2019
DOI: 10.1149/09208.0135ecst
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Impact of Porosity Gradients within Catalyst Layer and MPL of a PEM Fuel Cell on the Water Management and Performance: A Neutron Radiography Investigation

Abstract: The influence of porosity modification of both the cathode microporous layer (MPL) and catalyst layer (CL) of a low temperature polymer electrolyte membrane fuel cell (PEMFC) is studied with a neutron radiography technique to determine the water distribution and transport inside the cell. Three types of cathode MPLs with varying porosity distributions are made by introducing Chemisnow® monodisperse spherical polymer particles with 1.5 μm and 30 μm diameters inside the MPL slurry. CLs with three different poros… Show more

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Cited by 8 publications
(10 citation statements)
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“…A range of other templating methods have been utilized, such as the use of polystyrene nanospheres ( Figure 48 ). [ 342,384,492 ] These are easier to remove by simple washing in ethyl acetate and hence are more widely used. For example, Zlotorowicz et al.…”
Section: Catalyst Layer Preparation Methodsmentioning
confidence: 99%
See 3 more Smart Citations
“…A range of other templating methods have been utilized, such as the use of polystyrene nanospheres ( Figure 48 ). [ 342,384,492 ] These are easier to remove by simple washing in ethyl acetate and hence are more widely used. For example, Zlotorowicz et al.…”
Section: Catalyst Layer Preparation Methodsmentioning
confidence: 99%
“…They also play an important role in water management, both removing excess water from the ORR reaction and maintaining hydrated membranes and ionomers. [ 342,343 ] Traditionally support particles are spherical and agglomerate into clusters (aggregates) separated by empty space or ionomer. The pores are the void space within each particle, between each particle in the cluster and the void space between each cluster, as shown in Figure 24 .…”
Section: Catalyst Layer Structurementioning
confidence: 99%
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“…Kartouzian et al 25 with using the neutron radiography technique investigated the effect of porosity gradient in the CL and the porous micro-layer on distribution and transfer of water in five fuel cells. Shen et al, 10 using a theoretical model, estimated the amount of liquid water in the fuel cells.…”
Section: Introductionmentioning
confidence: 99%