[PDF] Top 20 Pore network modelling of condensation in gas diffusion layers of proton exchange membrane fuel cell
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Pore network modelling of condensation in gas diffusion layers of proton exchange membrane fuel cell
... words: Pore network modeling, condensation, evaporation, temperature gradient ...vapour condensation driven by a temperature gradient in a porous medium is encountered in ... Voir le document complet
154
Performance loss of proton exchange membrane fuel cell due to hydrophobicity loss in gas diffusion layer: Analysis by multiscale approach combining pore network and performance modelling
... lack of quantitative knowledge for loss of wettability of GDL; calculations have been performed for stationary condi- tions and experiments are generally done under cycling conditions (so here we ... Voir le document complet
15
Pore network modelling of condensation in gas diffusion layers of proton exchange membrane fuel cells
... distribution in the GDL obtained for the reference ...representative of other conditions in current density and channel relative ...region of the GDL below the channels is dry whereas the ... Voir le document complet
12
Modelling and numerical simulation of water transfer in Proton Exchange Membrane Fuel Cells
... direction in the hydrophobic GDLs. In theory, liquid water prefers invading large pores in fully hydrophobic porous ...perforated in a purely hydrophobic GDL would be preferential pathways for ... Voir le document complet
183
Impact of non-uniform wettability in the condensation and condensationliquid water intrusion regimes in the cathode gas diffusion layer of proton exchange membrane fuel cell
... improvement of Proton exchange membrane (PEM) fuel cells [ 1 ...]. In this context, the gas diffusion layer (GDL) is a key com- ponent as regards the gas access to ... Voir le document complet
11
Simulations of one and two-phase flows in porous microstructures, from tomographic images of gas diffusion layers of proton exchange membrane fuel cells
... on pore network extracted from images were tested on a series of microstructures to ensure their ...range of microstruc- tures, ranging from simple geometries to real GDL ...relevance ... Voir le document complet
232
Measurement of effective gas diffusion coefficients of catalyst layers of PEM fuel cells with a Loschmidt diffusion cell
... (CCL) in a proton exchange membrane (PEM) fuel cell is a porous thin coating with the porosity of 30–60% and pore size distribution from several nanometers to 100 ... Voir le document complet
7
Liquid water in cathode gas diffusion layers of PEM fuel cells:Identification of various pore filling regimes from pore network simulations
... A pore network model (PNM) aiming at simulating the liquid water pore filling in the cathode gas diffu- sion layer (GDL) in an operating PEM–fuel cell is ...range ... Voir le document complet
15
Validation of pore network simulations of ex-situ water distributions in a gas diffusion layer of proton exchange membrane fuel cells with X-ray tomographic images
... flows in GDL, one can distinguish in situ two-phase flows from ex-situ two phase ...flows. In situ refers to GDL in an operating fuel cell whereas ex situ refers to GDL typically ... Voir le document complet
15
Characterization of pore network structure in catalyst layers of polymer electrolyte fuel cells
... microstructure in terms of ionomer and Pt content, pore size dis- tribution, and pore network ...The Pore Network Modeling (PNM) approach is widely used to study the ... Voir le document complet
6
Validation of pore network simulations of ex-situ water distributions in a gas diffusion layer of proton exchange membrane fuel cells with X-ray tomographic images
... flows in GDL, one can distinguish in situ two-phase flows from ex-situ two phase ...flows. In situ refers to GDL in an operating fuel cell whereas ex situ refers to GDL typically ... Voir le document complet
14
Impact of non-uniform wettability in the condensation and condensationliquid water intrusion regimes in the cathode gas diffusion layer of proton exchange membrane fuel cell
... fractions of hydrophilic pores greater than a critical value corre- sponding to the percolation threshold of the ...impact of the hydrophobicity loss on the PEMFC per- formance was then studied ... Voir le document complet
10
Pore network model of the cathode catalyst layer of proton exchange membrane fuel cells: Analysis of water management and electrical performance
... A pore network modeling approach is developed to study multiphase transport phenomena inside a porous structure representative of the Cathode Catalyst Layer (CCL) of Proton ... Voir le document complet
12
A general model for air-side proton exchange membrane fuel cell contamination
... regardless of toluene ...V. In addition, with the presence of contaminant we see a narrowing of the potential window in which free Pt sites ...range in which free Pt sites ... Voir le document complet
13
Effect of open circuit voltage on degradation of a short proton exchange membrane fuel cell stack with bilayer membrane configurations
... images in contact mode of Cell 3 at the anode side, showing conductivity distribution on the membrane surface for ...occurrence in pixels of current values for the whole image. ... Voir le document complet
12
Proton exchange membrane fuel cell remaining useful life prognostics considering degradation recovery phenomena
... because of its limited ...combination of several processes to monitor, analyze and master the systems’ State of Health ...helpful in making decisions such as maintenance scheduling and control ... Voir le document complet
19
Development of new catalysts for proton exchange membrane fuel cells (PEMFCs)
... activity of the latter by strain-ligand effect, ...widening of the d -band and a decrease of the average energy of the band (the d -band center) ...modification of the Pt 5d -band ... Voir le document complet
221
Experimental observations of microstructure changes in the catalyst layers of proton exchange membrane fuel cells under wet-dry cycles
... immersed in a bottle partially filled with DI water as shown in ...kPa) in the bottle so that all the pores are wetted by water as the gas in the pores is evacuated from the samples as ... Voir le document complet
10
Contribution of nanoclays to the barrier properties of a model proton exchange membrane for fuel cell application
... Keywords: Fuel cell; Membrane; Montmorillonite; Poly(vinyl alcohol) ...being, fuel cells have the potential at least to complement and possibly to substitute batteries in portable ... Voir le document complet
9
Effects of open-circuit operation on membrane and catalyst layer degradation in proton exchange membrane fuel cells
... 3.1.2. Cell performance degradation ...block of OC operation from 0 h to 206 h of ...trend in cell performance until after 175 ...h of degradation shows a distinct and unusual ... Voir le document complet
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