MXene boosted metal-organic framework-derived Fe–N–C as an efficient electrocatalyst for oxygen reduction reactions

Wenling Gu; Maochun Wu; Jianbo Xu; Tianshou Zhao

doi:10.1016/j.ijhydene.2022.03.229

MXene boosted metal-organic framework-derived Fe–N–C as an efficient electrocatalyst for oxygen reduction reactions

Wenling Gu, Maochun Wu, Jianbo Xu, Tianshou Zhao

Research output: Journal article publication › Journal article › Academic research › peer-review

29 Citations (Scopus)

Abstract

Iron-nitrogen-carbon (Fe–N–C) electrocatalysts offer great promise to replace their noble metal-based counterparts for oxygen reduction reactions (ORR). However, the practical applications of this type of catalyst are hindered by insufficient accessible active sies, low electrical conductivity, and poor durability. Here, we report a Ti₃C₂ MXene supported metal-organic framework (MOF)-derived Fe–N–C (Fe-N_x/N/Ti₃C₂) catalyst to simultaneously address the issues. Owing to the negatively charged characteristics, NH₂-MIL-53(Fe) is firmly anchored on Ti₃C₂ MXene, which not only serves as a conductive substrate to alleviate the collapse and agglomeration of MOFs during the pyrolysis, but also modulates the electronic properties of active FeN_x sites to improve the electrocatalytic activity and stability. As a result, the as-prepared Fe-N_x/N/Ti₃C₂ catalyst exhibits superb ORR activity and long-term stability in both alkaline and acidic electrolytes.

Original language	English
Pages (from-to)	17224-17232
Number of pages	9
Journal	International Journal of Hydrogen Energy
Volume	47
Issue number	39
DOIs	https://doi.org/10.1016/j.ijhydene.2022.03.229
Publication status	Published - 5 May 2022
Externally published	Yes

Keywords

Electronic interaction
Fe–N–C catalysts
Metal-organic framework
MXene
Oxygen reduction reaction

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2022.03.229

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title = "MXene boosted metal-organic framework-derived Fe–N–C as an efficient electrocatalyst for oxygen reduction reactions",

abstract = "Iron-nitrogen-carbon (Fe–N–C) electrocatalysts offer great promise to replace their noble metal-based counterparts for oxygen reduction reactions (ORR). However, the practical applications of this type of catalyst are hindered by insufficient accessible active sies, low electrical conductivity, and poor durability. Here, we report a Ti3C2 MXene supported metal-organic framework (MOF)-derived Fe–N–C (Fe-Nx/N/Ti3C2) catalyst to simultaneously address the issues. Owing to the negatively charged characteristics, NH2-MIL-53(Fe) is firmly anchored on Ti3C2 MXene, which not only serves as a conductive substrate to alleviate the collapse and agglomeration of MOFs during the pyrolysis, but also modulates the electronic properties of active FeNx sites to improve the electrocatalytic activity and stability. As a result, the as-prepared Fe-Nx/N/Ti3C2 catalyst exhibits superb ORR activity and long-term stability in both alkaline and acidic electrolytes.",

keywords = "Electronic interaction, Fe–N–C catalysts, Metal-organic framework, MXene, Oxygen reduction reaction",

author = "Wenling Gu and Maochun Wu and Jianbo Xu and Tianshou Zhao",

note = "Funding Information: We gratefully acknowledge financial support from HKUST Fund of Foshan (Grant No. FSUST19-FYTRI06 ) and Guangdong-Hong Kong-Macao Joint Laboratory (Grant no. 2019B121205001 ). Publisher Copyright: {\textcopyright} 2022 Hydrogen Energy Publications LLC",

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doi = "10.1016/j.ijhydene.2022.03.229",

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AU - Gu, Wenling

AU - Wu, Maochun

AU - Xu, Jianbo

AU - Zhao, Tianshou

N1 - Funding Information: We gratefully acknowledge financial support from HKUST Fund of Foshan (Grant No. FSUST19-FYTRI06 ) and Guangdong-Hong Kong-Macao Joint Laboratory (Grant no. 2019B121205001 ). Publisher Copyright: © 2022 Hydrogen Energy Publications LLC

PY - 2022/5/5

Y1 - 2022/5/5

N2 - Iron-nitrogen-carbon (Fe–N–C) electrocatalysts offer great promise to replace their noble metal-based counterparts for oxygen reduction reactions (ORR). However, the practical applications of this type of catalyst are hindered by insufficient accessible active sies, low electrical conductivity, and poor durability. Here, we report a Ti3C2 MXene supported metal-organic framework (MOF)-derived Fe–N–C (Fe-Nx/N/Ti3C2) catalyst to simultaneously address the issues. Owing to the negatively charged characteristics, NH2-MIL-53(Fe) is firmly anchored on Ti3C2 MXene, which not only serves as a conductive substrate to alleviate the collapse and agglomeration of MOFs during the pyrolysis, but also modulates the electronic properties of active FeNx sites to improve the electrocatalytic activity and stability. As a result, the as-prepared Fe-Nx/N/Ti3C2 catalyst exhibits superb ORR activity and long-term stability in both alkaline and acidic electrolytes.

AB - Iron-nitrogen-carbon (Fe–N–C) electrocatalysts offer great promise to replace their noble metal-based counterparts for oxygen reduction reactions (ORR). However, the practical applications of this type of catalyst are hindered by insufficient accessible active sies, low electrical conductivity, and poor durability. Here, we report a Ti3C2 MXene supported metal-organic framework (MOF)-derived Fe–N–C (Fe-Nx/N/Ti3C2) catalyst to simultaneously address the issues. Owing to the negatively charged characteristics, NH2-MIL-53(Fe) is firmly anchored on Ti3C2 MXene, which not only serves as a conductive substrate to alleviate the collapse and agglomeration of MOFs during the pyrolysis, but also modulates the electronic properties of active FeNx sites to improve the electrocatalytic activity and stability. As a result, the as-prepared Fe-Nx/N/Ti3C2 catalyst exhibits superb ORR activity and long-term stability in both alkaline and acidic electrolytes.

KW - Electronic interaction

KW - Fe–N–C catalysts

KW - Metal-organic framework

KW - MXene

KW - Oxygen reduction reaction

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ER -

MXene boosted metal-organic framework-derived Fe–N–C as an efficient electrocatalyst for oxygen reduction reactions

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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