Molten Salt-Assisted Synthesis of Ferric Oxide/M–N–C Nanosheet Electrocatalysts for Efficient Oxygen Reduction Reaction
Zhiwei Lu
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorWeiming Gong
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorJinpeng Chen
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorPeng Guo
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorYingxian Zhang
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorLan Zhang
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorMinglei Yan
College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorChun Wu
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorMengmeng Sun
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorGehong Su
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorWei Wang
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorYanying Wang
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorJianshan Ye
School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641 P. R. China
Search for more papers by this authorWenxin Zhu
College of Food Science and Engineering, Northwest A&F University, Yangling, 712100 P. R. China
Search for more papers by this authorCorresponding Author
Jianlong Wang
College of Food Science and Engineering, Northwest A&F University, Yangling, 712100 P. R. China
E-mail: [email protected]; [email protected]
Search for more papers by this authorCorresponding Author
Hanbing Rao
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
E-mail: [email protected]; [email protected]
Search for more papers by this authorZhiwei Lu
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorWeiming Gong
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorJinpeng Chen
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorPeng Guo
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorYingxian Zhang
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorLan Zhang
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorMinglei Yan
College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorChun Wu
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorMengmeng Sun
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorGehong Su
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorWei Wang
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorYanying Wang
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
Search for more papers by this authorJianshan Ye
School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641 P. R. China
Search for more papers by this authorWenxin Zhu
College of Food Science and Engineering, Northwest A&F University, Yangling, 712100 P. R. China
Search for more papers by this authorCorresponding Author
Jianlong Wang
College of Food Science and Engineering, Northwest A&F University, Yangling, 712100 P. R. China
E-mail: [email protected]; [email protected]
Search for more papers by this authorCorresponding Author
Hanbing Rao
College of Science, Sichuan Agricultural University, Xin Kang Road, Ya'an, Yucheng, 625014 P.R. China
E-mail: [email protected]; [email protected]
Search for more papers by this authorAbstract
Efficient, stable, and low-cost oxygen reduction catalysts are the key to the large-scale application of metal–air batteries. Herein, high-dispersive Fe2O3 nanoparticles (NPs) with abundant oxygen vacancies uniformly are anchored on lignin-derived metal–nitrogen–carbon (M–N–C) hierarchical porous nanosheets as efficient oxygen reduction reaction (ORR) catalysts (Fe2O3/M–N–C, M═Cu, Mn, W, Mo) based on a general and economical KCl molten salt-assisted method. The combination of Fe with the highly electronegative O induces charge redistribution through the Fe–O–M structure, thereby reducing the adsorption energy of oxygen-containing substances. The coupling effect of Fe2O3 NPs with M–N–C expedites the catalytic activity toward ORR by promoting proton generation on Fe2O3 and transfer to M–N–C. Experimental and theoretical calculation further revealed the remarkable electronic structure evolution of the metal site during the ORR process, where the emission density and local magnetic moment of the metal atoms change continuously throughout their reaction. The unique layered porous structure and highly active M–N4 sites resulted in the excellent ORR activity of Fe2O3/Cu–N–C with the onset potential of 0.977 V, which is superior to Pt/C. This study offers a feasible strategy for the preparation of non-noble metal catalysts and provides a new comprehension of the catalytic mechanism of M–N–C catalysts.
Conflict of Interest
The authors declare no conflict of interest.
Open Research
Data Availability Statement
The data that support the findings of this study are available in the supplementary material of this article.
Supporting Information
| Filename | Description |
|---|---|
| smtd202401278-sup-0001-SuppMat.docx11.1 MB | Supporting Information |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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