中国科学院长春光学精密机械与物理研究所

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	Engineering the electronic structure of isolated manganese sites to improve the oxygen reduction, Zn-air battery and fuel cell performances
	X. Bai, Y. Wang, J. Y. Han, X. D. Niu and J. Q. Guan
	2023
发表期刊	Applied Catalysis B-Environmental
ISSN	0926-3373
卷号	337页码:9
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.
DOI	10.1016/j.apcatb.2023.122966
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收录类别	sci
语种	英语
引用统计
文献类型	期刊论文
条目标识符	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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