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Showing 1 to 8 of 8 for “"non-platinum"”.
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The effectivness of using a non-platinum material combination for the catalyst layer of a proton exchange membrane fuel cell
Submitted in the fulfilment of the requirements for the Master of Engineering, Durban University of Technology, Durban, South Africa, 2016.
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NON-PLATINUM GROUP METAL OXGYEN REDUCTION CATALYSTS AND THEIR MECHANISM IN BOTH ACID AND ALKALINE MEDIA: THE EFFECT OF THE CATALYST PRECURSOR AND THE IONOMER ON OXYGEN REDUCTION
Non-platinum catalysts are an attractive strategy for lowering the cost of fuel cells, but much more development is needed in order to replace platinum, especially at the cathode where oxygen is reduced. Research groups worldwide have donated material for a study in which precursor structure to …
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Energy storage and conversion applications of conductive metal-organic frameworks
… could benefit from systematic optimization is non-platinum group metal (non-PGM) electrocatalysts for the O₂ reduction reaction (ORR) to water (4e⁻ reduction) and / or hydrogen peroxide (2e⁻ reduction). The electrically conductive metal-organic frameworks (MOFs) M₃(HXTP)₂ (HXTP = …
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NICKEL HYDROXIDE NANORIBBONS FOR EFFICIENT WATER SPLITTING AND DIRECT METHANOL FUEL CELL
… In this work, we report the first stabilized non-stochiometric Ni(OH)2 nanoribbons (NR-Ni(OH)2) with alternating 4- and 6- coordinated Ni edge atoms. In OER applications, the NR-Ni(OH)2 exhibits remarkable OER catalytic activity with an overpotential of 162 mV at 10 mA cm-2, which is one of …
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Ni Stability in Anion Exchange Membrane Fuel Cells
… fuel cell design has high reliance on expensive platinum group metal (PGM) catalysts. An anion exchange membrane fuel cell (AEMFC) is one of many alternatives. The AEMFC provides an alkaline environment that enables the use of many non-platinum group metal (non-PGM) catalysts. This grants AEMFCs …
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Metal–organic framework based non-precious metal electrocatalysts for the oxygen reduction reaction
… However, the high cost associated with the platinum-based catalyst required to drive the sluggish kinetics of the cathodic oxygen reduction reaction (ORR) have rendered these devices impractical on a large scale. To address this, the development of non-platinum group metal (non-PGM) …
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Catalyst Layer Design in Polymer Membrane Fuel Cells
… electrolyte membrane fuel cells is the use of platinum as a catalyst. One way to overcome this obstacle is to replace platinum with non-platinum group metal (non-PGM) catalysts, particularly for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs). The most …
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Biological and biomimetic oxygen electro-reduction by enzymes
… are a viable alternative to the traditional platinum based catalysts for the complete oxidation of complex fuels. Efficient oxidation of multi-carbon compounds, selective catalytic activity eliminating the need for fuel purification, and high performance under mild temperature and pH …