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|Title:||Anchoring cobalt oxide nanoparticles on to the surface multiwalled carbon nanotubes for improved supercapacitive performances|
|Citation:||RSC Advances, 2015; 5(60):48426-48432|
|Publisher:||Royal Society of Chemistry|
|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|
|Appears in Collections:||Chemical Engineering publications|
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