Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts
The development of efficient non-precious metal electrocatalysts for oxygen reduction reaction (ORR) to replace Pt-based methods is crucial for the applications of fuel cells and metal–air batteries. In this study, a bimetallic M-N-C catalyst with highly dispersed dual-atom Fe/Mn-Nx sites immobilize...
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| Format: | Article |
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MDPI AG
2023-07-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/13/8/1161 |
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| author | Ailan Situ Tianyou Zhao Yuetong Huang Pingzhen Li Lingui Yang Zehong Zhang Zhaochen Wang Yongsheng Ou Xiongcong Guan Jinxiu Wen Jiong Zhang Yunfeng Zhan Xiufeng Tang |
| author_facet | Ailan Situ Tianyou Zhao Yuetong Huang Pingzhen Li Lingui Yang Zehong Zhang Zhaochen Wang Yongsheng Ou Xiongcong Guan Jinxiu Wen Jiong Zhang Yunfeng Zhan Xiufeng Tang |
| author_sort | Ailan Situ |
| collection | DOAJ |
| description | The development of efficient non-precious metal electrocatalysts for oxygen reduction reaction (ORR) to replace Pt-based methods is crucial for the applications of fuel cells and metal–air batteries. In this study, a bimetallic M-N-C catalyst with highly dispersed dual-atom Fe/Mn-Nx sites immobilized on N-doped bamboo-like carbon nanotubes is prepared by the ball-milling and calcination of dual-MOFs as precursors. The rich N-doping and abundant M–Nx species contribute to the excellent intrinsic ORR activity of the catalyst, and the unique bamboo-like nanotubes morphology is beneficial for facilitating electron transfer and mass transport while simultaneously enabling the exposure of active sites. As expected, the optimized Z-Fe1Mn1-NC catalyst exhibits efficient ORR activity with a half-wave potential (E<sub>1/2</sub>) of 0.80 V in acid and 0.82 V in alkaline, and a higher electrochemical stability with the current density maintained at 91% (in 0.1 M KOH) and 86% (0.1 M HClO<sub>4</sub>) of its initial current density after 15 h of a chronoamperometric test at a high potential of 0.7 V. When further applied to Zn–air batteries, the catalyst also delivers a high open-circuit voltage, large power density, and outstanding rate performance. This work provides a novel means of designing dual metal M–Nx site-based M-N-C catalysts for ORR sustainable energy applications. |
| first_indexed | 2024-03-11T00:03:22Z |
| format | Article |
| id | doaj.art-6efd01294dd64f75a456ba278943b472 |
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| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-11T00:03:22Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-6efd01294dd64f75a456ba278943b4722023-11-19T00:35:01ZengMDPI AGCatalysts2073-43442023-07-01138116110.3390/catal13081161Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as ElectrocatalystsAilan Situ0Tianyou Zhao1Yuetong Huang2Pingzhen Li3Lingui Yang4Zehong Zhang5Zhaochen Wang6Yongsheng Ou7Xiongcong Guan8Jinxiu Wen9Jiong Zhang10Yunfeng Zhan11Xiufeng Tang12School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, ChinaSchool of Applied Physics and Materials, Wuyi University, Jiangmen 529020, ChinaSchool of Applied Physics and Materials, Wuyi University, Jiangmen 529020, ChinaSchool of Applied Physics and Materials, Wuyi University, Jiangmen 529020, ChinaSchool of Applied Physics and Materials, Wuyi University, Jiangmen 529020, ChinaSchool of Applied Physics and Materials, Wuyi University, Jiangmen 529020, ChinaSchool of Applied Physics and Materials, Wuyi University, Jiangmen 529020, ChinaSchool of Applied Physics and Materials, Wuyi University, Jiangmen 529020, ChinaSchool of Applied Physics and Materials, Wuyi University, Jiangmen 529020, ChinaSchool of Applied Physics and Materials, Wuyi University, Jiangmen 529020, ChinaSchool of Civil Engineering and Architecture, Wuyi University, Jiangmen 529020, ChinaSchool of Applied Physics and Materials, Wuyi University, Jiangmen 529020, ChinaSchool of Applied Physics and Materials, Wuyi University, Jiangmen 529020, ChinaThe development of efficient non-precious metal electrocatalysts for oxygen reduction reaction (ORR) to replace Pt-based methods is crucial for the applications of fuel cells and metal–air batteries. In this study, a bimetallic M-N-C catalyst with highly dispersed dual-atom Fe/Mn-Nx sites immobilized on N-doped bamboo-like carbon nanotubes is prepared by the ball-milling and calcination of dual-MOFs as precursors. The rich N-doping and abundant M–Nx species contribute to the excellent intrinsic ORR activity of the catalyst, and the unique bamboo-like nanotubes morphology is beneficial for facilitating electron transfer and mass transport while simultaneously enabling the exposure of active sites. As expected, the optimized Z-Fe1Mn1-NC catalyst exhibits efficient ORR activity with a half-wave potential (E<sub>1/2</sub>) of 0.80 V in acid and 0.82 V in alkaline, and a higher electrochemical stability with the current density maintained at 91% (in 0.1 M KOH) and 86% (0.1 M HClO<sub>4</sub>) of its initial current density after 15 h of a chronoamperometric test at a high potential of 0.7 V. When further applied to Zn–air batteries, the catalyst also delivers a high open-circuit voltage, large power density, and outstanding rate performance. This work provides a novel means of designing dual metal M–Nx site-based M-N-C catalysts for ORR sustainable energy applications.https://www.mdpi.com/2073-4344/13/8/1161electrocatalystsoxygen reduction reactioncarbon nanotubesdual-atom |
| spellingShingle | Ailan Situ Tianyou Zhao Yuetong Huang Pingzhen Li Lingui Yang Zehong Zhang Zhaochen Wang Yongsheng Ou Xiongcong Guan Jinxiu Wen Jiong Zhang Yunfeng Zhan Xiufeng Tang Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts Catalysts electrocatalysts oxygen reduction reaction carbon nanotubes dual-atom |
| title | Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts |
| title_full | Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts |
| title_fullStr | Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts |
| title_full_unstemmed | Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts |
| title_short | Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts |
| title_sort | dual mofs derived fe and mn species anchored on bamboo like carbon nanotubes for efficient oxygen reduction as electrocatalysts |
| topic | electrocatalysts oxygen reduction reaction carbon nanotubes dual-atom |
| url | https://www.mdpi.com/2073-4344/13/8/1161 |
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