Modibedi, Remegia M2012-04-032012-04-032011-12Modibedi, M. Pt deposition on carbon paper and Ti mesh substrates by surface limited redox replacement. 6th International Conference of the Africa Materials Research Society, Victoria Falls, Zimbabwe, 11-16 December 2011http://hdl.handle.net/10204/57146th International Conference of the Africa Materials Research Society, Victoria Falls, Zimbabwe, 11-16 December 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 this work will be lowering the cost of fuel cells in order to compete with current market technologies including gasoline internal combustion engines. The Electrochemical Atomic Layer Deposition (EC-ALD) technique was used to deposit Pt nanoparticles on cabon paper, the material used as gas diffusion layer for proton exchange membrane fuel cells (PEMFCs) and Ti-mesh. The deposition uses multiple redox replacement of underpotentially deposited Cu used as a sacrificial metal. The morphology and particle size of the deposited Pt nanoparticles were characterised using microscopy techniques. Pt composition on the substrates was estimated using energy dispersive X-ray spectroscopy (EDX). The electrochemical performance of the nanostuctures towards hydrogen and methanol oxidation as well as CO adsorption-oxidation, was investigated using cyclic voltammetry. These materials will be used for the fabrication of the membrane electrode assembly for fuel cell application.enFuel cellTi meshCarbon paperElectrochemical depositionSurface limited redox reactionConference PresentationModibedi, R. M. (2011). Pt deposition on carbon paper and Ti mesh substrates by surface limited redox replacement. http://hdl.handle.net/10204/5714Modibedi, Remegia M. "Pt deposition on carbon paper and Ti mesh substrates by surface limited redox replacement." (2011): http://hdl.handle.net/10204/5714Modibedi RM, Pt deposition on carbon paper and Ti mesh substrates by surface limited redox replacement; 2011. http://hdl.handle.net/10204/5714 .TY - Conference Presentation AU - Modibedi, Remegia M AB - Alternative 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 this work will be lowering the cost of fuel cells in order to compete with current market technologies including gasoline internal combustion engines. The Electrochemical Atomic Layer Deposition (EC-ALD) technique was used to deposit Pt nanoparticles on cabon paper, the material used as gas diffusion layer for proton exchange membrane fuel cells (PEMFCs) and Ti-mesh. The deposition uses multiple redox replacement of underpotentially deposited Cu used as a sacrificial metal. The morphology and particle size of the deposited Pt nanoparticles were characterised using microscopy techniques. Pt composition on the substrates was estimated using energy dispersive X-ray spectroscopy (EDX). The electrochemical performance of the nanostuctures towards hydrogen and methanol oxidation as well as CO adsorption-oxidation, was investigated using cyclic voltammetry. These materials will be used for the fabrication of the membrane electrode assembly for fuel cell application. DA - 2011-12 DB - ResearchSpace DP - CSIR KW - Fuel cell KW - Ti mesh KW - Carbon paper KW - Electrochemical deposition KW - Surface limited redox reaction LK - https://researchspace.csir.co.za PY - 2011 T1 - Pt deposition on carbon paper and Ti mesh substrates by surface limited redox replacement TI - Pt deposition on carbon paper and Ti mesh substrates by surface limited redox replacement UR - http://hdl.handle.net/10204/5714 ER -