کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6469641 | 1423976 | 2017 | 4 صفحه PDF | دانلود رایگان |
- Fe, N, and S functionalized carbon electrocatalyst for ORR.
- Effective suppression of the formation of the unstable species.
- Superior catalytic activity to Pt/C catalyst toward ORR in the fuel cell operating range.
- Better durability and methanol tolerance than Pt/C in alkaline electrolyte.
We demonstrate here a Fe, N, and S functionalized carbon (Fe/N/S-C) derived from an iron incorporated and p-toluenesulfonate doped polypyrrole precursor on a carbon support as an efficient catalyst for oxygen reduction reaction (ORR). Such a strategy could effectively suppress the formation of inferior activity metal species and less active oxidized type sulfur species. The as-synthesized Fe/N/S-C catalyst exhibited a highly catalytic activity for ORR which is comparable to the state-of-the-art commercial Pt/C catalyst at low overpotential range while have a better catalytic activity at the fuel cell operation potential range. In addition, this catalyst showed a higher durability and better tolerance to alcohol fuel than Pt/C catalyst.
Graphic abstract83
Journal: Electrochemistry Communications - Volume 81, August 2017, Pages 34-37