TY - JOUR
T1 - MXene boosted metal-organic framework-derived Fe–N–C as an efficient electrocatalyst for oxygen reduction reactions
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
Y1 - 2022
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
UR - http://www.scopus.com/inward/record.url?scp=85127905685&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2022.03.229
DO - 10.1016/j.ijhydene.2022.03.229
M3 - Journal article
AN - SCOPUS:85127905685
SN - 0360-3199
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
ER -
