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Synthesis of Nickel Ferrite Nanoparticles Supported on Graphene Nanosheets as Composite Electrodes for High Performance Supercapacitor
Author(s) -
Soam Ankur,
Kumar Rahul,
Sahoo Prasanta Kumar,
Mahender C.,
Kumar Balwant,
Arya Nitin,
Singh Mamraj,
Parida Smrutiranjan,
Dusane Rajiv O
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.201901117
Subject(s) - dielectric spectroscopy , materials science , graphene , supercapacitor , cyclic voltammetry , nanocomposite , electrode , chemical engineering , electrochemistry , scanning electron microscope , x ray photoelectron spectroscopy , nickel , nanotechnology , composite material , metallurgy , chemistry , engineering
This study presents a fabrication and electrochemical properties of nickel ferrite/graphene nanocomposite as electrodes material for supercapacitor application. The as‐prepared electrode was characterized using X‐ray diffraction, scanning electron microscopy, transmission electron microscopy and X‐ray photoelectron spectroscopy. The electrochemical properties were measured using cyclic voltammetry, galvanostatic charging/discharging methods and electrochemical impedance spectroscopy. Graphene nanosheets play an important role of governing the morphology of the electrode material and thereby enhancing the electrochemical performance of the composite electrode. The specific capacitance of 207 F/g is obtained for nickel ferrite/graphene nanocomposite, which is almost 4 times larger than pure nickel ferrite. The nanocomposite showed a stable capacitance of 95% after 1000 cycles in 1 M Na 2 SO 4 electrolyte. Electrochemical impedance spectroscopy results indicate that graphene nanosheets reduced the charge transfer resistance on the composite electrode. The obtained results show that the nanocomposite has a great potential to be used in supercapacitor with good electrochemical performance and longer cycle stability.