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Browsing by Author "Mathe, Mahlanyane K"

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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
Anion exchange membrane based on alkali doped poly(2,5-benzimidazole) for alkaline membrane fuel cell

Author: Luo, H ; Vaivars, G ; Nonjola, S ; Rohwer, Mark B ; Mathe, Mahlanyane K Date: Mar 2010 Alkaline membrane fuel cell (AMFC) has been received increasing attention among the different types of fuel cells. Ammonium quaternized polymers such as poly (arylene ether sulfones) are being developed and studied as candidates of ionomeric ... Read more
Anion exchange membrane based on alkali doped poly(2,5-benzimidazole) for fuel cell

Author: Luo, H ; Vaivars, G ; Agboola, B ; Mu, s ; Mathe, Mahlanyane K Date: Feb 2012 The properties of alkali doped poly(2,5-benzimidazole) membrane with different alkali doping level for fuel cell application is reported in this work. The alkali doping level played an important role for the ion conductivity of the membrane. ... Read more
Automated electrodeposition of bimetallic noble-metal nanoclusters via redox-replacement reactions for electrocatalysis

Author: Mkwizu, TS ; Mathe, Mahlanyane K ; Cukrowski, I Date: 2009 Nanoclusters of bimetallic composition involving platinum with gold or ruthenium were sequentially deposited via redoxreplacement of electrodeposited sacrificial Cu adlayers for controlling the deposition of the noble metals. These steps were ... Read more
Carbon nanotubes based nafion composite membranes for fuel cell applications

Author: Cele, NP ; Ray, SS ; Kesavan Pillai, Sreejarani ; Ndwandwe, M ; Nonjola, S ; Sikhwivhilu, L ; Mathe, Mahlanyane K Date: 2009 Carbon nanotubes (CNTs) containing Nafion composite membranes were prepared via melt-blending at 250 °C. Using three different types of CNTs such as pure CNTs (pCNTs), oxidised CNTs (oCNTs) and amine functionalised CNTs (fCNTs); the effect ... Read more
Carbon supported Pd-Ni and Pd-Ru-Ni nanocatalysts for the alkaline direct ethanol fuel cell (DEFC)

Author: Modibedi, Remegia M ; Mathe, Mahlanyane K ; Ozoemena, KI Date: Sep 2011 Ethanol powered direct alcohol fuel cells (DAFCs) have attracted enormous attention as potential power sources for portable electronic devices and transportation due to the much higher energy density than gaseous fuels such as hydrogen and ... Read more
Carbon supported Pd-Ni and Pd-Ru-Ni nanocatalysts for the alkaline direct ethanol fuel cell (DEFC)

Author: Mathe, Mahlanyane K ; Modibedi, Remegia M Date: Aug 2011 Carbon supported Pd-Ni and Pd-Ru-Ni nanocatalysts were prepared by the chemical reduction method, using sodium borohydride and ethylene glycol mixture as the reducing agent. The catalytic activity towards ethanol electro-oxidation in alkaline ... Read more
Carbon supported Pd-Sn and Pd-Ru-Sn nanocatalysts for ethanol electro-oxidation in alkaline medium

Author: Modibedi, Remegia M ; Masombuka, T ; Mathe, Mahlanyane K Date: Apr 2011 Carbon supported Pd-Sn and Pd-Ru-Sn nanocatalysts were prepared by the chemical reduction method, using sodium borohydride and ethylene glycol mixture as the reducing agent. The catalytic activity towards ethanol electro-oxidation in alkaline ... Read more
Characterization of an anionic-exchange membranes for direct methanol alkaline fuel cells

Author: Abuin, GC ; Nonjola, Patrick NT ; Franceschini, EA ; Izraelevitch, FH ; Mathe, Mahlanyane K ; Corti, HR Date: Jun 2010 Ammonium quaternized polymers such as poly (arylene ether sulfones) are being developed and studied as candidates of ionomeric materials for application in alkaline fuel cells, due to their low cost and promising electrochemical properties. ... Read more
Characterization of anionic-exchange membranes for direct alcohol alkaline fuel cells

Author: Abuin, GC ; Nonjola, Patrick NT ; Franceschini, E ; Izraelevitch, F ; Corti, H ; Mathe, Mahlanyane K Date: Jun 2009 Recently, alkaline direct alcohol fuel cells have received increased attention for the following reasons: anion charge carrier (OH) movement from cathode to anode, opposite to the movement of protons in proton exchange membranes (PEM), may ... Read more
Chemical modification and characterization of quaternized polysulfones.

