Observation of water droplets in microporous layers for polymer electrolyte fuel cells by X-ray computed nano-tomography.
X-ray computed nano-tomography
gas diffusion layer
hydrophobic material
microporous layer
polymer electrolyte fuel cell
water droplet
Journal
Journal of synchrotron radiation
ISSN: 1600-5775
Titre abrégé: J Synchrotron Radiat
Pays: United States
ID NLM: 9888878
Informations de publication
Date de publication:
01 Sep 2022
01 Sep 2022
Historique:
received:
11
03
2022
accepted:
08
08
2022
entrez:
8
9
2022
pubmed:
9
9
2022
medline:
9
9
2022
Statut:
ppublish
Résumé
An X-ray computed nano-tomography (nano-CT) system has been established at the BL33XU beamline of SPring-8. The optical system consists of pseudo-Köhler illumination with a sector condenser zone plate, an apodization Fresnel zone plate as the objective lens, and a Zernike phase plate. The imaging detector is a fiber-coupling type X-ray camera. The performance of the X-ray nano-CT system was confirmed by imaging an X-ray test chart. The system was subsequently applied to the observation of a microporous layer for polymer electrolyte fuel cells and a simulated microporous layer including liquid water. The nano-CT system, which can perform a computed tomography measurement in less than 4 min, allowed visualization of a spherical water droplet produced in the microporous layer. In the present study, the shape of water droplets in a nanoscale porous structure is investigated.
Identifiants
pubmed: 36073885
pii: S1600577522007949
doi: 10.1107/S1600577522007949
pmc: PMC9455219
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1258-1264Informations de copyright
open access.
Références
J Synchrotron Radiat. 2017 May 1;24(Pt 3):586-594
pubmed: 28452749
Anal Chem. 2017 Apr 18;89(8):4377-4381
pubmed: 28350460
Rev Sci Instrum. 2012 Aug;83(8):083112
pubmed: 22938279
J Synchrotron Radiat. 2016 Mar;23(2):590-9
pubmed: 26917148
J Synchrotron Radiat. 2016 Jan;23(1):344-52
pubmed: 26698084
Nat Methods. 2012 Jun 28;9(7):676-82
pubmed: 22743772
J Synchrotron Radiat. 2014 Jan;21(Pt 1):82-8
pubmed: 24365920
J Synchrotron Radiat. 2020 Sep 1;27(Pt 5):1339-1346
pubmed: 32876609
Med Phys. 1995 Apr;22(4):375-9
pubmed: 7609717