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Browsing Physics by Author "Barzegar, Farshad"
Now showing items 1-20 of 32
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Momodu, Damilola Y.; Madito, M.J. (Moshawe); Barzegar, Farshad; Bello, Abdulhakeem; Khaleed, Abubakar A.; Olaniyan, Okikiola; Dangbegnon, Julien K.; Manyala, Ncholu I. (Springer, 2017-03)Activated carbon from tree bark (ACB) has been synthesized by a facile and environmentally friendly activation and carbonization process at different temperatures (600, 700 and 800 °C) using potassium hydroxide (KOH) ...
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Bello, Abdulhakeem; Barzegar, Farshad; Momodu, Damilola Y.; Dangbegnon, Julien K.; Taghizadeh, Fatemeh; Fabiane, Mopeli; Manyala, Ncholu I. (Elsevier, 2015-01)We present the electrochemical results of highly porous and interconnected carbon material by activation of graphene foam/polyvinyl alcohol-formaldehyde composite material designated as GF/PVA-F. Asymmetric supercapacitor ...
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Masikhwa, T.M. (Tshifhiwa); Barzegar, Farshad; Dangbegnon, Julien K.; Madito, M.J. (Moshawe); Bello, Abdulhakeem; Momodu, Damilola Y.; Manyala, Ncholu I. (Royal Society of Chemistry, 2016-04)VS2 nanosheets as the positive electrode and the activated carbon (AC) as the negative electrode with a 6 M KOH solution as electrolyte were fabricated as an asymmetric supercapacitor. These materials were combined to ...
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Manyala, Ncholu I.; Bello, Abdulhakeem; Barzegar, Farshad; Khaleed, Abubakar A.; Momodu, Damilola Y.; Dangbegnon, Julien K. (Elsevier, 2016-10)Low-cost biomass-derived activated porous carbon from natural pine cones is synthesized using hydrothermal approach followed by KOH activation and carbonization. The produced carbon materials have a high surface area of ...
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Barzegar, Farshad; Khaleed, Abubakar A.; Ugbo, F.U.; Oyeniran, K.O.; Momodu, Damilola Y.; Bello, Abdulhakeem; Dangbegnon, Julien K.; Manyala, Ncholu I. (American Institute of Physics, 2016)This work present two-step synthesizes route to low-cost mesoporous carbon from coconut shell. The electrochemical characterization of the coconut shell based activated carbon (CSAC) material as electrode for supercapacitor ...
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Barzegar, Farshad; Momodu, Damilola Y.; Zhang, Lijun; Xia, Xiaohua; Manyala, Ncholu I. (Elsevier, 2017-12)Energy storage systems (ESSs) of electric vehicles (EVs) require high energy density and high power density concurrently. The ESSs with only supercapacitors (SCs) or high performance batteries (hpBs) have egregious ...
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Madito, M.J. (Moshawe); Bello, Abdulhakeem; Dangbegnon, Julien K.; Oliphant, C.J.; Jordaan, W.A.; Momodu, Damilola Y.; Masikhwa, T.M. (Tshifhiwa); Barzegar, Farshad; Fabiane, M.; Manyala, Ncholu I. (American Institute of Physics, 2016-01-07)A bilayer graphene film obtained on copper (Cu) foil is known to have a significant fraction of non-Bernal (AB) stacking and on copper/nickel (Cu/Ni) thin films is known to grow over a large-area with AB stacking. In ...
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Khaleed, Abubakar A.; Bello, Abdulhakeem; Dangbegnon, Julien K.; Momodu, Damilola Y.; Madito, M.J. (Moshawe); Ugbo, F.U.; Akande, A.A.; Dhonge, B.P.; Barzegar, Farshad; Olaniyan, Okikiola; Mwakikunga, B.W.; Manyala, Ncholu I. (Elsevier, 2017-02)NiO/activated carbon (AC) composites were successfully synthesized via a hydrothermal reflux process as an electrode material for carbon monoxide (CO) gas sensor application. The X-ray diffraction (XRD) analysis was used ...
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Barzegar, Farshad; Dangbegnon, Julien K.; Bello, Abdulhakeem; Momodu, Damilola Y.; Johnson, Alan T. Charlie; Manyala, Ncholu I. (American Institute of Physics, 2015-09-24)This article is focused on polymer based gel electrolyte due to the fact that polymers are cheap and can be used to achieve extended potential window for improved energy density of the supercapacitor devices when compared ...
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Barzegar, Farshad; Momodu, Damilola Y.; Taghizadeh, Fatemeh; Auret, Francois Danie; Manyala, Ncholu I.; Xia, Xiaohua (Elsevier, 2019-02)This work presents the effect of electron irradiation on the full symmetric cell using the pure polymer base AC material and irradiation on the full cell was analyzed for different exposure times. An improvement of the ...
