مشخصات پژوهش

عنوان	Electrocatalytic activity of porous nanostructured Fe/Pt-Fe electrode for methanol
نوع پژوهش	مقاله چاپ‌شده
کلیدواژه‌ها	Methanol electro-oxidation Nanostructured Fe/Pt-Fe Electrocatalytic behavior Galvanic replacement Cyclic voltammetry Direct methanol fuel cell
چکیده	An electrochemical approach to fabricate a nanostructured Fe/Pt-Fe catalyst through electrodepo- sition followed by galvanic replacement is presented. An Fe/Pt-Fe nanostructured electrode was prepared by deposition of Fe-Zn onto a Fe electrode surface, followed by replacement of the Zn by Pt at open-circuit potential in a Pt-containing alkaline solution. Scanning electron microscopy and energy-dispersive X-ray techniques reveal that the Fe/Pt-Fe electrode is porous and contains Pt. The electrocatalytic activity of the Fe/Pt-Fe electrode for oxidation of methanol was examined by cyclic voltammetry and chronoamperometry. The electrooxidation current on the Fe/Pt-Fe catalyst is much higher than that on flat Pt and smooth Fe catalysts. The onset potential and peak potential on the Fe/Pt-Fe catalyst are more negative than those on flat Pt and smooth Fe electrodes for methanol electrooxidation. All results show that this nanostructured Fe/Pt-Fe electrode is very attractive for integrated fuel cell applications in alkaline media.
پژوهشگران	دکتر مهدی عبدالملکی (نفر دوم)، محمد حسین کشاورز (نفر چهارم)، حمید رضا پوراعتدال (نفر سوم)، جواد حسینی (نفر اول)