Highly Efficient Electrocatalytic Oxygen Evolution Over Atomically Dispersed Synergistic Ni/Co Dual Sites

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Author(s)

  • Zhihao Pei
  • Xue Feng Lu
  • Huabin Zhang
  • Yunxiang Li

Detail(s)

Original languageEnglish
Article numbere202207537
Journal / PublicationAngewandte Chemie - International Edition
Volume61
Issue number40
Online published27 Jul 2022
Publication statusPublished - 4 Oct 2022
Externally publishedYes

Abstract

Single-atom catalysts (SACs) are being pursued as economical electrocatalysts. However, their low active-site loading, poor interactions, and unclear catalytic mechanism call for significant advances. Herein, atomically dispersed Ni/Co dual sites anchored on nitrogen-doped carbon (a-NiCo/NC) hollow prisms are rationally designed and synthesized. Benefiting from the atomically dispersed dual-metal sites and their synergistic interactions, the obtained a-NiCo/NC sample exhibits superior electrocatalytic activity and kinetics towards the oxygen evolution reaction. Moreover, density functional theory calculations indicate that the strong synergistic interactions from heteronuclear paired Ni/Co dual sites lead to the optimization of the electronic structure and the reduced reaction energy barrier. This work provides a promising strategy for the synthesis of high-efficiency atomically dispersed dual-site SACs in the field of electrochemical energy storage and conversion. © 2022 Wiley-VCH GmbH.

Research Area(s)

  • Dual-Metal Sites, Hollow Prisms, Oxygen Evolution Reaction, Single-Atom Catalysts, Synergistic Interactions