Letteratura scientifica selezionata sul tema "Pile à combustible à membrane échangeuse des protons"
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Articoli di riviste sul tema "Pile à combustible à membrane échangeuse des protons":
Amrouche, Fethia, Bouziane Mahmah, Maiouf Belhamel e Hocine Benmoussa. "Modélisation d’une pile à combustible PEMFC alimentée directement en hydrogène-oxygène et validation expérimentale". Journal of Renewable Energies 8, n. 2 (31 dicembre 2005): 109–21. http://dx.doi.org/10.54966/jreen.v8i2.856.
Bedet, Jérôme, Pierre Mutzenhardt, Daniel Canet, Gaël Maranzana, Sébastien Leclerc, Olivier Lottin, Christian Moyne e Didier Stemmelen. "Étude du comportement de l'eau dans une pile à combustible à membrane échangeuse d'ions (PEMFC): étude par RMN et IRM". Comptes Rendus Chimie 11, n. 4-5 (aprile 2008): 465–73. http://dx.doi.org/10.1016/j.crci.2007.07.004.
ANTONI, Laurent, Jean-Philippe POIROT-CROUVEZIER, Francis ROY e Xavier GLIPA. "GENEPAC : pile à combustible à membrane échangeuse de protons PEMFC". Chimie verte, agosto 2013. http://dx.doi.org/10.51257/a-v2-in52.
Belatel, Mimi, Fatima Zohra Aissous e Fadila Ferhat. "Contribution à l’étude d’une pile à combustible de type PEMFC utilisée pour la production d’énergie électrique verte". Journal of Renewable Energies 15, n. 1 (23 ottobre 2023). http://dx.doi.org/10.54966/jreen.v15i1.297.
Ben Moussa, Hocine, Djamel Haddad, Kafia Oulmi, Bariza Zitouni, Bouziane Mahmah e Maiouf Belhamel. "Modélisation et simulation numérique des transferts fluidique et thermique dans le canal et couches cathodiques d’une PEMFC". Journal of Renewable Energies 10, n. 1 (12 novembre 2023). http://dx.doi.org/10.54966/jreen.v10i1.807.
Tesi sul tema "Pile à combustible à membrane échangeuse des protons":
Nabil, Yannick. "Supports de Catalyseur Nanostructurés pour Pile à Combustible à Membrane Échangeuse de Protons". Thesis, Montpellier, Ecole nationale supérieure de chimie, 2015. http://www.theses.fr/2015ENCM0029/document.
One pivotal issue to be overcome for the widespread adoption of Proton exchange membrane fuel cells (PEMFC) is the stability overtime. In this context, This PhD project focuses on the elaboration of niobium carbide based electrocatalyst supports for the PEMFC cathode to replace the conventional carbon based supports that notoriously suffer from corrosion in fuel cell operating conditions. The approach is to associate this alternative chemical composition with controlled morphologies in order to design electronically conductive and chemically stable materials with the appropriate porosity. Three different syntheses involving hydrothermal template synthesis or electrospinning have been developed leading to three different morphologies: nanostructured powders with high surface area, self-standing nanofibrous mats, and nanotubes with porous walls. These various supports have been catalysed by deposition of platinum nanoparticles synthesised by a microwave-assisted polyol method, and they have been characterised for their chemical and structural composition, morphology, and electrochemical properties. This work demonstrates that the Pt loaded NbC supports feature a greater electrochemical stability than a commercial Pt/C reference and similar electrocatalytic activities towards the oxygen reduction reaction
Mabrouk, Walid. "Synthèse et caractérisation de nouvelles membranes protoniques : Applications en pile à combustible à membrane échangeuse de protons". Phd thesis, Conservatoire national des arts et metiers - CNAM, 2012. http://tel.archives-ouvertes.fr/tel-00697008.
Cognard, Gwenn. "Electrocatalyseurs à base d’oxydes métalliques poreux pour pile à combustible à membrane échangeuse de protons". Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI007.
