Atomically Dispersed Nickel(I) on an Alloy-Encapsulated Nitrogen-Doped Carbon Nanotube Array for High-Performance Electrochemical CO2 Reduction Reaction

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

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Author(s)

  • Tianyu Zhang
  • Xu Han
  • Hongbin Yang
  • Aijuan Han
  • Enyuan Hu
  • Yaping Li
  • Xiao-qing Yang
  • Lei Wang
  • Junfeng Liu

Detail(s)

Original languageEnglish
Pages (from-to)12055-12061
Journal / PublicationAngewandte Chemie - International Edition
Volume59
Issue number29
Online published23 Apr 2020
Publication statusPublished - 13 Jul 2020
Externally publishedYes

Abstract

Single-atom catalysts (SACs) show great promise for electrochemical CO2 reduction reaction (CRR), but the low density of active sites and the poor electrical conduction and mass transport of the single-atom electrode greatly limit their performance. Herein, we prepared a nickel single-atom electrode consisting of isolated, high-density and low-valent nickel(I) sites anchored on a self-standing N-doped carbon nanotube array with nickel–copper alloy encapsulation on a carbon-fiber paper. The combination of single-atom nickel(I) sites and self-standing array structure gives rise to an excellent electrocatalytic CO2 reduction performance. The introduction of copper tunes the d-band electron configuration and enhances the adsorption of hydrogen, which impedes the hydrogen evolution reaction. The single-nickel-atom electrode exhibits a specific current density of −32.87 mA cm-2 and turnover frequency of 1962 h-1 at a mild overpotential of 620 mV for CO formation with 97% Faradic efficiency. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Research Area(s)

  • carbon dioxide reduction reaction, electrocatalysis, nanoarrays, single-atom catalysts

Citation Format(s)

Atomically Dispersed Nickel(I) on an Alloy-Encapsulated Nitrogen-Doped Carbon Nanotube Array for High-Performance Electrochemical CO2 Reduction Reaction. / Zhang, Tianyu; Han, Xu; Yang, Hongbin et al.
In: Angewandte Chemie - International Edition, Vol. 59, No. 29, 13.07.2020, p. 12055-12061.

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