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Browsing Journal Articles by Author "Kebede, Mesfin A"

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a-MnO2 nanorod/onion-like carbon composite cathode material for aqueous zinc-ion battery

Author: Palaniyandy, Nithyadharseni ; Kebede, Mesfin A ; Raju, Kumar ; Ozoemena, KI ; Le Roux, Lukas ; Mathe, Mahlanyane K ; Jayaprakasam, R Date: May 2019 Onion-like carbon (OLC) integrated a-MnO2 nanorods (a-MnO2/OLC) composite has been studied as a viable cathode material for potential development of high-performance zinc-ion batteries (ZIBs). XRD results revealed the tetragonal phase of the ... Read more
Binderless solution processed Zn doped Co3O4 film on FTO for rapid and selective non-enzymatic glucose detection

Author: Chowdhury, M ; Cummings, F ; Kebede, Mesfin A ; Fester, V Date: Sep 2016 A simple solution based deposition process has been used to fabricate Zn doped Co(sub3)O(sub4) electrode as an electrocatalyst for non-enzymatic oxidation of glucose. XRD, HRTEM, SEM, EELS, AFM, EIS was used to characterise the electrode. The ... Read more
Carbon derivatives in performance improvement of lithium-ion battery electrodes

Author: Obodo, RM ; Nwanya, AC ; Ahmad, I ; Kebede, Mesfin A ; Ezema, FI Date: Nov 2021 Various carbon derivatives such as activated carbon, reduced graphene oxide (rGO), graphene oxide (GO), carbon nanotubes (CNTs), etc., have triggered favourable interest towards enhancing the energy storage capacity of lithium-ion batteries ... Read more
Current status and trends in spinel cathode materials for lithium-ion battery

Author: Kebede, Mesfin A ; Palaniyandy, Nithyadharseni ; Koao, LF ; Ezema, FI ; Mhlongo, MR Date: Nov 2021 Lithium-ion batteries (LIBs) are the most suitable and preferred energy storage system for powering electric vehicles (EVs), plug-in hybrid electric vehicles (PHEVs), and stationary applications owing to their attractive properties including ... Read more
Dual polymer/liquid electrolyte with BaTiO3 electrode for magnesium batteries

Author: Shela, E ; Liu, F ; Wang, T ; Farrag, M ; Liu, J ; Yacout, N ; Kebede, Mesfin A ; Sharma, N ; Fan, LZ Date: Apr 2020 With a low cost and high volumetric capacity, rechargeable magnesium batteries (RMBs) have emerged as promising candidates for post-lithium ion batteries. The kinetically sluggish Mg2+ insertion/extraction in the host lattice and the ... Read more
The effect of nickel precursors on the electrochemical properties of spinel LiMn2-xNixO4 cathode: a comparative study ofNi(NO3)2·6H2O and NiSO4·6H2O as nickel sources

Author: Kunjuzwa, Niki ; Kebede, Mesfin A ; Mathe, Mahlanyane K ; Modibedi, Remegia M Date: May 2019 A comparative study was carried out with the effect of nickel precursors on the electrochemical performance of spinel LiMn2−x Ni x O4 (x = 0, 0.1 and 0.2) cathode materials. The spinel materials were prepared by employing a low temperature ... Read more
The electrical and electrochemical properties of graphene nanoplatelets modified 75V2O5e25P2O5 glass as a promising anode material for lithium ion battery

Author: Kebede, Mesfin A ; Palaniyandy, Nithyadharseni ; Ramadan, RM ; Sheha, E Date: Feb 2018 A V2O5 anode material significantly challenged on its further development to be used in lithium ion batteries in-terms of its structural degradation, poor cyclability and low conductivity. Thus researchers started to work on composite matrix ... Read more
Electrochemical performance of two-dimensional Ti3C2-Mn3O4 nanocomposites and carbonized iron cations for hybrid supercapacitor electrodes

Author: Oyedotun, KO ; Momodu, DY ; Naguib, M ; Mirghni, AA ; Khaleed, AA ; Kebede, Mesfin A ; Manyala, Ncholu Date: Apr 2019 In this work, we present a simple two-step synthesis route to develop a cost effective high performance Ti(sub3)C(sub2)eMn(sub3)O(sub4) nanocomposite via a solvothermal process at 150 degrees celsius. The characterization of the composite ... Read more
First-principles investigation of W-V and W-Mo alloys as potential plasma facing materials (PFMs) for nuclear application bondMo alloys as potential plasma facing materials (PFMs) for nuclear application

Author: Phasha, MJ ; Bolokang, Amogelang S ; Kebede, Mesfin A Date: Feb 2021 Density-functional theory (DFT) based first-principles calculations were used to investigate the crystal structure, binding energy, phase stability and elastic properties of body-centered cubic (BCC) W-based binary solid solutions. The effect ... Read more
High-voltage LiNi0.5Mn1.5O4-d spinel material synthesized by microwave-assisted thermo-polymerization: some insights into the microwave-enhancing physico-chemistry

Author: Kebede, Mesfin A ; Yannopoulos, SN ; Sygellou, L ; Ozoemena, KI Date: Oct 2017 Oxygen-deficient pristine (LMNO) and microwave-treated LiMn1.5Ni0.5O4-d (LMNOmic) cathode materials have been synthesized with modified thermo-polymerization synthesis technique. The XRD, XPS, CV and charge/discharge voltage profile analysis ... Read more
Identifying surface degradation, mechanical failure, and thermal instability phenomena of high energy density Ni-rich NCM cathode materials for lithium-ion batteries: A review

