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Showing 1 to 20 of 185 for “"Proton Exchange Membrane"”.
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Design & development of innovative proton exchange membrane fuel cells
… is concerned with the design and development of Proton Exchange Membrane (PEM) fuel cells and provides a body of information for continued PEM fuel cell development, which will ideally aid in the future commercialisation of these electrochemical devices. Through a combination of numerical …
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High Temperature Polymers for Proton Exchange Membrane Fuel Cells
Novel proton exchange membranes (PEMs) were investigated that show potential for operating at higher temperatures in both direct methanol (DMFC) and H2/air PEM fuel cells. The need for thermally stable polymers immediately suggests the possibility of heterocyclic polymers bearing appropriate ion …
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Electrochemical impedance spectroscopy of proton exchange membrane fuel cell stacks
… (EIS) is applied to a small, four cell Proton Exchange Membrane (PEM) fuel cell stack to examine the stack response as the load current changes. The measured stack response is compared to a simulated response generated by a stack model that has been developed using MATLAB. The results …
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Development of Proton Exchange Membrane for Fuel Cell and Electrolyzer
… and evaluation of advanced polymer electrolyte membranes (PEMs) suitable for proton exchange membrane fuel cells (PEMFCs) and water electrolysis systems. Two novel membrane design strategies were investigated: (i) modification of porous PTFE substrates with dopamine and sulfonated dopamine to …
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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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Low platinum loading electrospun electrodes for proton exchange membrane fuel cells
… supports for sputtered platinum catalyst in proton exchange membrane fuel cells. The performance of the sputtered nanofiber supports was similar to that of sputtered commercial gas diffusion layers in single cell fuel cell tests. However, sputtered platinum electrodes performed significantly …
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Proton Exchange Membrane Electrolysis Applied to the Dehydration of Cow Milk
… role of an electrochemical alternative method of proton exchange membrane (PEM) electrolysis in the process of concentrating milk solids. Although the thermodynamic specific energy of electrolysis at [mathematical notation] is high compared to existing thermal methods around [mathematical …
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A Microstructural Model for a Proton Exchange Membrane Fuel Cell Catalyst Layer
… a microstructural model of a catalyst layer in a proton exchange membrane (PEM) fuel cell. In this study, a stochastic model that uses individual carbon, platinum and ionomer particles as building blocks to construct a catalyst layer geometry, resulting in optimal porosity and material mass ratios …
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INTELLIGENT FAULT DETECTION AND ISOLATION FOR PROTON EXCHANGE MEMBRANE FUEL CELL SYSTEMS
… independent neural network is used to model the proton exchange membrane fuel cell nonlinear systems using a multi-input multi-output structure. This research proposed the use of radial basis function network and multilayer perceptron network to perform fault detection. After training, the neural …
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Study of catalysts with high stability for proton exchange membrane fuel cells
The innovation and investigation of catalysts in proton exchange membrane fuel cells are included in this thesis. In the first part of this work, stability of the catalyst support of PEMFC catalyst is investigated. Nanoscale platinum particles were loaded on two different kinds of carbon supports, …
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Porous Silicon as a Proton Exchange Membrane for Direct Methanol Fuel Cells
… is it used to function as a mechanical filter or membrane. The research deals with investigations into using P-Si as a functioning electrolyte to transfer ions from the anode to cathode of a DMFC. In addition, an effort to observe the consequences of stacking multiple layers of anodes is …
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Polymeric and Polymer/Inorganic Composite Membranes for Proton Exchange Membrane Fuel Cells
Several types of novel proton exchange membranes which could be used for both direct methanol fuel cells (DMFCs) and hydrogen/air fuel cells were investigated in this work. One of the main challenges for DMFC membranes is high methanol crossover. Nafion, the current perfluorosulfonic acid copolymer …
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Experimental investigation of novel proton exchange membrane fuel cell and battery integrated system
In this thesis study, a PEM fuel cell and battery integrated system is developed. The performance assessments of the PEM fuel cell stack are performed through the polarization curve, energy efficiency, exergy efficiency, and open circuit voltage. Furthermore, the performance evaluation of the fuel …
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Bio-engineered gas diffusion electrodes (GDEs) for proton exchange membrane fuel cells (PEMFCs)
… a barrier to the successful commercialisation of Proton Exchange Membrane Fuel Cells (PEMFCs). Successful mass production of fuel cell components combined with the recovery of PGMs from waste, more efficient PGM use or the replacement of PGMs catalyst is necessary to reduce costs per unit. Current …
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Synthesis and Characterization of Multiblock Copolymers for Proton Exchange Membrane Fuel Cells (PEMFC)
… multiblock copolymers are promising proton exchange membrane (PEM) materials due to their ability to form various morphological structures which enhance transport. Four arylene chlorides monomers (2,5-Dichlorobenzophenone and its derivatives) were first successfully synthesized from …
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