Impact of polypyrrole incorporation on nickel oxide@multi walled carbon nanotube composite for application in supercapacitors |
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| Institution: | 1. Building Physics and Environment Institute, Housing & Building National Research Center (HBRC), 12311, Dokki, Giza, Egypt;2. Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha, 61413, P.O. Box 9004, Saudi Arabia;3. Advanced Functional Materials & Optoelectronic Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia;4. Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Semiconductor Lab., Metallurgical Lab. 2 Physics Department, Faculty of Education, Ain Shams University, Roxy, 11757, Cairo, Egypt;5. Spectroscopy Department, National Research Centre, 33 El-Bohouth Str., 12622, Dokki, Giza, Egypt;1. Department of Materials Science and Engineering, Chonnam National University, Gwangju 500-757, South Korea;2. Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur, 416 004 M.S., India |
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| Abstract: | In this article we report the synthesis of polypyrrole incorporated nickel oxide multi walled carbon nanotube (NiO@NMWCNT/PPy) composites by thermal reduction protocol for supercapacitor applications. The structural and morphological properties of the composites were confirmed by the aid of X-ray diffraction (XRD), Field-emission scanning electron microscope (FE-SEM) with energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and Field-emission transmission electron microscopy (FE-TEM) analysis indicating the hexagonal crystal structure of NiO decorated on NMWCNT/Ppy. The electrochemical characteristics of the NiO@MWCNT/PPy composite were analyzed in the presence of 2 M KOH as an electrolyte. The NiO@NMWCNT/PPy nanostructured composite produced a plenty of active sites for ion migration reactions that facilitate the energy storage mechanism. As a proof of concept demonstration, the NiO@NMWCNT/PPy composite was explored as an electrode materials in supercapacitor and exhibited specific capacitance of 395 F g?1 and cyclic stability up to 5000 cycles at 0.5 A g?1. Enhanced performance of composite is attributed to the incorporation of polypyrrole in NiO@NMWCNT. The improved capacitance and cyclic stability demonstrated by the composite indicates the NiO@NMWCNT/PPy to be a promising candidate for supercapacitor applications. |
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| Keywords: | Nickel oxide Nanocomposite Polymer Thermal reduction method Electrochemical performance |
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