| 论文标题 |
Chemical Vapor Deposition for N/S-Doped Single Fe Site Catalysts for the Oxygen Reduction in Direct Methanol Fuel Cells |
| 作者 |
Li, Xiaohang Yang, Xiaoxuan Liu, Liting Zhao, He Li, Yawei Zhu, Haiyan* Chen, Yuanzhen Guo, Shengwu Liu, Yongning Tan, Qiang* Wu, Gang* |
| 发表/完成日期 |
2021-05-08 |
| 期刊名称 |
ACS Catalysis |
| 期卷 |
11 |
| 相关文章 |
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| 论文简介 |
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. |
(创新港)
