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Characterization of gas diffusion layer transport properties by limiting current approach
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SYSNO ASEP 0557107 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Characterization of gas diffusion layer transport properties by limiting current approach Author(s) Yakovlev, Y.V. (CZ)
Rodriguez, M. (CZ)
Lobko, Y.V. (CZ)
Vorokhta, Maryna (USMH-B) ORCID, SAI
Kúš, P. (CZ)
Matolínová, I. (CZ)
Matolín, V. (CZ)Number of authors 7 Article number 139755 Source Title Electrochimica acta. - : Elsevier - ISSN 0013-4686
Roč. 404, FEB 1 (2022)Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords Liming current measurements ; Gas diffusion layer ; Relative gas diffusivities ; Water management ; Fuel cell performance Subject RIV CG - Electrochemistry OECD category Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) Method of publishing Limited access Institutional support USMH-B - RVO:67985891 UT WOS 000779964400011 EID SCOPUS 85121598998 DOI 10.1016/j.electacta.2021.139755 Annotation The high performance of hydrogen fuel cells requires an efficient transport of product/reactants in the porous electrodes. An important role in the transport processes plays a gas diffusion layer (GDL) a key part of the fuel cell electrode. In this work, we studied gas transport properties of commercially available GDLs using a limiting current technique. Average relative diffusivities of oxygen and hydrogen for different commercially available GDLs were measured in operating fuel cell. An elaborate analysis of oxygen and hydrogen transport provided important insights into gas diffusion performance and water saturation of GDL at different current densities. Water transport was found to be governed by the GDL thickness. Structural study of GDL by scanning electron microscopy and mercury intrusion porosimetry techniques was performed. Fuel cell performance of GDLs at different relative humidities was studied and analyzed in the framework of transport and structural properties. Workplace Institute of Rock Structure and Mechanics Contact Iva Švihálková, svihalkova@irsm.cas.cz, Tel.: 266 009 216 Year of Publishing 2023 Electronic address https://www.sciencedirect.com/science/article/pii/S0013468621020387
Number of the records: 1