Cited by 230Electrocatalysts for Energy ConversionSurface Modification and SuperhydrophobicityMinerals Flotation and Separation Techniques

Superaerophilic/superaerophobic cooperative electrode for efficient hydrogen evolution reaction via enhanced mass transfer

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Zhang, Chunhui, Xu, Zhe, Han, Nana, Tian, Ye, Kallio, Tanja, Yu, Cunming, Jiang, Lei·2023·Science Advances

Abstract

Hydrogen evolution reaction (HER), as an effective method to produce green hydrogen, is greatly impeded by inefficient mass transfer, i.e., bubble adhesion on electrode, bubble dispersion in the vicinity of electrode, and poor dissolved H 2 diffusion, which results in blocked electrocatalytic area and large H 2 concentration overpotential. Here, we report a superaerophilic/superaerophobic (SAL/SAB) cooperative electrode to efficiently promote bubble transfer by asymmetric Laplace pressure and accelerate dissolved H 2 diffusion through reducing diffusion distance. Benefiting from the enhanced mass transfer, the overpotential for the SAL/SAB cooperative electrode at −10 mA cm −2 is only −19 mV, compared to −61 mV on the flat Pt electrode. By optimizing H 2 SO 4 concentration, the SAL/SAB cooperative electrode can achieve ultrahigh current density (−1867 mA cm −2 ) at an overpotential of −500 mV. We can envision that the SAL/SAB cooperative strategy is an effective method to improve HER efficiency and stimulate the understanding of various gas-involved processes.

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Authors
Zhang, C., Xu, Z., Han, N., Tian, Y., Kallio, T., Yu, C., & Jiang, L.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Beihang University (CN)
  • Aalto University (FI)
Corresponding author
  • Yu, Cunming
  • Jiang, Lei
Venue
Science Advances
Published
2023-01-20
Volume
9
Issue
3
Pages
eadd6978-eadd6978
ISSN
2375-2548 (ISSN-L)
OpenAlex
W4317254717
Cited by
230
References
66
Citations by year
2026: 70 · 2025: 66 · 2024: 63 · 2023: 31
FWCI
10.99
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Science Advances (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Aaltodoc (Aalto University) (submittedVersion, cc-by-nc)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Materials Science › Surfaces, Coatings and Films › Surface Modification and Superhydrophobicity
  • Physical Sciences › Environmental Science › Water Science and Technology › Minerals Flotation and Separation Techniques
Keywords
hydrogen evolution reaction, superaerophobic surfaces, bubble adhesion, bubble dispersion, Laplace pressure, hydrogen diffusion, mass transfer enhancement, green hydrogen production, electrocatalysis, sulfuric acid electrolyte

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