Highly Disordered Fe-Doped CeO2 with Oxygen Vacancies Facilitates Electrocatalytic Water Oxidation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Xuyun Guo
  • Wei-Hsiang Huang
  • Ye Zhu
  • Zilong Wang
  • Chu-Chen Chueh
  • Chi-Liang Chen

Detail(s)

Original languageEnglish
Pages (from-to)9434–9443
Journal / PublicationEnergy & Fuels
Volume37
Issue number13
Online published14 Jun 2023
Publication statusPublished - 6 Jul 2023

Abstract

The practical application of electrocatalytic water splitting is hindered by the sluggish anodic oxygen evolution reaction (OER), where the exploration of efficient and stable electrocatalysts toward water oxidation remains a great challenge. Herein, we report an active iron-doped ceria (FeOx/CeO2) catalyst with a highly disordered feature decorated on three-dimensional (3D) nickel foam, which can directly serve as the superior OER electrode in alkaline media. The highly disordered Fe-doped CeO2 catalyst displays remarkable OER performance with a low overpotential of 252 mV to achieve 10 mA cm-2, a small Tafel slope of 45 mV dec-1, and long-term durability for at least 48 h with a stable structure. The superior OER activity of FeOx/CeO2 is attributed to the lattice oxygen activation mechanism facilitated by its disordered structure as well as the high electrochemical surface area. This study provides valuable insights into the rational design of efficient OER catalysts through tailoring the catalyst structure and reaction pathway. © 2023 American Chemical Society.

Research Area(s)

  • EVOLUTION, NANOCRYSTALLINE, REDUCTION, DESIGN, CERIUM, SITES

Citation Format(s)

Highly Disordered Fe-Doped CeO2 with Oxygen Vacancies Facilitates Electrocatalytic Water Oxidation. / Sun, Qidi; Liu, Yizhe; Li, Xintong et al.
In: Energy & Fuels, Vol. 37, No. 13, 06.07.2023, p. 9434–9443.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review