| Fe-NC_S,N-CNT as the cathode of Single PEMFC |
| کد مقاله : 1113-17THECSI |
| نویسندگان |
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میترا طیموری خبازی *1، سعید بنازاده اهری2، فاطمه ارشدی3، حسین غریبی4، محمد ژیانی5، محمد محمدی تقی آبادی6 1گروه شیمی - دانشکده علوم پایه - دانشگاه تربیت مدرس - تهران - ایران. 2ایران، تهران، دانشگاه تربیت مدرس، دانشکده علوم، گروه شیمی 3گروه شیمی- دانشکده علوم پایه- دانشگاه تربیت مدرس - تهران- ایران 4ایران، تهران، دانشگاه تربیت مدرس، دانشکده علوم، گروه شیمی. 5گروه شیمی فیزیک، بخش شیمی، دانشکده علوم پایه، دانشگاه تربیت مدرس 6گروه شیمی فیزیک، دانشکده علوم پایه، دانشگاه تربیت مدرس، تهران، ایران |
| چکیده مقاله |
| Owing to the several advantageous, recently PEM Fuel Cells have been considered a good substitution for fossil fuel combustion in various applications such as cars and backup powers. The challenge preventing it from being commercialized is the sluggish oxygen reduction reaction (ORR), which takes place at the cathode side. The common electrocatalyst for this reaction is platinum-based and since platinum is a costly element and also rare to find, scientists are trying to find alternatives for them. Metal-organic frameworks are a type of microporous or mesoporous crystalline composite materials made of metal ions or metal clusters that are connected by organic linkers which after a high temperature heat treatment can act as a proper ORR electrocatalyst. In this work, a nonprecious metal ORR electrocatalyst based on iron nanoparticles encapsulated in porous polypyrole branches (Fe-NC_S,N-CNT) has been synthesized and its performance in a single PEM fuel cell has been investigated. Polypyrole is a kind of N-doped carbon template that due to its intrinsic conductivity is using popularly in instruments such as supercapacitors. The Structure and morphology, and electrocatalytic performance of Fe-NC_S,N-CNT have examined via the FESEM images and fuel cell test station, respectively. The fully polyhedral structure of nanocrystals have been sewed together by the polypyrole branches and provided the micro and mesoporous surface area. According to the IVW curve, the maximum power density of the catalyst was 105.1 mW/cm2, and the current density at 0.6 V was 21.89 mA/cm2. |
| کلیدواژه ها |
| Keywords: Cathode catalyst, Electrocatalyst, Metal-organic frameworks, Oxygen reduction reaction, Proton exchange membrane fuel cell. |
| وضعیت: چکیده برای ارائه به صورت پوستر پذیرفته شده است |