Author: Nonjola, Patrick NT ; Mathe, Mahlanyane K ; Hietkamp, S Date: Dec 2008 Synthesis and characterization of anion-exchange membranes (AEMs) using polysulfones is described. The modification process of polysulfones involves two steps: Firstly, by introducing chloromethyl groups followed by quaternization reaction ... Read more
Chemical modification of polysulfone: composite anionic exchange membrane with TiO2 nano-particles

Author: Nonjola, Patrick NT ; Mathe, Mahlanyane K ; Modibedi, Remegia M Date: Apr 2013 Synthesis of quaternary polysulfone/Titanium dioxide (QPSf/TiO2) nanocomposite membranes by the recasting procedure as suitable electrolyte in alkaline fuel cells is described. The composite membranes were characterized by ionic conductivity ... Read more
Co-existence of Pd, Bi2O3 and CuO supported on porous activated biocarbon for electrochemical conversion and energy storage

Author: Fuku, Xolile G ; Modibedi, Remegia M ; Mkhohlakali, Andile ; Mathe, Mahlanyane K Date: Aug 2021 The co-existence of metal oxides (MO) and activated carbon (AC) causes changes in the catalytic behaviour and activity which would contribute greatly to a number of applications. Pd–AC/Bi2O3/CuO synthesized via the green process was used as ... Read more
A comparison of hydrogen storage capacity of commercial and fly ash-derived zeolite X together with their respective templated carbon derivatives

Author: Musyoka, Nicholas M ; Ren, Jianwei ; Langmi, Henrietta W ; North, Brian C ; Mathe, Mahlanyane K Date: Oct 2015 This paper presents comparative results of structural, morphological and hydrogen sorption properties between commercial and fly ash-derived zeolite X including their respective templated carbon derivatives. The surface area of commercial ... Read more
Covalent-ionically cross-linked polyetheretherketone proton exchange membrane for direct methanol fuel cell

Author: Luo, H ; Vaivars, G ; Mathe, Mahlanyane K Date: Aug 2010 In this paper, the proton exchange membrane prepared by covalent-ionically crosslinking water soluble sulfonated-sulfinated poly(oxa-p-phenylene-3,3-phthalido-pphenylene- oxa-p-phenylene-oxy-phenylene) (SsPEEK-WC) is reported. Compared with ... Read more
Covalently cross-linked polyetheretherketone proton exchange membrane for DMFC

Author: Luo, H ; Vaivars, G ; Modibedi, Remegia M ; Mathe, Mahlanyane K Date: May 2009 The proton exchange membrane was prepared by covalent cross-linking sulfonated-sulfinated polyetheretherketone. The cross-linked membrane showed high proton conductivity (0.04 S/cm) with suitable water uptake, low methanol permeability (2.21 ... Read more
Cross-lined PEEK proton exchange membranes for fuel cell - Conference Poster

Author: Luo, H ; Vaivars, G ; Modibedi, Remegia M ; Mathe, Mahlanyane K Date: Jul 2009 The low-cost cross-linked Polyetheretherketone (PEEK) proton exchange membranes were prepared via the simple route. The membranes exhibited similar electrochemical properties as compared with commercial Nafion. The membranes were highly proton ... Read more
Cross-linked PEEK-WC proton exchange membrane for fuel cell

Author: Lou, H ; Vaivars, G ; Mathe, Mahlanyane K Date: Oct 2009 The low cost proton exchange membrane was prepared by cross-linking water soluble sulfonated-sulfinated poly(oxa-p-phenylene-3,3-phthalido-p-phenylene-oxa-p-phenylene-oxyphenylene) (SsPEEK-WC). The prepared cross-linked membrane became insoluble ... Read more
Current research trends and perspectives on materials-based hydrogen storage solutions: A critical review

Author: Ren, Jianwei ; Musyoka, Nicholas M ; Langmi, Henrietta W ; Mathe, Mahlanyane K ; Liao, S Date: Jan 2016 Effective hydrogen storage solutions have been pursued for decades, and materials-based hydrogen storage is a research frontier of much current interest. Yet, no researched materials to date have come close to the DOE 2020 targets for hydrogen ... Read more
Deposition of HgTe by electrochemical atomic layer epitaxy (EC-ALE)

Author: Venkatasamy, V ; Jayaraju, N ; Cox, SM ; Thambidurai, C ; Mathe, Mahlanyane K ; Stickney, LJ Date: Apr 2006 This paper describes the first instance of HgTe growth by electrochemical atomic layer epitaxy (EC-ALE). EC-ALE is the electrochemical analog of atomic layer epitaxy (ALE) and atomic layer deposition (ALD), all of which are based on the growth ... Read more

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