Engineering the electronic structure of isolated manganese sites to improve the oxygen reduction, Zn-air battery and fuel cell performances
文献类型：期刊论文
| 作者 | X. Bai, Y. Wang, J. Y. Han, X. D. Niu and J. Q. Guan |
| 刊名 | Applied Catalysis B-Environmental
 |
| 出版日期 | 2023 |
| 卷号 | 337页码:9 |
| ISSN号 | 0926-3373 |
| DOI | 10.1016/j.apcatb.2023.122966 |
| 英文摘要 | Single-atom manganese catalysts possess high stability in the oxygen reduction reaction (ORR) due to their lower Fenton reaction activity. Here, we employ N- and S-co-coordination strategy to modulate the microstructural Mn sites towards high-efficiency ORR. The fabricated Mn-N/S-C catalyst with isolated Mn-N2S2 sites demonstrates a positive half-wave potential of 0.91 V for the ORR. The fabricated zinc-air battery with Mn-N/S-C as the cathode affords a maximal power density of 193 mW cm-2 and superior output stability. Moreover, the maximal power density is increased by 1.53 times compared with S-free Mn-N-C catalyst in anion exchange membrane fuel cells (AEMFCs). Both experimental characterizations and theoretical simulations unveil that the main active sites in the Mn-N/S-C should be Mn-N2S2 moiety embedded into the graphene framework (Mn-N2S2G). Further computational results demonstrate that the S atom doping and asymmetry of structure lead to higher ORR activities of ortho-Mn-N2S2G than Mn-N4G, Mn-N3SG, para-Mn-N2S2G and Mn-NS3G. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/67339]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | X. Bai, Y. Wang, J. Y. Han, X. D. Niu and J. Q. Guan. Engineering the electronic structure of isolated manganese sites to improve the oxygen reduction, Zn-air battery and fuel cell performances[J]. Applied Catalysis B-Environmental,2023,337:9. |
| APA | X. Bai, Y. Wang, J. Y. Han, X. D. Niu and J. Q. Guan.(2023).Engineering the electronic structure of isolated manganese sites to improve the oxygen reduction, Zn-air battery and fuel cell performances.Applied Catalysis B-Environmental,337,9. |
| MLA | X. Bai, Y. Wang, J. Y. Han, X. D. Niu and J. Q. Guan."Engineering the electronic structure of isolated manganese sites to improve the oxygen reduction, Zn-air battery and fuel cell performances".Applied Catalysis B-Environmental 337(2023):9. |
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