2019
DOI: 10.1149/2.0111907jes
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Perspective—Mesoscale Physics in the Catalyst Layer of Proton Exchange Membrane Fuel Cells

Abstract: Proton-exchange membranes fuel-cells (PEMFC) electrochemical performance insights are predicated on a detailed understanding of species transport in the cathode catalyst layer (CCL). Traditionally, CCL microstructure considerations were approached through approximations with unresolved pore-scale features. Such simplifications cause the loss of predictability for improving the economic feasibility via lower Pt-loading or non-noble metal catalysts. With advances in visualization, microstructure resolved mesosca… Show more

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Cited by 13 publications
(6 citation statements)
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“…Since recent improvements in visualization techniques and Lattice Boltzmann Methods offer new opportunities to directly simulate the dynamics of water movement in the CCL using the actual geometry of the catalyst layer, understanding how these dynamics change with degradation requires the use of Young's contact angle rather than the apparent contact angle. 30 Thus, it is necessary to use a model to relate the two contact angles.…”
mentioning
confidence: 99%
“…Since recent improvements in visualization techniques and Lattice Boltzmann Methods offer new opportunities to directly simulate the dynamics of water movement in the CCL using the actual geometry of the catalyst layer, understanding how these dynamics change with degradation requires the use of Young's contact angle rather than the apparent contact angle. 30 Thus, it is necessary to use a model to relate the two contact angles.…”
mentioning
confidence: 99%
“…Such studies delineated above not only highlight the interactions between the constituent phases but can also give fundamental insights into various intertwined aspects of catalyst ink preparation like mixing time, mixing sequence, dispersion solvents 26 that are responsible for a prudent design of the CCL microstructure. 27,28 With a view of catalyst layer optimization, several studies have been devoted to investigating the effect of ionomer content. [29][30][31][32] Of late, the distribution of the ionomer phase 33,34 has been a critical design parameter to better PEFC electrode performance.…”
Section: List Of Symbolsmentioning
confidence: 99%
“…Experimental studies have been focused on in situ measuring of film transport resistivity using limiting current method [13][14][15][16][17]. The references above indicate just several exemplary works; more papers could be found in reviews [18][19][20].…”
Section: Introductionmentioning
confidence: 99%