کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10611034 986035 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Monodispersed hard carbon spherules as a catalyst support for the electrooxidation of methanol
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Monodispersed hard carbon spherules as a catalyst support for the electrooxidation of methanol
چکیده انگلیسی
Hard carbon spherules (HCS) were used as support of Pt nanoparticles as electrocatalyst for direct methanol fuel cells (DMFCs). Scanning electron microscopy (SEM) images show that the size of the Pt particles on HCS by reduction of K2PtCl6 with ethylene glycol is 4-5 nm. High-resolution transmission electron microscopy (HRTEM) study reveals that the Pt particles on the HCS surface have faceted crystalline structures. The size and aggregation of the Pt particles depend on the surface properties of the carbon support and the medium of the reduction reaction. Cyclic voltammetry and galvanostatic polarization experiments show that the Pt/HCS catalyst exhibits a higher catalytic activity in the electrooxidation of methanol than either the Pt/MCMB or the commercial Pt/Vulcan XC-72 catalyst does.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 43, Issue 1, 2005, Pages 11-16
نویسندگان
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