Author:Ncube, NM; Mhlongo, WT; McCrindle, RI; Zheng, HaitaoDate:May 2018This work investigates the electrochemical performance of Al-doped Li4Ti5O12 (LTO) on the Li site (Li4-xAlxTi5O12) and Ti site (Li4Ti5-xAlxO12) (x = 0.15), evaluated by galvanostatic charge-discharge tests and the electrochemical impedance ...Read more
Author:Khotseng, L; Bangisa, A; Modibedi, Remegia M; Linkov, VDate:Jan 2016Multi-walled carbon nanotubes (MWCNTs), TiO(sub2), MoO(sub2), and carbon black Vulcan XC-72 were investigated as supports for PtRu and PtSn catalysts. X-ray diffraction (XRD) confirmed that all electrocatalysts examined display characteristic ...Read more
Author:Nithyadharseni, P; Reddy, MV; Ozoemena, KI; Ezema, FI; Balakrishna, RGDate:Jan 2016Perovskite-like structure BaSnO(sub3) ceramic oxide has been prepared by low temperature molten salt method using KOH as a flux and Ba(OH)(sub2) and BaCl(sub2) as precursors. The as-prepared compounds were characterized by various techniques ...Read more
Author:David, K; Mhlabeni, Thobile; Luo, HDate:Apr 2013The composite material has a xLi2MnO3·(1-x)LiMO2 (M = Mn, Co, Ni) structure has been considered as one of the most promising cathode materials for advanced lithium-ion batteries due to their low-cost and high capacity (> 200 mAh g−1) between ...Read more
Author:Emeji, I; Ama, Monday O; Osifo, P; Ray, Suprakash S; García-Rodríguez, O; Lefebvre, ODate:Aug 2019This study describes how carbon-cloth (CC) electrode was demonstrated to have good electrical conductivity using linear sweep voltammetry (LSV). Its electrocatalytic activity was evaluated toward the generation of hydrogen peroxide (H2O2) via ...Read more
Author:Pillay, J; Agboola, BO; Ozoemena, KIDate:Jun 2009Electrochemical behaviour of self-assembled monolayer of 2-dimethylaminoethanethiol (DMAET) on gold electrode, with and without integration with SWCNT-poly(m-aminobenzene sulphonic acid) (SWCNT-PABS) has been probed. It is proved that the ...Read more
Author:Nwanya, AC; Jafta, CJ; Ejikeme, PM; Ugwuoke, PE; Reddy, MV; Osuji, RU; Ozoemena, KI; Ezema, FIDate:May 2014Polyanine and its nanocomposite WO3/PANI films were deposited on fluorine doped tin oxide (FTO) glassslides by simple chemical bath deposition method. The morphology structure of the composite film wasstudied using atomic force microscopy ...Read more
Author:Valdes, M; Modibedi, Remegia M; Mathe, Mahlanyane K; Hillie, T; Vazquez, MDate:May 2014Cu(sub2)ZnSnS(sub4)(CZTS) thin films have been prepared using Electrochemical Atomic Layer Deposition (EC-ALD)and also by one-step conventional constant potential electrodeposition. Optimal deposition conditionswere investigated using cyclic ...Read more
Author:Modibedi, Remegia M; Mathe, Mahlanyane K; Motsoeneng, RG; Khotseng, LE; Ozoemena, KIDate:May 2014Direct alcohol fuel cells (DAFCs) continue to extensive attention as potential power sources for portable and stationary applications. The oxygen reduction reaction (ORR) involving the four electron transfer remains a challenge for DAFCs due ...Read more
Author:Mkhohlakali, Andile; Fuku, Xolle; Modibedi, Remegia M; Khotseng, L; Mathe, MkhuluDate:Apr 2022Herein, we report electro-synthesis of BiTePd using electrochemical atomic layer deposition (E-ALD). The SEM-EDS, AFM, and XRD were used to characterize Pd-based thin films' surface morphology and structure composition. BiTePd electrocatalyst ...Read more
Author:Weideman, E; Van Rensburg, NJJDate:Feb 1982The effect of electroflotation using aluminium electrodes on the C.O.D., D.O.C and colour values of liquors containing acid, disperse, mordant and basic dyes in the presence and absence of wool grease was investigated.Read more
Author:Mkhohlakali, AC; Fuku, X; Modibedi, Remegia M; Khotseng, LE; Mathe, Mkhulu KDate:Jul 2021Electrochemical atomic layer deposition was used to form bimetallic (BiPd, CuPd) and trimetallic (CuBiPd) thin films via surface-confined reactions. Pd thin films were characterized by cyclic voltammetry, scanning electron microscopy (SEM) ...Read more
Author:Malefafana, MT; Pratt, Lawrence E; Basappa Ayanna, Manjunath; Roro, Kittessa TDate:Oct 2019Electroluminescence (EL) imaging is a non-destructive characterization technique used widely across the solar PV industry. Similar to an x-ray image, the EL image allows the analyst to peer inside the PV module and see features that are ...Read more
Author:Le Roux, Lukas J; Hietkamp, SDate:Jul 2008Dye-sensitised photoelectrochemical solar cells with four different electrolyte combinations were assembled and characterised using current voltage measurements. The effects that the solvents (acetonitrile - ACN and propionitrile - PN) have ...Read more
Author:Khamlich, S; Srinivasu, VV; Nemraoui, O; McCrindle, R; Cingo, N; Maaza, MDate:Dec 2011The quasi-spherical nanoparticles of hydrated Cr2O3 · nH2O, and crystalline -Cr2O3, have been synthesized by reduction of the first row (3d) transition metal complex of K2Cr2O7. The temperaturedependence of electron spin resonance (ESR) ...Read more
Author:Ozoemena, KI; Mathebula, NS; Pillay, J; Toschi, G; Verschoor, JADate:2010The integrity and properties of mycolic acid (MA) antigens integrated into a self-assembled monolayer (SAM) of N-(2-mercaptoethyl)octadecanamide, (MEODA), on a gold electrode have been interrogated using cyclic voltammetry (CV) and electrochemical ...Read more
Author:Adekunle, AS; Ozoemena, KIDate:Jun 2010This work describes the electron transport and electrocatalytic properties of chemically-synthesized nickel (Ni) and nickel oxide (NiO) nanoparticles supported on multi-walled carbon nanotubes (MWCNT) platforms. Successful modification of the ...Read more
Author:Verhoest, P; James, T; Marais, Mario A; Van Audenhove, LDate:May 2006This contribution presents the results of a pilot project on ICT usage by South African SMMEs in the tourism industry. The Electronic Business Survey (EBS) methodology, which was tested for applicability in a developing country, in this case ...Read more