Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts

Situ, Ailan; Zhao, Tianyou; Huang, Yuetong; Li, Pingzhen; Yang, Lingui; Zhang, Zehong; Wang, Zhaochen; Ou, Yongsheng; Guan, Xiongcong; Wen, Jinxiu; Zhang, Jiong; Zhan, Yunfeng; Tang, Xiufeng

doi:10.3390/catal13081161

Open AccessArticle

Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts

by

Ailan Situ

^1,†,

Tianyou Zhao

^1,†,

Yuetong Huang

¹,

Pingzhen Li

¹,

Lingui Yang

¹,

Zehong Zhang

¹,

Zhaochen Wang

¹,

Yongsheng Ou

¹,

Xiongcong Guan

¹,

Jinxiu Wen

^1,2,

Jiong Zhang

³,

Yunfeng Zhan

^1,2,*

and

Xiufeng Tang

^1,2,*

¹

School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, China

²

Research Center of Flexible Sensing Materials and Devices, Wuyi University, Jiangmen 529020, China

³

School of Civil Engineering and Architecture, Wuyi University, Jiangmen 529020, China

^*

Authors to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Catalysts 2023, 13(8), 1161; https://doi.org/10.3390/catal13081161

Submission received: 5 July 2023 / Revised: 25 July 2023 / Accepted: 25 July 2023 / Published: 27 July 2023

(This article belongs to the Special Issue Non-noble Metal Electrocatalysts for the Oxygen Reduction Reaction)

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Abstract

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_1/2) 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 HClO₄) 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.

Keywords: electrocatalysts; oxygen reduction reaction; carbon nanotubes; dual-atom

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MDPI and ACS Style

Situ, A.; Zhao, T.; Huang, Y.; Li, P.; Yang, L.; Zhang, Z.; Wang, Z.; Ou, Y.; Guan, X.; Wen, J.; et al. Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts. Catalysts 2023, 13, 1161. https://doi.org/10.3390/catal13081161

AMA Style

Situ A, Zhao T, Huang Y, Li P, Yang L, Zhang Z, Wang Z, Ou Y, Guan X, Wen J, et al. Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts. Catalysts. 2023; 13(8):1161. https://doi.org/10.3390/catal13081161

Chicago/Turabian Style

Situ, Ailan, Tianyou Zhao, Yuetong Huang, Pingzhen Li, Lingui Yang, Zehong Zhang, Zhaochen Wang, Yongsheng Ou, Xiongcong Guan, Jinxiu Wen, and et al. 2023. "Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts" Catalysts 13, no. 8: 1161. https://doi.org/10.3390/catal13081161

APA Style

Situ, A., Zhao, T., Huang, Y., Li, P., Yang, L., Zhang, Z., Wang, Z., Ou, Y., Guan, X., Wen, J., Zhang, J., Zhan, Y., & Tang, X. (2023). Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts. Catalysts, 13(8), 1161. https://doi.org/10.3390/catal13081161

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Dual-MOFs-Derived Fe and Mn Species Anchored on Bamboo-like Carbon Nanotubes for Efficient Oxygen Reduction as Electrocatalysts

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