| The investigation of Fe-NC_S,CNT durability as an oxygen reduction reaction electrocatalyst |
| کد مقاله : 1016-CNF |
| نویسندگان |
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میترا طیموری خبازی *1، فاطمه ارشدی1، حسین غریبی2، محمد محمدی3، محمد ژیانی4 1گروه شیمی، دانشکده علوم‌پایه، دانشگاه تربیت مدرس 2شیمی فیزیک،دانشگاه تربیت مدرس 3انجمن 4شیمی فیزیک- علوم پایه- تربیت مدرس- تهران- ایران |
| چکیده مقاله |
| The challenges of fossil fuels and environmental considerations have led humans to use renewable energy. Fuel cells are one of the renewable energy sources. A fuel cell is an energy converter that converts chemical energy directly into DC electricity. By virtue of their high efficiency and environmentally friendliness, fuel cells are regarded as one of the most promising energy conversion devices with potential applications in automobile, stationary and portable power sources. On the cathode side of the fuel cell, the oxygen reduction reaction (ORR) takes place. This reaction is very slow and the catalysts which used to accelerate this reaction are platinum-based. However, due to the scarcity of this element, the use of such catalysts is not cost-effective. Recently, MOFs have been considered due to the production of carbon-based non-precious metal electrocatalysts. The porous crystal structure of MOF has unique and structurable chemical properties. Synthesizing a non-precious metal electrocatalyst for the oxygen reduction reaction with high activity and durability, which can replace the Pt/C on the cathode side of the PEM fuel cell is still a challenge. In this work, durability of a Fe-N-C electrocatalyst supperted on Polypyrrol (PPY) — PPY is a conductive polymer which can boost the conductivity of the MOF based electrocatalyst — has been investigated and compared to the commercial Pt/C in O2 saturated 0.5 M H2SO4. The reults show that this cathode catalyst in a long term operation after 5000 cycles, almost has the same electrochemical surface area. The onset potential of the synthesized catalyst hasn’t changed (Eonset= 0.61 VAg/AgCl) and the half wave potential shifted only 40 mVAg/AgCl. |
| کلیدواژه ها |
| MOF based electrocatalysts, Oxygen reduction reaction, Durability test, PEM fuel cell, RDE |
| وضعیت: چکیده برای ارائه به صورت پوستر پذیرفته شده است |