articleAngewandte Chemie International EditionJul 13, 2022Closed access

Work‐function‐induced Interfacial Built‐in Electric Fields in Os‐OsSe 2 Heterostructures for Active Acidic and Alkaline Hydrogen Evolution

DCDing ChenRLRuihu LuRYRuohan YuYDYuhang DaiHZHongyu Zhao

Wuhan University of Technology · Ji Hua Laboratory

PubMed
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Abstract

Abstract Theoretical calculations unveil that the formation of Os‐OsSe 2 heterostructures with neutralized work function (WF) perfectly balances the electronic state between strong (Os) and weak (OsSe 2 ) adsorbents and bidirectionally optimizes the hydrogen evolution reaction (HER) activity of Os sites, significantly reducing thermodynamic energy barrier and accelerating kinetics process. Then, heterostructural Os‐OsSe 2 is constructed for the first time by a molten salt method and confirmed by in‐depth structural characterization. Impressively, due to highly active sites endowed by the charge balance effect, Os‐OsSe 2 exhibits ultra‐low overpotentials for HER in both acidic (26 mV @ 10 mA cm −2 ) and…

Citation impact

287
total citations
FWCI
12.67
Percentile
100%
References
59
Citations per year

Authors

12

Topics & keywords

Topics
Keywords
  • Heterojunction
  • Catalysis
  • Hydrogen
  • Materials science
  • Work function
  • Kinetics
  • Work (physics)
  • Chemistry
UN Sustainable Development Goals
  • Affordable and clean energy
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