Chemical Vapor Deposition for N/S-Doped Single Fe Site Catalysts for the Oxygen Reduction in Direct Methanol Fuel Cells
Release Time:2025-04-30
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- Date:
- 2025-04-30
- Title of Paper:
- Chemical Vapor Deposition for N/S-Doped Single Fe Site Catalysts for the Oxygen Reduction in Direct Methanol Fuel Cells
- Journal:
- ACS Catalysis
- Summary:
- Single metal site catalysts are the most promising candidates to replace platinum-group-metal (PGM) catalysts for the oxygen reduction reaction (ORR), yet insufficient performance and scalable preparation approaches remain great challenges. Here, we report a nitrogen (N)/sulfur (S) codoped single Fe site catalyst (Fe−N/S−C) through a chemical vapor deposition (CVD) strategy. Using the cyclopentadiene-shielded Fe atom ferrocene (Fc) as the precursor, atomically dispersed single Fe sites were successfully embedded into the N, S codoped 2D carbon nanosheets. The superior catalytic activity for the ORR in alkaline media is stemmed from the N, S codoping, tuning the optimal charge
distribution of Fe sites. In addition, the CVD approach could surpress the formation of ironcarbide-containing iron clusters (“FexC/Fe”), thereby leading to high surface areas and porosity. Furthermore, the Fe−N/S−C catalyst was further studied as a cathode catalyst in direct methanol fuel cells showing encouraging performance.
- Co-author:
- Li, Xiaohang Yang, Xiaoxuan Liu, Liting Zhao, He Li, Yawei Zhu, Haiyan* Chen, Yuanzhen Guo, Shengwu Liu, Yongning Tan, Qiang* Wu, Gang*
- Volume:
- 11
- Page Number:
- 7450−7459
- Translation or Not:
- No
- Date of Publication:
- 2021-05-08