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Methanol electro-oxidation on Pt-Ru-P/C and Pt-Ru-P/MWCNT in acidic medium

Author: Modibedi, Remegia M ; Masombuka, T ; Hietkamp, S ; Mathe, Mahlanyane K Date: Jun 2009 Pt-Ru-P was prepared by the chemical reduction method using sodium hypophoshite as a reducing agent on Vulcan XC 72 and multi-walled carbon nano-tubes (MWCNTs). Sodium citrate was added as the stabilizer during electro-catalyst preparation. ... Read more
Methanol oxidation reaction activity of microwave irradiated and heat-treated Pt/Co and Pt/Ni nano-electrocatalysts

Author: Mathe, Ntombizodwa R ; Scriba, Manfred R ; Coville, NJ Date: Nov 2014 Bimetallic Pt nanoparticles were prepared by alloying Pt with the non-noble transition metals, Co and Ni, using a conventional heat-treatment (HT) method and microwaveirradiation (MW). The resulting samples were PteCo-Ht, PteNi-HT, PteCo, MW ... Read more
Microwave-assisted pechini synthesis of Pd-Ni nanocatalyst for ethanol electro-oxidation in alkaline medium

Author: Rohwer, Mark B ; Ozoemena, K ; Modibedi, Remegia M Date: Nov 2012 Fuel cells provide a means for the direct conversion of fuels to electricity. Direct alcohol fuel cells (DAFCs) are particularly attractive because liquid fuels such as methanol or ethanol have a relatively low cost, a high volumetric energy ... Read more
Microwave-irradiation polyol synthesis of PVP-protected Pt–Ni electrocatalysts for methanol oxidation reaction

Author: Mathe, Ntombizodwa R ; Scriba, Manfred R ; Rikhotso, Rirhandzu S ; Coville, NJ Date: 2017 Bimetallic Pt–Ni nanoparticles were synthesized for use as electrocatalysts for the methanol oxidation reaction using a cost-effective microwave-irradiation synthesis procedure that offers precise temperature control. By varying the concentration ... Read more
Nanomaterials for fuel cell catalysis

Author: Ozoemena, KI ; Chen, S Date: 2016 Global experts provide an authoritative source of information on the use of electrochemical fuel cells, and in particular discuss the use of nanomaterials to enhance the performance of existing energy systems. The book covers the state of the ... Read more
Poly (2, 6-dimethyl-1, 4-phenylene)/polysulfone anion exchange membrane blended with TiO2 with improved water uptake for alkaline fuel cell application

Author: Msomi, PF ; Nonjola, Patrick N ; Ndungu, PG ; Ramontja, J Date: Oct 2020 A series of anion exchange membranes (AEM) based on poly (2, 6-dimethyl-1, 4-phenylene) (PPO) and polysulfone (PSF) blended with TiO2 were prepared and investigated. The water uptake, swelling ratio, ion exchange capacity, ion conductivity ... Read more
Ruthenium supported on nitrogen-doped carbon nanotubes for the oxygen reduction reaction in alkaline electrolyte; Poster

Author: Mabena, LF ; Modibedi, Remegia M ; Ray, Suprakas S ; Coville, NJ Date: Jul 2012 The oxygen reduction reaction (ORR) at the cathode of fuel cells plays an important role in controlling the performance of a fuel cell but the poor kinetics of the ORR hinders this performance. Currently platinum-based metals are the best ... Read more
South African hydrogen infrastructure (HySA infrastructure) for fuel cells and energy storage: Overview of a projects portfolio

Author: Bessarabov, D ; Langmi, Henrietta W ; Ren, Jianwei ; Musyoka, Nicholas M Date: May 2017 The paper provides brief introduction to the National South African Program, branded HySA (Hydrogen South Africa) as well as discusses potential business cases for deployment of hydrogen and fuel cell technology in South Africa. This paper ... Read more
Stannate materials for solar energy applications

Author: Eze, CN ; Obodo, RM ; Kebede, Mesfin A ; Ezema, FI Date: Nov 2021 Alkaline earth stannates are rare earth compounds with evidence of their attractive physical properties. Commonly, these rare earth complex oxide nanomaterials could be fabricated via conventional solid-state reactions such as coprecipitation, ... Read more
Synthesis and characterisation of alkaline anionic-exchange membranes for direct alcohol fuel cells

Author: Nonjola, Patrick NT ; Mathe, Mahlanyane K ; Hietkamp, S Date: Dec 2007 Great effort in research and development has been made over the years to improve and commercialize new electricity generating systems. To provide an alternative energy carrier, an appropriate conversion technology is needed to form high quality ... Read more
Thermal conductivity and stability of nano size carbon black filled PDMS: Fuel cell perspective

Author: Chen, H ; Botef, I ; Zheng, Haitao ; Maaza, M ; Vasudeva Rao, V ; Srinivasu, VV Date: 2011 Carbon black filled Polydimethylsiloxane (PDMS) was considered as a prospective bipolar plate material candidate for a Fuel Cell. In this perspective, thermal conductivity and stability of the composites were investigated. Samples with filler ... Read more

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Browsing by Subject "Fuel cells"

Browsing by Subject "Fuel cells"

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