Self-Reconstructed Spinel Surface Structure Enabling the Long-Term Stable Hydrogen Evolution Reaction/Oxygen Evolution Reaction Efficiency of FeCoNiRu High-Entropy Alloyed Electrocatalyst

Kang Huang, Jiuyang Xia, Yu Lu, Bowei Zhang*, Wencong Shi, Xun Cao, Xinyue Zhang, Lilia M. Woods, Changcun Han, Chunjin Chen*, Tian Wang, Junsheng Wu*, Yizhong Huang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

82 Citations (Scopus)

Abstract

High catalytic efficiency and long-term stability are two main components for the performance assessment of an electrocatalyst. Previous attention has been paid more to efficiency other than stability. The present work is focused on the study of the stability processed on the FeCoNiRu high-entropy alloy (HEA) in correlation with its catalytic efficiency. This catalyst has demonstrated not only performing the simultaneous hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) with high efficiency but also sustaining long-term stability upon HER and OER. The study reveals that the outstanding stability is attributed to the spinel oxide surface layer developed during evolution reactions. The spinel structure preserves the active sites that are inherited from the HEA's intrinsic structure. This work will provide an insightful direction/pathway for the design and manufacturing activities of other metallic electrocatalysts and a benchmark for the assessment of their efficiency–stability relationship.

Original languageEnglish
Article number2300094
JournalAdvanced Science
Volume10
Issue number14
DOIs
Publication statusPublished - May 17 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2023 The Authors. Advanced Science published by Wiley-VCH GmbH.

ASJC Scopus Subject Areas

  • Medicine (miscellaneous)
  • General Chemical Engineering
  • General Materials Science
  • Biochemistry, Genetics and Molecular Biology (miscellaneous)
  • General Engineering
  • General Physics and Astronomy

Keywords

  • atomic lattice hollow sites
  • high-entropy alloys
  • overall water splitting
  • spinel oxide
  • surface self-reconstruction

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