Author: Geldasa, FT ; Kebede, Mesfin A ; Shura, MW ; Hone, FG Date: Feb 2022 Among the existing commercial cathodes, Ni-rich NCM are the most promising candidates for next-generation LIBs because of their high energy density, relatively good rate capability, and reasonable cycling performance. However, the surface ... Read more
Manganese oxide/graphene oxide composites for high-energyaqueous asymmetric electrochemical capacitors

Author: Jafta, CJ ; Nkosi, F ; Le Roux, Lukas J ; Mathe, Mahlanyane K ; Kebede, Mesfin A ; Makgopa, K ; Song, Y ; Tong, D ; Oyama, M ; Manyala, N ; Chen, S ; Ozoemena, KI Date: Nov 2013 A high-energy aqueous asymmetric electrochemical capacitor was developed using manganese diox-ide ( -MnO2)/graphene oxide (GO) nanocomposites. The nanostructured -MnO2was prepared frommicron-sized commercial electrolytic manganese dioxide ... Read more
Microwave-assisted optimization of the manganese redox states for enhanced capacity and capacity retention of LiAl(subx)Mn(sub2-x)O(sub4) (x = 0 and 0.3) spinel materials

Author: Nkosi, FP ; Jafta, CJ ; Kebede, Mesfin A ; Le Roux, Lukas J ; Mathe, Mahlanyane K ; Ozoemena, KI Date: Mar 2015 Microwave irradiation at the pre- and post-annealing steps of the synthesis of LiAl(subx)Mn(sub2-x)O(sub4) (x = 0 and 0.3) spinel cathode materials for rechargeable lithium ion battery is a useful strategy to optimize the average manganese ... Read more
Molten salt-directed synthesis method for LiMn2O4 nanorods as a cathode material for a lithium-ion battery with superior cyclability

Author: Kebede, Mesfin A ; Ozoemena, Kenneth I Date: Feb 2017 A molten salt synthesis technique has been used to prepare nanorods of Mn2O3 and single-crystal LiMn2O4 nanorods cathode material with superior capacity retention. The molten salt-directed synthesis involved the use of NaCl as the eutectic ... Read more
Photocatalytic degradation of 2-propanol and phenol using Au loaded MnWO4 nanorod under visible light irradiation

Author: Chakraborty, AK ; Ganguli, S ; Kebede, Mesfin A Date: Jun 2012 Single crystalline MnWO4 nanorod has been prepared by low temperature hydrothermal reaction at 180 °C. The prepared MnWO4 possesses band gap of 2.63 eV. Photochemical decomposition method has been followed to disperse Au nanoparticles onto ... Read more
Preparation and characterization of WO3/Bi3O4Cl nanocomposite and its photocatalytic behavior under visible light irradiation

Author: Chakraborty, AK ; Kebede, Mesfin A Date: Jan 2012 The highly efficient and visible light ( = 420 nm) responsive composite photocatalyst WO3/Bi3O4Cl was prepared by the simple incipient wetness method. The heterojunction structure WO3/Bi3O4Cl demonstrated notably higher photocatalytic activity ... Read more
Preparation and physico-chemical investigation of anatase TiO2 nanotubes for a stable anode of lithium-ion battery

Author: Fasakin, O ; Oyedotun, KO ; Kebede, Mesfin A ; Rohwer, Mark B ; Le Roux, Lukas ; Mathe, Mahlanyane K ; Eleruja, MA ; Ajayi, EOB ; Manyala, N Date: Feb 2020 Ab-initio, anatase titanium dioxide (TiO(sup2)) nanotubes were prepared from pristine anatase titanium dioxide (TiO(sup2)) nanoparticles via a low temperature modified stirring-hydrothermal technique. Scanning electron microscope (SEM) ... Read more
Rapid and large-scale synthesis of Co3O4 octahedron particles with very high catalytic activity, good supercapacitance and unique magnetic property

Author: Chowdhury, M ; Oputu, O ; Kebede, Mesfin A ; Cummings, F ; Cespedes, O Date: Dec 2015 Scarcity of rapid and large scale synthesis of functional materials, hinders the progress from laboratory scale to commercial applications. In this study, we report a rapid and large scale synthesis of Co(Sub3)O(sub4) octahedron micron size ... Read more
Rapidly microwave-synthesized SnO2 nanorods anchored on onion-Like carbons (OLCs) as anode material for lithium-ion batteries

Author: Palaniyandy, Nithyadharseni ; Kebede, Mesfin A ; Ozoemena, KI ; Mathe, Mahlanyane K Date: Jan 2019 Nanostructured SnO2/onion-like carbon (OLC) composites were fabricated via a facile and rapid microwave-assisted synthesis technique. The influence of SnO2 nanorods anchored on OLC was investigated as an anode material for the first time in ... Read more
Recent progress in nickel oxide-based electrodes for high-performance supercapacitors

Author: Chime, UK ; Nkele, AC ; Ezugwu, S ; Nwanya, AS ; Shinde, NM ; Kebede, Mesfin A ; Ejikeme, PM ; Maaza, M ; Ezema, FI Date: Jun 2020 In recent years, interest in nanostructured electrode materials for use in supercapacitors has been on the rise. Nickel oxide has been reported as a good candidate for supercapacitor applications due to its high theoretical capacitance and ... Read more

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