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Showing 1 to 19 of 19 for “"Proton Exchange Membrane Fuel Cell (PEMFC)"”.
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Conductive Si doped metal oxide fuel cell catalyst supports: understanding the role of Si content
Current proton exchange membrane fuel cell (PEMFC) catalysts commonly use platinum supported on carbon (Pt/C) which is susceptible to corrosion, thus a highly conductive and stable Ti3O5 doped by Si (TOS) conductive metal oxide catalyst support is reported. The TOS support was optimized for 20 wt% …
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An investigation into the minimum dimensionality required for accurate simulation of proton exchange membrane fuel cells by the comparison between 1- and 3-dimension models.
… a reduced carbon footprint in the environment. Fuel cell (FC) technology has been studied in detail to implement hydrogen as well as other renewable sources as a feasible fuel. Further development in fuel cell design is hampered by the lack of fundamental models which reveal the physical and …
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Evaluation of the Effect of Microporous Sublayer Design and Fabrication on Performance and Adhesion in PEM Fuel Cell Assemblies
The typical architecture of the proton exchange membrane fuel cell (PEMFC) contains a layer called the microporous sublayer (MSL). The MSL is a mixture of carbon black and polytetrafluoroethylene (PTFE), which is typically applied to the gas diffusion layer (GDL). The composition (wt.% PTFE) and …
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Application of a Decomposition Strategy to the Optimal Synthesis/Design and Operation of a Fuel Cell Based Total Energy System
… optimization of a stationary cogeneration proton exchange membrane fuel cell (PEMFC) based total energy system (TES) for residential/commercial applications is the focus of this work. A number of different configurations for the fuel cell based TES were considered. The most promising set …
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Electrochemical impedance spectroscopy options for proton exchange membrane fuel cell diagnostics
… (EIS) has been exploited as a rich source of Proton Exchange Membrane Fuel Cell (PEMFC) diagnostic information for many years. Several investigators have characterized different failure modes for PEMFCs using EIS and it now remains to determine how this information is to be obtained and used …
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Evaluation of the Effects of Microporous Layer Characteristics and Assembly Parameters on the Performance and Durability of a Planar PEM Fuel Cell
In recent years a significant portion of proton exchange membrane fuel cell (PEMFC) work has been focused on understanding and optimizing the functions of the microporous layer (MPL). Researchers have found that including this layer, composed of carbon black and TeflonTM (PTFE), between the gas …
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Control and Operation of a Microgrid Involving a PEM Fuel Cell Through Analysis and Experimentation
… a microgrid consisting of an inverter interfaced proton exchange membrane fuel cell (PEMFC) power module and two synchronous generators operating in an islanded mode. The work includes the experimental investigation of the dynamic characteristics of the distributed generators in this prototype …
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CdSe based nanowires for the photocatalytic production of hydrogen gas
… clean energy conversion technologies such as the proton exchange membrane fuel cell (PEMFC). This study uses a template-directed electrodeposition technique to synthesize multi-segmented CdSe based nanowires for use as a photocatalyst device for hydrogen production. CdSe, Ni, Au and Pt nanowires …
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Rapid screening of PEM FC cathode catalysts
… major bottlenecks in catalyst development for proton exchange membrane fuel cell (PEMFC) is the lack of fast high-throughput testing methods. Fast screening techniques enable a large number of catalysts to be tested in a relatively short time under the same conditions.<br/><br/>This project was …
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Experimental and numerical analysis of fuel cells
Fuel Cells are attractive power source for use in electronic applications. Physical phenomena (water generation, saturation effect in fuel cell, poisoning, and thermal stress) are studied that governs the operation of a Proton Exchange Membrane Fuel Cell (PEMFC) and Solid Oxide Fuel cell (SOFC). …
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Development of bimetallic Pd-Zn catalysts for methanol steam reforming: hydrogen production for fuel cells
Proton exchange membrane fuel cell (PEMFC) has been reported as clean and efficient energy technology from conversion of H₂. However, one of the main challenges remains the storage and transport of hydrogen. The promising alternative is to produce H₂ on site by a reformer using a H₂-dense liquid as …
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Single stage boost inverter for standalone fuel cell applications
The proton exchange membrane fuel cell (PEMFC) is a promising technology that can be manufactured in South Africa because of the platinum catalyst required. South Africa is rich in platinum and, therefore, the PEMFC system can be cost-effectively produced. In residential stationary applications of …
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Supported metal catalysts for water-gas shift conversion
… its impact on global climate change. The use of fuel cells as a form of energy generation is extremely promising as it converts chemical potential energy directly to electrical energy, bypassing the Carnot cycle limitations. Various types of fuel cells have been developed, with the proton …
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Development and validation of a computational model for a proton exchange membrane fuel cell
A steady-state computational model for a proton exchange membrane fuel cell (PEMFC) is presented. The model accounts for species transport, electrochemical kinetics, energy transport, current distribution, water uptake and release within the polymer portion of the catalyst layers, and liquid water …
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Development of Adaptive and Factorized Neural Models for MPC of Industrial Systems
… factorized RBF model is applied to a non-linear proton exchange membrane fuel cell (PEMFC) stack system. The main contents include three parts: RBF model adaptation; model factorization and fast long-range prediction; and MPC for the PEMFC stack system. The adaptive RBF model employs the …
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Facile Synthesis of High Surface Area Molybdenum Carbide and Nitride: An Application in Support Materials for Oxygen Reduction Reaction
… for oxygen reduction reaction (ORR) in a proton exchange membrane fuel cell (PEMFC). Mg2(Mo3O8) and Zn2(Mo3O8), alternative tetravalent Mo intermediates to MoO2, were obtained through the thermal decomposition of Mg(MoO4) and Zn(MoO4) in mixtures of CO and H2. A novel sacrificial support …
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Electrocatalytic activities of supported Pt nanoparticles for low-temperature fuel cell applications
Low-temperature fuel cells (FCs) are highly efficient and environmentally friendly energy conversion devices that have been in the spotlight of many energy research efforts in the past few decades. However, FC commercialization is limited by several difficulties, one including the 60 % cell voltage …
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Catalyst Layer Design in Polymer Membrane Fuel Cells
… obstacles to commercializing polymer 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 …
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Health and conditions monitoring for PEMFC automotive systems: towards on-board, online and near real-time EIS based diagnostics
L'abstract è presente nell'allegato / the abstract is in the attachment