کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1293025 1498025 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of microporous layer on MacMullin number of carbon paper gas diffusion layer
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Effect of microporous layer on MacMullin number of carbon paper gas diffusion layer
چکیده انگلیسی

The effect of the microporous layer (MPL) and wet proofing on the MacMullin number has been evaluated for a custom series of Toray TGP-H-060 carbon paper gas diffusion layer (GDL). Complementary characterizations for these GDLs were performed by using scanning electron microscopy (SEM) images, pore size distribution (PSD) and fuel cell performance. The GDLs were customized by the addition of a microporous layer (MPL) and the treatment of, either or both, the substrate and MPL with 10% and 40% hydrophobic agent. SEM images correlated very well with the data shown for PSD. Distinction between the substrate layer and the MPL were clearly shown as two different slopes in the integral distribution and two different peaks in the differential distribution. The MacMullin number increased with increase in wet proofing but decreased with the addition of the MPL. The MacMullin number is a key parameter that contains the missing information for the path length in GDLs, which is generally approximated with the Bruggeman expression. The results provided an overview for the interpretation of the combined effect of the substrate and MPL properties as well as the cell operating conditions.


► A custom series of Toray TGP-H-060 carbon paper gas diffusion layer (GDL) was characterized.
► The addition of the microporous layer (MPL) affect the cell performance negatively or positively.
► The MacMullin number increased with increase in wet proofing but decreased with the addition of the MPL.
► The MacMullin number is a key parameter that contains the missing information for the path length in GDLs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 207, 1 June 2012, Pages 91–100
نویسندگان
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