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Cited 6 time in webofscience Cited 7 time in scopus
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Quantitative visualization of a gas diffusion layer in a polymer electrolyte fuel cell using synchrotron X-ray imaging techniques SCIE SCOPUS

Title
Quantitative visualization of a gas diffusion layer in a polymer electrolyte fuel cell using synchrotron X-ray imaging techniques
Authors
Seung.Gon KimLee, SJ
Date Issued
2013-03
Publisher
WILEY-BLACKWELL
Abstract
A gas diffusion layer (GDL) in a polymer electrolyte fuel cell (PEFC) is quantitatively visualized using synchrotron X-ray micro-computed tomography. For three-dimensional reconstruction, an adaptive threshold method is used. This method is compared with the conventional method, i.e. Otsu's method. Additionally, the spatial and temporal variations of the porosity distribution of the GDL under freeze-and-thaw cycles are investigated experimentally. The freeze-and-thaw cycles are established simply using a CRYO system and light source illumination, respectively. Structural defects are found to largely affect the porosity of the GDL. In addition, a cyclic porosity variation is observed in the GDL under freeze-and-thaw cycles. The heterogeneous porosity is irreversibly decreased with the progress of repetitive cycles.
URI
https://oasis.postech.ac.kr/handle/2014.oak/11044
DOI
10.1107/S0909049513001659
ISSN
0909-0495
Article Type
Article
Citation
JOURNAL OF SYNCHROTRON RADIATION, vol. 20, no. 2, page. 286 - 292, 2013-03
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이상준LEE, SANG JOON
Dept of Mechanical Enginrg
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