کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5148112 | 1497376 | 2017 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gas-leak-induced pinhole formation at polymer electrolyte membrane fuel cell electrode edges
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Gas-leak-induced pinhole formation at polymer electrolyte membrane fuel cell electrode edges Gas-leak-induced pinhole formation at polymer electrolyte membrane fuel cell electrode edges](/preview/png/5148112.png)
چکیده انگلیسی
The study was prompted by an unexpected cell failure of a real PEMFC stack during its initial conditioning. A little gas leak had been detected in the stack, and the gas leak was suspected to generate pinholes. However, in spite of the large gas leak, pinholes did not appear in the normal cells with a GDL-covered catalyst layer. Additional cells with a GDL-uncovered catalyst layer simulating an uneven electrode edge of the failed stack were then tested under the gas leak conditions. Pinholes were demonstrated to appear at the GDL-uncovered catalyst layer position near the gas leak path during the initial conditioning and the phenomena were reproducible. A gas-leak-induced thermal pinhole formation is suggested in which the leaked gas hits the GDL-uncovered low-heat-dissipation catalyst, a hot spot occurs by catalytic combustion, generating the pinhole.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 1, 5 January 2017, Pages 562-574
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 1, 5 January 2017, Pages 562-574
نویسندگان
Hiroyuki Gunji, Mika Eguchi, Fumiaki Sekine, Yasuyuki Tsutsumi,