کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1287903 | 973238 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface modified Nafion® membrane by ion beam bombardment for fuel cell applications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The interfacial structure between an electrolyte membrane and an electrode catalyst layer plays an important role in determining performance of proton exchange membrane fuel cell (PEMFC) since the electrochemical reactions produce electricity occur on the interfaces that are in contact with hydrogen or oxygen gas, so-called three phase boundaries. To improve performance of the PEMFC by enlarging effective area of the interfaces, surface of Nafion® 115 membrane was roughened by Ar+ ion beam bombardment before being coated with a catalyst ink to form the electrode layer. With increasing ion dose density from 0 to 1 Ã 1017 ions cmâ2, roughness and hydrophobicity of the membrane surface increased, which could be favored for a high-performance PEMFC. In fuel cell tests, the single cell using Nafion® membrane bombarded at an ion dose density of 1016 ions cmâ2 exhibited maximum power density of 0.62 W cmâ2, which was two times higher than that of the single cell employing untreated Nafion® 115 membrane, i.e. 0.30 W cmâ2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 155, Issue 2, 21 April 2006, Pages 286-290
Journal: Journal of Power Sources - Volume 155, Issue 2, 21 April 2006, Pages 286-290
نویسندگان
S.A. Cho, E.A. Cho, I.-H. Oh, H.-J. Kim, H.Y. Ha, S.-A. Hong, J.B. Ju,