Coating Distribution Analysis on Gas Diffusion Layers for Polymer Electrolyte Fuel Cells by Neutron and X-ray High-Resolution Tomography.
Journal
ACS omega
ISSN: 2470-1343
Titre abrégé: ACS Omega
Pays: United States
ID NLM: 101691658
Informations de publication
Date de publication:
22 Oct 2019
22 Oct 2019
Historique:
received:
14
06
2019
accepted:
18
09
2019
entrez:
29
10
2019
pubmed:
28
10
2019
medline:
28
10
2019
Statut:
epublish
Résumé
Coating load and distribution in gas diffusion layers (GDLs) for polymer electrolyte fuel cells (PEFCs) have a major influence on mass transport losses. To be able to optimize the coating distribution and get more accurate data about the influence of the coating on the PEFC performance, better characterization techniques are necessary. Common analysis techniques are limited to selected sections of the material, or they are not sensitive to small amounts of coating. We propose a new methodology to get a complete description of the coating distribution and the GDL structure by combining high-resolution X-ray tomography with high-resolution neutron tomography. Using an isotopic gadolinium staining method to enhance the neutron and X-ray absorption contrast, lower quantities of coating can be detected. The combination of both imaging techniques allows for a more detailed analysis of the coating distribution.
Identifiants
pubmed: 31656897
doi: 10.1021/acsomega.9b01763
pmc: PMC6811840
doi:
Types de publication
Journal Article
Langues
eng
Pagination
17236-17243Informations de copyright
Copyright © 2019 American Chemical Society.
Déclaration de conflit d'intérêts
The authors declare no competing financial interest.
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