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Molten-salt thermosynthesis of amorphous RuCoFe nanosheets as bifunctional catalysts for electrochemical water splitting

Authors
  • Zhang, Jiaxi1
  • Zhao, Zebi1
  • Wang, Ruyue1
  • Du, Peng1
  • He, Xian1
  • Zhang, Xinlai1
  • Yang, Jingkai1
  • Liu, Wenjun1
  • Huang, Kai1
  • Pan, Xuchao2
  • Lei, Ming1
  • 1 Beijing University of Posts and Telecommunications, Beijing, 100876, People’s Republic of China , Beijing (China)
  • 2 Nanjing University of Science &Technology, Nanjing, 210094, China , Nanjing (China)
Type
Published Article
Journal
Applied Physics A
Publisher
Springer-Verlag
Publication Date
Jul 17, 2021
Volume
127
Issue
8
Identifiers
DOI: 10.1007/s00339-021-04756-7
Source
Springer Nature
Keywords
Disciplines
  • Article
License
Yellow

Abstract

Efficient electrolysis of water is vital to realize the sustainable development of energy, but it is still a challenge. Herein, we propose a common approach to prepare amorphous noble metal alloy nanosheets as advanced bifunctional catalysts to drive the efficient electrochemical water splitting by rapidly annealing metal acetylacetonate (metal = Ru,Co,Fe) and alkali salts, which allows to optimize their catalytic properties by tuning the introduction of transition metals. In particular, as-prepared amorphous RuCoFe nanosheets achieve not only an extremely low overpotential of 2.04 mV at 10 mA cm−2 for hydrogen evolution reaction under alkaline media, but also a high-performance and stable overall water electrolysis with a potential of mere 1.56 V at 10 mA cm−2. Considering the advantages of polymetallic amorphous nanosheets electrocatalysts, our proposed synthetic strategy could be versatile and applicable toward further developing other functional polycompounds for energy generation, storage and conversion.

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