کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1292127 | 973383 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A highly active Pt catalyst fabricated on 3D porous carbon
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A highly active Pt/carbon catalyst for polymer electrolyte membrane fuel cells and direct methanol fuel cells was prepared by using porous carbon that was synthesized by a colloidal-crystal templating method. The microstructure of the Pt/porous carbon composites was studied with N2 ad-/desorption isotherms, X-ray diffraction and transmission electron microscopy. In contrast to conventional carbon supports, the porous carbon exhibited an attractive microstructure as a catalyst support, i.e. a large surface area with mono-dispersed three-dimensionally interconnected mesopores (45Â nm). A large mesopore surface area prompted dispersion of Pt particles, which resulted in a large effective surface area of Pt with a high activity for the oxygen reduction reaction. The porous structure facilitated smooth mass transportation to give rise to high limiting currents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 164, Issue 2, 10 February 2007, Pages 538-543
Journal: Journal of Power Sources - Volume 164, Issue 2, 10 February 2007, Pages 538-543
نویسندگان
Hirotoshi Yamada, Taiki Hirai, Isamu Moriguchi, Tetsuichi Kudo,