Anisotropic properties of gas transport in non-woven gas diffusion layers of polymer electrolyte fuel cells

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43920459" target="_blank" >RIV/60461373:22310/20:43920459 - isvavai.cz</a>

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S0378775320301312?token=7A34D50F2701498657038CA363EFF25AEEECF3A60B4F346429DE5AB0B30EE9BD211E5DB4561FA4AA92A039E28B91B904" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S0378775320301312?token=7A34D50F2701498657038CA363EFF25AEEECF3A60B4F346429DE5AB0B30EE9BD211E5DB4561FA4AA92A039E28B91B904</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jpowsour.2020.227828" target="_blank" >10.1016/j.jpowsour.2020.227828</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Anisotropic properties of gas transport in non-woven gas diffusion layers of polymer electrolyte fuel cells

Popis výsledku v původním jazyce

For this study, gas transport in the gas diffusion layers of polymer electrolyte fuel cells was analyzed in one through-plane and two in-plane directions. Gas transport was calculated using Lattice Boltzmann simulations, with non-woven gas diffusion layers measured both through-plane and in-plane. The micro structure for the transport simulations was based on a stochastic model that can take into account uncompressed and compressed materials. The micro structure of this kind of gas diffusion layers is superposed by fiber bundles. Their impact on the anisotropy of the in-plane permeabilities was then investigated. Finally, the influence of structural inhomogeneities on in-plane flow was analyzed. Compression has a high influence on through-plane and in-plane permeability. The impact of the fibers bundles is smaller than the impact of local variations of the micro structure according to the stochastic geometry model. © 2020 Elsevier B.V.

Název v anglickém jazyce

Anisotropic properties of gas transport in non-woven gas diffusion layers of polymer electrolyte fuel cells

Popis výsledku anglicky

For this study, gas transport in the gas diffusion layers of polymer electrolyte fuel cells was analyzed in one through-plane and two in-plane directions. Gas transport was calculated using Lattice Boltzmann simulations, with non-woven gas diffusion layers measured both through-plane and in-plane. The micro structure for the transport simulations was based on a stochastic model that can take into account uncompressed and compressed materials. The micro structure of this kind of gas diffusion layers is superposed by fiber bundles. Their impact on the anisotropy of the in-plane permeabilities was then investigated. Finally, the influence of structural inhomogeneities on in-plane flow was analyzed. Compression has a high influence on through-plane and in-plane permeability. The impact of the fibers bundles is smaller than the impact of local variations of the micro structure according to the stochastic geometry model. © 2020 Elsevier B.V.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Power Sources

ISSN

0378-7753

e-ISSN

—

Svazek periodika

452

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

—

Kód UT WoS článku

000521510900013

EID výsledku v databázi Scopus

2-s2.0-85078978810