Author:Maxakato, NW; Ozoemena, KI; Arendse, CJDate:2008Fuel Cells (FC) employing methanol are extremely attractive as power sources for portable applications. One of the keys to the development of FC is to find a new and improved electrocatalyst. During methanol electro-oxidation on platinum (Pt) ...Read more
Author:Mathe, Mahlanyane K; Mkwizu, T; Modibedi, Remegia MDate:2012The CSIR undertakes research in the Electrocatalysis of fuel cells and for hydrogen production. The Hydrogen South Africa (HySA) strategy supports research on electrocatalysts due to their importance to the national beneficiation strategy. ...Read more
Author:Adekunle, AS; Agboola, BO; Pillay, J; Ozoemena, KIDate:Jun 2010Electrochemical sensors using edge-plane pyrolytic graphite electrode (EPPGEs) modified with singlewall carbon nanotubes–iron (III) oxide (SWCNT/Fe2O3) nanoparticles for the sensitive detection of dopamine (DA) are described for the first ...Read more
Author:Fuku, Xolile G; Modibedi, Remegia MDate:Dec 2019Nanoscience has shown itself to be one of the most exciting areas in science, with experimental developments being driven by pressing demands for new technological applications. It is a highly multidisciplinary research field, and the ...Read more
Author:Adekunle, AS; Ozoemena, KIDate:Nov 2010In this work, edged plane pyrolytic graphite electrode EPPGE was modified with functionalised single-walled carbon nanotubes and Prussian blue nanoparticles (PB). The modified electrode was characterised by techniques such as TEM, FTIR, XPS, ...Read more
Author:Ramulifho, T; Ozoemena, KI; Modibedi, Remegia M; Jafta, CJ; Mathe, Mahlanyane KDate:Apr 2013Electrocatalytic oxidation of ethylene glycol (EG) in alkaline medium using nano-scaled palladium-based bimetallic catalysts (PdM, where M = Ni and Sn) supported on sulfonated multi-walled carbon nanotubes (SF-MWCNTs) is compared. The bimetallic ...Read more
Author:Matseke, Mphoma S; Zheng, Haitao; Mallick, KaushikDate:Nov 2019Spinel metal oxides with the general formula of AB(sub2)O(sub4) have attracted a lot of attention over the past few decades as promising cathode materials for oxygen reduction reaction (ORR) in fuel cells. This is due to their changeable ...Read more
Author:Adekunle, AS; Farah, AM; Pillay, J; Ozoemena, KI; Mamba, BB; Agboola, BODate:Jun 2012Edged plane pyrolytic graphite electrode (EPPGE) was modified with and without Prussian blue (PB) nanoparticles and polyaminobenzene sulphonated single-walled carbon nanotubes (SWCNTPABS) using the chemical deposition method. The electrodes ...Read more
Author:Modibedi, Remegia M; Louw, EK; Mathe, Mahlanyane K; Ozoemena, KIDate:2013Electrodeposition of Pt and Pd metal by surface limited redox replacement reactions was performed using the electrochemical atomic layer deposition. Carbon paper and Ni foam were used as substrates for metal deposition. Supported Pt and Pd ...Read more
Author:Modibedi, Remegia M; Louw, EK; Ozoemena, KI; Mathe, Mahlanyane KDate:Oct 2012Electrodeposition of Pt and Pd metal by surface limited redox replacement reactions was performed using the electrochemical atomic layer deposition. Carbon paper and Ni foam were used as substrates for metal deposition. Supported Pt and Pd ...Read more
Author:Louw, EK; Modibedi, Remegia M; Ozoemena, K; Mathe, Mahlanyane KDate:Jul 2012The cost of the platinum catalyst hinders the progress of direct methanol fuel cells (DMFCs) into the commercial world. Electrochemical atomic layer deposition (ECALD) method was used to reduce the amount of Pt used and to increase its ...Read more
Author:Chidembo, AT; Ozoemena, KIDate:Nov 2010Electrochemical capacitive behaviour of the electropolymeric nickel tetra-aminophthalocyanine (poly-NiTAPc) supported on multiwalled carbon nanotube (MWCNT) platform is described. From the data in 1 M H2SO4, the MWCNT-poly-NiTAPc exhibited ...Read more
Author:Lekitima, JN; Ozoemena, KI; Kobayashi, NDate:Nov 2013A nitrogen-enriched metallophthalocyanine, Cobalt (II)tetrapyrazinoporphyrazine (CoTPyzPz), modified with acid or phenylamine functionalized multiwalled carbon nanotubes
(MWCNTaf and MWCNTPhNH2) have been studied for application as an ...Read more
Author:Ama, Monday O; Khoele, Khotso; Ray, Suprakas SDate:Nov 2018In avoidance of metal ions into the human bloodstream, Ti6Al7Nb became a subsequent alloy for various implant’s purpose. In this study, different corrosion techniques have been utilized to characterize corrosion behavior of Ti6Al7Nb alloy in ...Read more
Author:Agboola, BO; Pillay, J; Makgopa, K; Ozoemena, KIDate:Sep 2010The redox activities of water-soluble iron(II) tetrasulfophthalocyanine (FeTSPc) and single-walled carbon nanotube-poly(m-aminobenzene sulfonic acid) (SWCNT-PABS) adsorbed on a gold surface precoated with a self-assembled monolayer (SAM) of ...Read more
Author:Magogodi, Steven M; Mathabathe, Maria N; Bolokang, Amogelang S; Siyasiya, CDate:Nov 2022Titanium aluminides (TiAl) have attracted industrial interest, particularly for high temperature applications owing to their promising mechanical properties. Due to the application of these materials to the marine environment it is therefore ...Read more
Author:Louw, E; Modibedi, Remegia M; Cele, L; Ozeomena, K; Mathe, Mahlanyane KDate:Apr 2013There are various methods used to prepare fuel cell (FC) catalysts. The electrochemical deposition method is well known for the fabrication of nanostructured catalysts for energy materials. Electrochemical atomic layer deposition (ECALD) ...Read more
Author:Xaba, Nqobile; Modibedi, Remegia M; Mathe, Mahlanyane K; Khotseng, LEDate:Dec 2020PdBiSn thin film on Au substrate was prepared by means of the electrochemical atomic layer deposition (E-ALD) technique. The morphology and elemental distribution of the catalysts was determined using scanning electron microscope equipped ...Read more
Author:Kebede, Mesfin A; Ezema, FIDate:Nov 2019This book explores a wide range of energy storage devices, such as a lithium ion battery, sodium ion battery, magnesium ion battery and supercapacitors. Providing a comprehensive review of the current field, it also discusses the history of ...Read more