 ) improve the diffusion of the electrolyte ions into the electrode. The resulting supercapacitor exhibits a high specific energy density of 36.7 Wh kg −1 , specific capacitance of 275.6 F g −1 at a current density of 1 A g −1 and excellent cyclic stability with only 7.1% loss of its initial specific capacitance after 10000 change‐discharge cycles. These results suggest that such CNT‐Fe 3 O 4 ‐rGO composite is very promising for next generation high‐performance supercapacitors.