Conventional electrocatalysts used in proton exchange membrane fuel cells (PEMFC) are composed of platinum nanoparticles supported on high specific surface area carbon blacks. At the cathode side of the PEMFC, where the oxygen reduction reaction (ORR) occurs, the electrochemical potential can reach high values - especially during startup-shutdown operating conditions - resulting in irreversible degradation of the carbon support. A “material” solution consists of replacing the carbon with supports based on metal oxides. The latter have to be resistant to electrochemical corrosion, be electronic conductor and have a porous and nano-architectural structure (for the transport of reagents and products and the homogeneous distribution of the ionomer and platinum nanoparticles).In this work, we have developed and characterized electrocatalysts composed of platinum (Pt) nanoparticles based on tin dioxide (SnO2) and titanium dioxide (TiO2) with optimized textural (aerogel, nanofibres or loosetubes morphologies) and electron-conduction properties (doped with niobium Nb or antimony Sb). The best electrocatalytic properties are reached for an antimony-doped SnO2 aerogel support, denoted ATO. The Pt/ATO electrocatalyst has especially a higher specific activity for the ORR than a Pt/carbon Vulcan® electrocatalyst, synthesized in the same conditions, suggesting beneficial interactions between the Pt nanoparticles and the metal oxide support (Strong Metal Support Interactions SMSI).Durability tests simulating automotive operating conditions of a PEMFC were carried out in liquid electrolyte at 57 °C on these two electrocatalysts by cycling between 0.60 and 1.00 V vs the reversible hydrogen electrode (RHE) or between 1.00 and 1.50 V vs RHE. The Pt/ATO electrocatalyst has an increased stability compared to the reference Pt/carbon Vulcan® electrocatalyst. However, new degradation mechanisms were highlighted in this study: first, the doping element (Sb) is progressively dissolved during electrochemical ageing, which implies a loss of electronic conductivity. This loss is partly due to incursions at low potential, including during electrochemical characterizations. Moreover, between 5,000 and 10,000 cycles of the accelerated stress tests (between 0.60 and 1.00 V vs RHE or between 1.00 and 1.50 V vs RHE at 57 °C), the support loses its porous structure and forms a poorly conductive amorphous film
Mezzi, Rania. "Contrôle tolérant au vieillissement dans des systèmes pile à combustible PEMFC". Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCD031.
The objective of this work is to realize an aging-tolerant control for a proton exchange membrane fuel cell system (PEMFC). In order to achieve this goal, supervision tools, including the monitoring of critical variables, the state of health evaluation and the prediction of the future state are studied and realized. The information collected are used to adapt the system control strategy. The priority of the monitoring system developed is to ensure the energy supply required by the user, while ensuring minimal degradation of the fuel cell. The work consists on determining optimal temperature values, cathode and anode stoichiometry coefficients, and fuel cell current to provide the power required by the load, while extending the lifetime of the PEMFC. The proposed strategy avoids reversible damage and slows the aging rate of the components, while maintaining the value of the voltage in an optimal and low degrading operating range. This voltage variation range was determined by studying the degradation mechanisms of PEMFC
Dumercy, Laurent. "Contribution à la caractérisation thermique et fluidique d'une pile à combustible à membrane échangeuse de protons (PEMFC)". Besançon, 2004. http://www.theses.fr/2004BESA2004.
The aim of this thesis is the thermal and fluidic model of a proton exchange membrane fuel cell. The management of the internal temperature of the fuel cell affect performance, in one hand directly on the electrochemical reaction, in the other hand by determination of their internal caracteristics (hydratation of the membrane, diffusion resistance in the porous area). The modelisation is made between two axis. At first, the thermal behavior is taken into account in the global form. The fuel cell is studed as a whole with a thermal resistance network et heat sources (heat supply by electrochemical reaction, exchanges with fluids). Dirichlet boundary conditions have been used to force surface temperatures. The meshing of the network is shrink for modelizing the central cell. Specific boundary conditions are applied at this cell for quantify intterference of neighboring cells. The studied cell can be used, in this case, on many situations : adiabatic, in serial or with a external flux. In addition, anode and cathode channel have been studied with a specific model, based on the compting by finites differences of a differential equations system. Taking into account the most important physical and thermophysical quantities (pressions, flow rates, water and heat exchange coefficients), it couple internal quantities off the channel et thermal state of the overall system. The studies of the pahse change of water in the channel, his transfert beetwen the anode and the cathode and his influence on the thermal balance are studed
Zhao, Zuzhen. "Détermination des mécanismes de dégradation d'électrodes modèles de pile à combustible à membrane échangeuse de protons". Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00764891.
Dijoux, Étienne. "Contrôle tolérant aux défauts appliqué aux systèmes pile à combustible à membrane échangeuse de protons (pemfc)". Thesis, La Réunion, 2019. http://www.theses.fr/2019LARE0008/document.
Fuel cells (FC) are powerful systems for electricity production. They have a good efficiency and do not generate greenhouse gases. This technology involves a lot of scientific fields, which leads to the appearance of strongly inter-dependent parameters. It makes the system particularly hard to control and increase the fault’s occurrence frequency. These two issues underline the necessity to maintain the expected system performance, even in faulty condition. It is a so-called “fault tolerant control” (FTC). The present paper aims to describe the state of the art of FTC applied to the proton exchange membrane fuel cell (PEMFC). The FTC approach is composed of two parts. First, a diagnostic part allows the identification and the isolation of a fault. It requires a good a priori knowledge of all the possible faults in the system. Then, a control part, where an optimal control strategy is needed to find the best operating point or to recover the fault
Otmani, Nassim. "Détermination des contraintes mécaniques dans les membranes Nafion® au cours du fonctionnement en pile à combustible". Grenoble INPG, 2009. http://www.theses.fr/2009INPG0117.
