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Observation of a robust and active catalyst for hydrogen evolution under high current densities

Chemistry

Observation of a robust and active catalyst for hydrogen evolution under high current densities

Y. Zhang, K. E. Arpino, et al.

This groundbreaking research by Yudi Zhang and colleagues explores the exceptional catalytic properties of Sr2RuO4 single crystals for hydrogen evolution reactions, showcasing their impressive activity and stability, even under demanding conditions. The findings unveil exciting possibilities for industrial-scale HER catalyst design!

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Playback language: English
Abstract
This paper investigates the catalytic behavior of Sr2RuO4 bulk single crystals for hydrogen evolution reaction (HER). The crystals demonstrate remarkable activity under a current density of 1000 mA cm⁻², requiring overpotentials of 182 and 278 mV in 0.5 M H2SO4 and 1 M KOH electrolytes, respectively. The catalysts maintain stability for extended periods (up to 56 days) under high current densities and elevated temperatures (70 °C). In-situ formation of ferromagnetic Ru clusters on the crystal surface contributes to low charge transfer resistance and high wettability, facilitating rapid gas bubble removal. The findings highlight the potential of designing HER catalysts for industrial-scale applications.
Publisher
Nature Communications
Published On
Dec 16, 2022
Authors
Yudi Zhang, Kathryn E. Arpino, Qun Yang, Naoki Kikugawa, Dmitry A. Sokolov, Clifford W. Hicks, Jian Liu, Claudia Felser, Guowei Li
Tags
Sr2RuO4
hydrogen evolution reaction
catalytic behavior
single crystals
ferromagnetic Ru clusters
stability
overpotential

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