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

Zhang Y, Arpino KE, Yang Q, Kikugawa N, Sokolov DA, Hicks CW, Liu J, Felser C, Li G (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Nature Communications Nature Publishing Group: Nature Communications

Book Volume: 13

Article Number: 7784

Journal Issue: 1

DOI: 10.1038/s41467-022-35464-2

Abstract

Despite the fruitful achievements in the development of hydrogen production catalysts with record-breaking performances, there is still a lack of durable catalysts that could work under large current densities (>1000 mA cm−2). Here, we investigated the catalytic behaviors of Sr2RuO4 bulk single crystals. This crystal has demonstrated remarkable activities under the current density of 1000 mA cm−2, which require overpotentials of 182 and 278 mV in 0.5 M H2SO4 and 1 M KOH electrolytes, respectively. These materials are stable for 56 days of continuous testing at a high current density of above 1000 mA cm−2 and then under operating temperatures of 70 °C. The in-situ formation of ferromagnetic Ru clusters at the crystal surface is observed, endowing the single-crystal catalyst with low charge transfer resistance and high wettability for rapid gas bubble removal. These experiments exemplify the potential of designing HER catalysts that work under industrial-scale current density.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) University of Chinese Academy of Sciences CN China (CN) Ningbo Institute of Industrial Technology / Ningbo Institute of Materials Technology & Engineering (NIMTE) / 中国科学院宁波材料技术与工程研究所 CN China (CN)

How to cite

APA:

Zhang, Y., Arpino, K.E., Yang, Q., Kikugawa, N., Sokolov, D.A., Hicks, C.W.,... Li, G. (2022). Observation of a robust and active catalyst for hydrogen evolution under high current densities. Nature Communications, 13(1). https://doi.org/10.1038/s41467-022-35464-2

MLA:

Zhang, Yudi, et al. "Observation of a robust and active catalyst for hydrogen evolution under high current densities." Nature Communications 13.1 (2022).

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