Author:Luo, H; Vaivars, G; Modibedi, Remegia M; Mathe, Mahlanyane KDate:Jul 2009The 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
Author:Lou, H; Vaivars, G; Mathe, Mahlanyane KDate:Oct 2009The 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
Author:Luo, H; Vaivars, G; Mathe, Mahlanyane KDate:Apr 2012The proton exchange membrane based on polyetheretherketone was prepared via two steps of cross-linking. The properties of the double cross-linked membrane (water uptake, proton conductivity, methanol permeability and thermal stability) have ...Read more
Author:Luo, H; Vaivars, G; Mathe, Mahlanyane K; Zheng, HaitaoDate:Aug 2009The proton exchange membrane is a key component of polymer electrolyte membrane fuel cell (PEMFC). It plays an important role, conducts protons and separates the fuel from oxidant in PEMFC. DuPont’s Nafion is a perfluorinated sulfonic acid ...Read more
Author:Mamuru, SA; Ozoemena, KI; Fukuda, T; Kobayashi, NDate:Oct 2010A novel platinum-based macrocycle, iron(II) tetrakis(diaquaplatinum)octacarboxyphthalocyanine (PtFeOCPc), was synthesised and characterised. The heterogeneous electron transfer and electrocatalytic properties of this functional material towards ...Read more
Author:Sichilalu, S; Tazvinga, Henerica; Xia, XDate:Oct 2016This paper presents an optimal energy management strategy for a grid-tied photovoltaic–wind-fuel cell hybrid power supply system. The hybrid system meets the load demand consisting of an electrical load and a heat pump water heater supplying ...Read more
Author:Luo, H; Modibedi, Remegia M; Ramulifho, T; Mathe, Mahlanyane KDate:31 Aug 2010Fuel cells are well-known electric generating devices which have higher energy conversion efficiency than heat engines and less exhaustion of carbon dioxide (CO2)1. There are several types of fuel cells. Solid oxide fuel cells (SOFC) and ...Read more
Author:Modibedi, Remegia MDate:Dec 2011Alternative energy resources are needed to alleviate the energy crisis. Fuel cells are one of the examples to help solve the problem. The main goal of this research is to reduce the amount of Pt required in fuel cells. Thus the outcome of ...Read more
Author:Motsoeneng, RG; Modibedi, Remegia M; Mathe, Mahlanyane K; Khotseng, LE; Ozoemena, KIDate:Sep 2015Surface-limited redox replacement reactions using the electrochemical atomic layer deposition (EC-ALD) technique were used to synthesize PdPt bimetallic electrocatalysts on carbon paper substrate. Electrocatalysts having different Pd:Pt ratio ...Read more
Author:Vaivars, G; Kleperis, J; Chikvaidze, G; Luo, H; Mathe, Mahlanyane KDate:Aug 2009The research on ion-exchange membranes has grown considerably in recent years with the growing interest in fuel cell technology for the automotive and portable applications. The requirements for a fuel cell membrane are the following: high ...Read more