2018
DOI: 10.1016/j.ijhydene.2018.03.045
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Improved PEM fuel cell performance with hydrophobic catalyst layers

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Cited by 29 publications
(19 citation statements)
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“…Among all the strategies, MEA material and structure design take an important place, because water is produced in the CL and then expelled from the GDL to the flow channels. Recently, hydrophobic CLs at the optimum level are recommended to provide improved water management in the literature [74–76]. Contact angle measurement analysis was performed to measure the hydrophobicity degree of the prepared CLs and the results were shown in Figure 5(a) both as images and as numerical values.…”
Section: Resultsmentioning
confidence: 99%
“…Among all the strategies, MEA material and structure design take an important place, because water is produced in the CL and then expelled from the GDL to the flow channels. Recently, hydrophobic CLs at the optimum level are recommended to provide improved water management in the literature [74–76]. Contact angle measurement analysis was performed to measure the hydrophobicity degree of the prepared CLs and the results were shown in Figure 5(a) both as images and as numerical values.…”
Section: Resultsmentioning
confidence: 99%
“…They further reported that CLs formed with PTFE achieved higher current density by reducing activation losses and lower O 2 diffusion resistances through reduction of localized standing water. [ 391,392 ] This suggests that a hydrophobic component in the CL ensures that some regions of free volume remain during flooding and retain a pathway for gas transport through the CL. However, patterning the distribution of the PTFE in the CL has been reported to not benefit the performance.…”
Section: Catalyst Layer Structurementioning
confidence: 99%
“…The assessment of the influence of the water amount on individual components can only be performed by ex situ measurements, e.g., SEM, neutron imaging, synchrotron radiography, or fluorescence microscopy [10,12]. The use of classic electrochemical impedance spectroscopy (EIS) allows observations of the influence of specific operating parameters, including the RH of reactant gases, but only under stable conditions [24][25][26][27][28][29]. This method is also ideally suited for the ex situ testing of individual components of the fuel cell [30][31][32][33][34][35].…”
Section: Introductionmentioning
confidence: 99%