کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1289170 | 973290 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structure of porous electrodes in polymer electrolyte membrane fuel cells: An optical reconstruction technique
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Structure of porous electrodes in polymer electrolyte membrane fuel cells: An optical reconstruction technique Structure of porous electrodes in polymer electrolyte membrane fuel cells: An optical reconstruction technique](/preview/png/1289170.png)
چکیده انگلیسی
Computing flows and phase transport in porous media requires a physically representative geometric model. We present a simple method of digitizing the structure of fibrous porous media commonly used in polymer electrolyte membrane (PEM) fuel cells, the so-called gas diffusion layer (GDL). Employing an inverted microscope and image recognition software we process images of the GDL surface collected manually at different focal lengths with micrometer accuracy. Processing the series of images allows retrieval of local depths of the salient in-focus structural elements in each of the different images. These elements are then recombined into a depth-map representing the three-dimensional structure of the GDL surface. Superimposition of the in-focus portions of the structural elements distributed throughout the stack of images yields digitized data describing the geometry and structural attributes of the 3D surface of the GDL fibrous material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 195, Issue 7, 2 April 2010, Pages 1936-1939
Journal: Journal of Power Sources - Volume 195, Issue 7, 2 April 2010, Pages 1936-1939
نویسندگان
Viatcheslav Berejnov, David Sinton, Ned Djilali,