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Showing 1 to 12 of 12 for “"Electrochemical surface area"”.
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Conductive Si doped metal oxide fuel cell catalyst supports: understanding the role of Si content
… The TOS support was optimized for 20 wt% Si and surface area. The support was studied under intensive electrochemical durability tests and exhibited impressive durability and stability, narrow band gap and high electronic conductivity. The TOS support was platinized (Pt/TOS) and possessed high …
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Optimising Recording & Stimulation Performance of Neuronal Microelectrode Arrays through Macroporous Conducting Polymer Modification
… and platinum, due to the subsequent reduction in electrochemical surface area. Strategies utilised to increase electrochemical surface area whilst maintaining the desired geometric area involve modification with rough, conductive electrode coatings, such as conducting polymers (CPs). This research …
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Low PGM PtCo alloy catalysts for low loading Polymer Electrolyte Membrane Fuel Cells
… in especially transportation applications. The electrochemical conversion of energy is driven within membrane electrode assemblies (MEAs) over costly Pt catalyst which limits PEMFC cost viability. PtCo alloy catalysts are attractive alternatives to Pt, with similar or higher catalytic activity …
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Enhanced performance and durability of shape-controlled octahedral PtNiX catalysts for advanced fuel cell applications
… well as rhodium and iridium doping to increase electrochemical surface area (ECSA), ORR activity, and stability; and ii) systematic evaluation of the key factors that influence the translation of high catalytic activity from liquid half-cell measurements to membrane electrode assembly (MEA) …
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Development of Tin Oxide As An Oxidation-Resistant Support For Pem Fuel Cells
… of the catalyst support, stability of the electrochemical surface area against platinum dissolution, agglomeration, and poisoning, and a negligible peroxide/water production ratio.</p> <p>In this study, a novel mesoporous SnO2 support was successfully prepared to take the place of …
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Health conscious energy management strategies for fuel cell/battery hybrid vehicles
… performance decay is based on the decrease of electrochemical surface area (ECSA) which is mainly caused by catalyst (Platinum) dissolution. Different degradation factors affecting ECSA reduction were considered and included as additional costs in the power management strategies besides fuel …
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Study of catalysts with high stability for proton exchange membrane fuel cells
… and Teller (BET) method was applied to test the surface area of the catalysts. The electrochemical surface area (ECSA) and mass activity during oxygen reduction reaction (ORR) process for two kinds of catalyst were tested by cyclic voltammetry method under different conditions. The stability of …
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Improving selectivity in electrochemical CO₂-to-fuels catalysis : the role of catalyst mesostructure, surface structure, and electrolyte
… systematic comparisons of catalyst activity: the electrochemical surface area. Using double layer capacitance measurements in aprotic electrolytes and atomic force microscopy to independently determine surface areas, it is possible to obtain a general value of specific capacitance (~11 [mu]F/real …
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Synthesis, characterization and catalytic investigations of Pt-based binary (bimetallic) and ternary (trimetallic) nanoparticles
… nanoparticles exhibited different morphologies, surface facets, size and structure (alloy or core-shell). To measure the oxygen reduction reaction (ORR) functionality of these nanoparticles, electrochemical measurements were conducted, including cyclic voltammetry (CV), carbon monoxide stripping …
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Ti3C2Tx as an Advanced Support Material for Polymer Electrolyte Fuel Cell Catalysts to Facilitate the Oxygen Reduction Reaction
… The synthesis of high (>50 m2 g -1 ), specific surface area, delaminated Ti3C2Tx flakes was attempted first with mild in-situ HF conditions. While this method could both etch and delaminate flakes in a single stage, because the flake size remained large and unchanged, the specific surface area …
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Facile Synthesis of High Surface Area Molybdenum Carbide and Nitride: An Application in Support Materials for Oxygen Reduction Reaction
A method to synthesize high surface area α-MoC(1-x) without the temperature programmed reduction (TPR) of MoO3 is described. This method was then used, in conjunction with a novel in situ method to obtain highly dispersed PtMoz supported on α- MoC(1-x), to explore the suitability of such materials …
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Evaluation of process parameters and membranes for SO2 electrolysis
… in an increase in manufacturing costs. Using electrochemical impedance spectroscopy at the optimised operating conditions, the MEA manufacturing process was optimised with respect to hot press pressure and time, while the effect of selected operating conditions was used to evaluate the charge …