articleNature CommunicationsJul 14, 2023GOLD OA

Tailoring a local acid-like microenvironment for efficient neutral hydrogen evolution

XZXiaozhong ZhengXSXiaoyun ShiHNHonghui NingRYRui YangBLBing Lu

Zhejiang University · Zhengzhou University · +1 more institution

PubMed
Indexed incrossrefdoajpubmed

Abstract

Abstract Electrochemical hydrogen evolution reaction in neutral media is listed as the most difficult challenges of energy catalysis due to the sluggish kinetics. Herein, the Ir-H x WO 3 catalyst is readily synthesized and exhibits enhanced performance for neutral hydrogen evolution reaction. H x WO 3 support is functioned as proton sponge to create a local acid-like microenvironment around Ir metal sites by spontaneous injection of protons to WO 3 , as evidenced by spectroscopy and electrochemical analysis. Rationalize revitalized lattice-hydrogen species located in the interface are coupled with H ad atoms on metallic Ir surfaces via thermodynamically favorable Volmer-Tafel steps, and thereby a fast…

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Topics & keywords

Topics
Keywords
  • Tafel equation
  • Overpotential
  • Catalysis
  • Electrochemistry
  • Hydrogen production
  • Metal
  • Chemistry
  • Hydrogen
UN Sustainable Development Goals
  • Affordable and clean energy
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