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Type: Journal article
Title: Anchoring cobalt oxide nanoparticles on to the surface multiwalled carbon nanotubes for improved supercapacitive performances
Author: Sankapal, B.
Gajare, H.
Karade, S.
Dubal, D.
Citation: RSC Advances, 2015; 5(60):48426-48432
Publisher: Royal Society of Chemistry
Issue Date: 2015
ISSN: 2046-2069
Statement of
Babasaheb R. Sankapal, Hemant B. Gajare, Swapnil S. Karade and Deepak P. Dubal
Abstract: The present work explored a novel, simple and low cost ‘dipping and drying’ process followed by a successive ionic layer adsorption and reaction (SILAR) method for the synthesis of cobalt oxide anchored multiwalled carbon nanotubes (Co₃O₄/MWNTs). Initially, MWNTs have been coated on a stainless steel substrate by a simple ‘dip and dry’ method, on which further deposition of cobalt oxide nanoparticles was carried out by the SILAR method. Our results confirm the uniform coating of Co₃O₄ nanoparticles having sizes less than 15 nm on the surface of MWNTs. Later, the electrochemical performance shows that, the Co₃O₄/MWNTs films exhibit a maximum specific capacitance of 685 F g⁻¹ in a 2 M KOH electrolyte at a scan rate of 5 mV s⁻¹ with high cycle stability of 73% over 5000 cycles. Moreover, lower electrochemical equivalent series resistance (11.25 mU) give rise to the superior performance. These results show, the potential of Co₃O₄/MWNTs composite electrodes in electrochemical supercapacitors.
Rights: This journal is © The Royal Society of Chemistry 2015
RMID: 0030065697
DOI: 10.1039/c5ra06377a
Appears in Collections:Chemical Engineering publications

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