Comparative Study of Pyrolysis and Hydrothermal Method for Preparation of the N, S-Doped Graphene for the Oxygen Reduction Reaction
محل انتشار: چهارمین کنفرانس هیدروژن و پیل سوختی
سال انتشار: 1396
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 609
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شناسه ملی سند علمی:
H2FC04_027
تاریخ نمایه سازی: 13 شهریور 1396
چکیده مقاله:
In the work presented here, nitrogen and sulfur co doped on porous graphene was synthesized using pyrolysis and hydrothermal technique as metal-free electrocatalysts for oxygen reduction reaction (ORR) under alkaline conditions. All the materials have been characterized by Scanning Electron Microscopy (SEM) and X-ray photo-electron spectroscopy (XPS). Moreover for electrochemical evaluation of samples, Rotating Disk electrode (RDE) and Cyclic Voltammetry techniques (CV) were employed. The results revealed that the catalyst prepared by pyrolysis method shows outstanding catalytic activity for the oxygen reduction reaction (ORR), as well as excellent resistance towards methanol crossover effects, indicating their promising potential as ORR electrocatalysts for alkaline fuel cells.
کلیدواژه ها:
نویسندگان
l samiee
Energy Technology Research Division, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
s.sadegh hassani
Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran / Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
m.r ganjali
Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran
a.m rashidi
Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), Tehran, Iran