The durability of proton exchange membrane fuel cells is still not sufficient to be compatible with large-scale applications. The work of this PhD aims at determining the mechanical streses endured by the Nafion® membranes during the PEMFC operation. The elastoplastic properties of Nafion® have been measured in the PEMFC hygrothermal conditions, thanks to tensile tests. In the same conditions, the swelling has been investigated. A link between structure, water content, swelling and mechanical stresses has also highlighted. These properties have then been incorporated in a model built to describe the PEMFC mechanical behaviour. After an experimental validation, this model has been used to simulate hygrothermal loadings representative of the real-life PEMFC operation. A parametric study has given the possibility to advocate some technical advises in order to minimize the mechanical stresses within the membrane
Karst, Nicolas. "Gestion de l'eau dans les micropiles à combustible". Phd thesis, Grenoble INPG, 2009. http://www.theses.fr/2009INPG0030.
The fuel cell, whose energy efficiency is potentially higher than that of the best Li-ion batteries currently proposed on the market, shows the possibility for considerable autonomies for wandering apparatuses. One of the main objectives to be reached for their marketing is the water management. This work aims at understanding and resolving this issue. We carried out studies on the influences of various environmental parameters (temperature, relative humidity,. . . ) as well structural factors (thickness of the cathodic collector, addition of a diffusion layer at cathode, packaging,. . . ) on water management. We propose solutions allowing management of both drying and flooding of micro fuel cells. One of the characteristics of the micro fuel cell studied here is that it is an air-breathing device using directly oxygen from air as combustive. It comes out from this study that these micro fuel cells are extremely sensitive to environmental conditions. In order to obtain optimal performances on a broad range of temperature and relative humidity, a completely passive water management will be insufficient. Thanks to the various results obtained during this work, a first prototype made up of nine micro fuel cells with an active water management is presented
Bressel, Mathieu. "Modélisation raphique pour le pronostic robuste de pile à combustible à membrane échangeuse de proton". Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10119/document.
The fuel cell (FC) is at present the alternative solution to the fossil fuels the most promising. It is however advisable to improve its reliability. This requires the implementation of algorithms capable of estimating in real time the state of health and forecasting its remaining useful life (prognostics). The methods of prognostics based on a physical model offer precise results once they do not requiring either learning or expertise of the operator. However, the problem for a FC system lies in the coupling of several physical phenomena, the uncertainty of the parameters of the model and the low instrumentation of the FC stack.Thus, we use uncertain models based on the Bond Graph tool well adapted for the FC. Concretely, the parameters uncertainties are integrated in the model of evolution of the powers which is used for the detection of the beginning of the aging and the estimation of the degradation of the FC based on the causal and structural properties of the model. The generated model of degradation is used by an extended Kalman filter which allows the estimation of the state of health , the dynamics of the aging and the quantification of the uncertainty for any operating condition (of temperature, current and pressure). An Inverse First Order Reliability Method is then used for the prediction of the remaining useful life and the inherent uncertainty. The global method was validated on various sets of experimental data. Thanks to this set of tools, a control based on the inversion of an Energetic Macroscopic Representation (EMR) model with time varying parameters, robust to aging is developed based on the state of health estimation
Libri sul tema "Pile à combustible à membrane échangeuse des protons":
Spiegel, Colleen. PEM fuel cell modeling and simulation using Matlab. Boston: Academic Press/Elsevier, 2008.
Spiegel, Colleen. PEM fuel cell modeling and simulation using Matlab. Boston: Academic Press/Elsevier, 2008.
Spiegel, Colleen. PEM fuel cell modeling and simulation using Matlab. Boston: Academic Press/Elsevier, 2008.
Li, Xianguo, Jiujun Zhang, David P. Wilkinson, Jeffrey Fergus e Rob Hui. Proton Exchange Membrane Fuel Cells: Materials Properties and Performance. Taylor & Francis Group, 2009.
Li, Xianguo, Jiujun Zhang, David P. Wilkinson, Jeffrey Fergus e Rob Hui. Proton Exchange Membrane Fuel Cells: Materials Properties and Performance. Taylor & Francis Group, 2009.
Franco, Alejandro A. Polymer Electrolyte Fuel Cells: Science, Applications, and Challenges. Taylor & Francis Group, 2013.
Franco, Alejandro A. Polymer Electrolyte Fuel Cells: Science, Applications, and Challenges. Jenny Stanford Publishing, 2016.
Pasupathi, Sivakumar, Juan Carlos Calderon Gomez, Huaneng Su, Harikishan Reddy e Piotr Bujlo. Recent Advances in High-Temperature PEM Fuel Cells. Elsevier Science & Technology Books, 2016.
Qi, Zhigang. Proton Exchange Membrane Fuel Cells. Taylor & Francis Group, 2013.
Qi, Zhigang. Proton Exchange Membrane Fuel Cells. Taylor & Francis Group, 2017.