Browsing Mechanical Engineering by Author "Zenyuk, Iryna V."
Now showing items 1-4 of 4
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Analysis of representative elementary volume and through-plane regional characteristics of carbon-fiber papers: diffusivity, permeability and electrical/thermal conductivity
Garcia-Salaberri, Pablo A.; Zenyuk, Iryna V.; Shum, Andrew D.; Hwang, Gisuk; Vera, Marcos; Weber, Adam Z.; Gostick, Jeff T. (Elsevier, 2018-12)Understanding the transport processes that occur in carbon-fiber papers (CFPs) used in fuel cells, electrolyzers, and metal-air/redox flow batteries is necessary to help predict cell performance and durability, optimize ... -
Implications of inherent inhomogeneities in thin carbon fiber-based gas diffusion layers: a comparative modeling study
Garcia-Salaberri, Pablo A.; Zenyuk, Iryna V.; Hwang, Gisuk; Vera, Marcos; Weber, Adam Z.; Gostick, Jeff T. (Elsevier, 2019-02-01)Thin porous media are present in multiple electrochemical energy devices, where they provide key transport and structural functions. The prototypical example is gas diffusion layers (GDLs) in polymer-electrolyte fuel cells ... -
On the limitations of volume-averaged descriptions of gas diffusion layers in the modeling of polymer electrolyte fuel cells
Garcia-Salaberri, Pablo A.; Gostick, Jeff T.; Zenyuk, Iryna V.; Hwang, Gisuk; Vera, Marcos; Weber, Adam Z. (Electrochemical Society, Inc., 2017)Understanding of the coupled transport processes that occur in thin gas diffusion layers (GDLs) is necessary to develop improved designs. The traditional technique used to model GDLs is the volume-averaged approximation. ... -
Probing water distribution in compressed fuel-cell gas-diffusion layers using X-ray computed tomography
Zenyuk, Iryna V.; Parkinson, Dilworth Y.; Hwang, Gisuk; Weber, Adam Z. (Elsevier B.V., 2015-04)X-ray computed tomography was used to investigate geometrical land and channel effects on spatial liquid-water distribution in gas-diffusion layers (GDLs) of polymer-electrolyte fuel cells under different levels of ...