NiMn-Based Bimetal–Organic Framework Nanosheets Supported on Multi-Channel Carbon Fibers for Efficient Oxygen Electrocatalysis

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)18234-18239
Journal / PublicationAngewandte Chemie - International Edition
Volume59
Issue number41
Online published3 Jul 2020
Publication statusPublished - 5 Oct 2020
Externally publishedYes

Abstract

Developing noble-metal-free bifunctional oxygen electrocatalysts is of great significance for energy conversion and storage systems. Herein, we have developed a transformation method for growing NiMn-based bimetal–organic framework (NiMn-MOF) nanosheets on multi-channel carbon fibers (MCCF) as a bifunctional oxygen electrocatalyst. Owing to the desired components and architecture, the MCCF/NiMn-MOFs manifest comparable electrocatalytic performance towards oxygen reduction reaction (ORR) with the commercial Pt/C electrocatalyst and superior performance towards oxygen evolution reaction (OER) to the benchmark RuO2 electrocatalyst. X-ray absorption fine structure (XAFS) spectroscopy and density functional theory (DFT) calculations reveal that the strong synergetic effect of adjacent Ni and Mn nodes within MCCF/NiMn-MOFs effectively promotes the thermodynamic formation of key *O and *OOH intermediates over active NiO6 centers towards fast ORR and OER kinetics. © 2020 Wiley-VCH GmbH

Research Area(s)

  • electrocatalysis, MOFs, multi-channel carbon fiber, OER, ORR

Citation Format(s)

NiMn-Based Bimetal–Organic Framework Nanosheets Supported on Multi-Channel Carbon Fibers for Efficient Oxygen Electrocatalysis. / Cheng, Weiren; Lu, Xue Feng; Luan, Deyan et al.
In: Angewandte Chemie - International Edition, Vol. 59, No. 41, 05.10.2020, p. 18234-18239.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review