Enhancing the CO tolerance of Pt/C as PEM fuel cell anode catalyst by modifying the catalyst synthesis method
- سال انتشار: 1398
- محل انتشار: فصلنامه هیدروژن و پیل سوختی ایران، دوره: 6، شماره: 1
- کد COI اختصاصی: JR_IJHFC-6-1_006
- زبان مقاله: انگلیسی
- تعداد مشاهده: 410
نویسندگان
Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST),Tehran, IRAN
Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), Tehran, IRAN
Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), Tehran, IRAN
چکیده
The most important challenge in Proton Exchange Membrane (PEM) fuel cells is poisoning of the anode catalyst in the presence of impurities, especially carbon monoxide (CO) in the hydrogen feed. So, synthesis of catalysts with high CO tolerance is important for the commercialization of PEM fuel cells. In this study, a common borohydride reduction method was modified to synthesize a carbon supported Platinum Nanocatalyst (Pt/C) with a higher stability in the presences of CO impurity compared to a commercial Pt/C catalyst. The catalysts were characterized by X-ray diffraction and Scanning Electron Microscopy (SEM). The electrochemical cyclic voltammetry (CV) test procedure was used to evaluate the catalyst’s resistance to long-term CO exposure. The results showed that the synthesized catalyst’s electrochemical activity for CO electro-oxidation was comparable to commercial Pt/C under the same conditions. Moreover, the endurance of our catalyst for CO electro-oxidation after 100 CV with continuous CO gas bubbling is remarkable compared to the commercial catalyst performance, which dropped about 88 percent from its initial amounts.کلیدواژه ها
fuel cell, Cyclic voltammetry, supported nano Platinum, CO electro-oxidationاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.