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Bello, Abdulhakeem; Fashedemi, Omobosede O.; Momodu, Damilola Y.; Barzegar, Farshad; Masikhwa, T.M. (Tshifhiwa); Madito, M.J. (Moshawe); Taghizadeh, Fatemeh; Dangbegnon, Julien K.; Manyala, Ncholu I. (Elsevier, 2015-08)A microwave irradiation method has been used to prepare mixed nickel cobalt sulfide (NixCoyS4) nanosheets with different stoichiometric composition as electrodes for electrochemical capacitors. This study has been ...
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Oyedotun, Kabir Oyeniran; Barzegar, Farshad; Mirghni, Abdulmajid Abdallah; Khaleed, Abubakar A.; Masikhwa, T.M. (Tshifhiwa); Manyala, Ncholu I. (American Chemical Society, 2019-01)In this research study, we have presented a simple two-step synthesis path to producing a cost-effective, high-porosity carbon material via acidic dehydration of white sugar. The electrochemical behavior of the activated ...
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Olaniyan, Okikiola; Mapasha, Refilwe Edwin; Momodu, Damilola Y.; Madito, M.J. (Moshawe); Kahleed, A.A.; Ugbo, F.U.; Bello, Abdulhakeem; Barzegar, Farshad; Oyedotun, Kabir Oyeniran; Manyala, Ncholu I. (Royal Society of Chemistry, 2016-09)First principles density functional theory (DFT) calculations have been performed to explore the stability, structural and electronic properties of Be and S codoped graphene sheets. The band-gap of graphene has been tuned ...
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Khaleed, Abubakar A.; Bello, Abdulhakeem; Dangbegnon, Julien K.; Ugbo, F.U.; Barzegar, Farshad; Momodu, Damilola Y.; Madito, M.J. (Moshawe); Masikhwa, T.M. (Tshifhiwa); Olaniyan, Okikiola; Manyala, Ncholu I. (Springer, 2016-06)Ni(OH)2/graphene foam (GF) electrode was synthesized for electrochemical application by a facile hydrothermal reflux technique. The results obtained from the scanning electron microscopy showed that the Ni(OH)2 spheres ...
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Masikhwa, T.M. (Tshifhiwa); Madito, M.J. (Moshawe); Momodu, Damilola Y.; Dangbegnon, Julien K.; Guellati, Ouanassa; Harat, Aicha; Guerioune, Mohamed; Barzegar, Farshad; Manyala, Ncholu I. (Royal Society of Chemistry, 2016-05)An asymmetric supercapacitor fabricated with CoAl-layered double hydroxide/graphene foam (LDH/GF) composite as the positive electrode and activated carbon derived from expanded graphite (AEG) as negative electrode in ...
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Ndiaye, Ndeye Maty; Sylla, Ndeye Fatou; Ngom, Balla Diop; Barzegar, Farshad; Momodu, Damilola Y.; Manyala, Ncholu I. (Elsevier, 2019-09)Please read abstract in the article.
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Barzegar, Farshad; Momodu, Damilola Y.; Fashedemi, Omobosede O.; Bello, Abdulhakeem; Dangbegnon, Julien K.; Manyala, Ncholu I. (Royal Society of Chemistry, 2015-12)In this study, porous activated carbons (AC) were synthesized by an environmentally friendly technique involving chemical activation and carbonization, with an in-depth experimental study carried out to understand the ...
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Bello, Abdulhakeem; Fashedemi, Omobosede O.; Barzegar, Farshad; Madito, M.J. (Moshawe); Momodu, Damilola Y.; Masikhwa, T.M. (Tshifhiwa); Dangbegnon, Julien K.; Manyala, Ncholu I. (Elsevier, 2016-10)The green chemistry route (Microwave) has been used to produce nanocomposite materials based on activated carbon (AC) and manganese (Mn) oxide nanostructures. XRD analysis revealed that amorphous and crystalline oxide ...
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Momodu, Damilola Y.; Bello, Abdulhakeem; Dangbegnon, Julien K.; Barzegar, Farshad; Fabiane, Mopeli; Manyala, Ncholu I. (Springer, 2015-02)In this paper, a simple dip-coating technique is used to deposit a P3HT:PCBM/Nickel Aluminum layered double hydroxide-graphene foam (NiAl-LDH-GF) composite onto a nickel foam (NF) serving as a current collector. A ...
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Barzegar, Farshad; Bello, Abdulhakeem; Fabiane, Mopeli; Khamlich, Saleh; Momodu, Damilola Y.; Taghizadeh, Fatemeh; Dangbegnon, Julien K.; Manyala, Ncholu I. (Elsevier, 2015-02)We report on the synthesis and characterization of electrospun polyvinyl alcohol (PVA)/graphene nanofibers. The samples produced were characterized by Raman spectroscopy for structural and defect density analysis, scanning ...
Now showing items 1-20 of 32