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High‐Energy‐Density Supercapacitors Based on Patronite/Single‐Walled Carbon Nanotubes/Reduced Graphene Oxide Hybrids
Author(s) -
Ratha Satyajit,
Marri Subba R.,
Behera J. N.,
Rout Chandra Sekhar
Publication year - 2016
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201501001
Subject(s) - supercapacitor , graphene , capacitance , chemistry , carbon nanotube , oxide , hybrid material , energy storage , hydrothermal circulation , electrochemistry , electrode , carbon fibers , nanotechnology , metal , chemical engineering , materials science , composite number , composite material , organic chemistry , power (physics) , physics , quantum mechanics , engineering
The facile hydrothermal synthesis of a patronite VS 4 /single‐walled carbon nanotube/reduced graphene oxide hybrid is reported. Detailed electrochemical investigations of the hybrid revealed an exceptionally high energy density of ca. 174 W h/kg. A comparison of this value with those of other supercapacitor electrodes based on metal sulfides and also some with high energy‐density values revealed the potential of the patronite hybrid as a fitting candidate for possible application in energy‐storage devices. Charge–discharge stability measurements showed the excellent specific capacitance of the hybrid, which has a retention capability of ca. 97 % after 1000 continuous charge–discharge cycles.