کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7712501 | 1497422 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Interface contribution to the electrode performance of proton exchange membrane fuel cells - Impact of the ionomer
ترجمه فارسی عنوان
سهم اینترفیس در عملکرد الکترود سلول های سوختی غشایی تبادل پروتون - تاثیر یونومر
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
The commercialization of proton exchange membrane fuel cells (PEMFCs) is closer to the reality than ever before. Electrode interface development can bring a boost to the last few steps. Here, we explore electrode properties from its interface structure, especially the ionomer phase. Electrodes containing identical catalyst but various ionomer loading (0, 10, 20, 30, 40 and 50Â wt.%) were prepared. An optimal value of electrode performance, stability and platinum dissolution was observed respectively for the electrode containing around 30Â wt.% ionomer. The platinum particle increment monotonically decreased with the increase of the ionomer. The electrode surface studies surprisingly reveal that the ionomer coverage increases linearly with the ionomer loading/content only up to a certain extent (around 30Â wt.% in this case); further increase of the ionomer content triggers ionomer agglomeration, which leaves lower coverage of the catalyst. The electrode structure is directly related to the electrode performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 3, 21 January 2016, Pages 1892-1901
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 3, 21 January 2016, Pages 1892-1901
نویسندگان
Shuang Ma Andersen, Laila Grahl-Madsen,