Cited by 108Electrocatalysts for Energy ConversionCO2 Reduction Techniques and CatalystsAdvanced Photocatalysis Techniques

Efficient and Ultrastable Seawater Electrolysis at Industrial Current Density with Strong Metal‐Support Interaction and Dual Cl − ‐Repelling Layers

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Liu, Dong, Wei, Xiaotian, Lu, Jianxi, Wang, Xin, Liu, Kai, Cai, Yaohai, Qi, Yingwei, Wang, Lei +2 more·2024·Advanced Materials

Abstract

Direct seawater electrolysis is emerging as a promising renewable energy technology for large‐scale hydrogen generation. The development of Os‐Ni 4 Mo/MoO 2 micropillar arrays with strong metal‐support interaction (MSI) as a bifunctional electrocatalyst for seawater electrolysis is reported. The micropillar structure enhances electron and mass transfer, extending catalytic reaction steps and improving seawater electrolysis efficiency. Theoretical and experimental studies demonstrate that the strong MSI between Os and Ni 4 Mo/MoO 2 optimizes the surface electronic structure of the catalyst, reducing the reaction barrier and thereby improving catalytic activity. Importantly, for the first time, a dual Cl − repelling layer is constructed by electrostatic force to safeguard active sites against Cl − attack during seawater oxidation. This includes a strong Os─Cl adsorption and an in situ‐formed MoO 4 2− layer. As a result, the Os‐Ni 4 Mo/MoO 2 catalyst exhibits an ultralow overpotential of 113 and 336 mV to reach 500 mA cm −2 for HER and OER in natural seawater from the South China Sea (without purification, with 1 m KOH added). Notably, it demonstrates superior stability, degrading only 0.37 µV h −1 after 2500 h of seawater oxidation, significantly surpassing the technical target of 1.0 µV h −1 set by the United States Department of Energy.

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Cited by

Sorted by citations

Authors
Liu, D., Wei, X., Lu, J., Wang, X., Liu, K., Cai, Y., Qi, Y., Wang, L., Ai, H., & Wang, Z.
Affiliations
  • Shenzhen University (CN)
  • Shandong Institute of Advanced Technology (CN)
  • Guangdong Provincial Key Laboratory of New Energy Materials Service Safety College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
Corresponding author
  • Wang, Lei
  • Ai, Haoqiang
Venue
Advanced Materials
Publisher
Wiley
Published
2024-10-25
Volume
36
Issue
49
Pages
e2408982-e2408982
ISSN
  • 0935-9648 (ISSN-L)
  • 1521-4095
OpenAlex
W4403776351
Cited by
108
References
51
Citations by year
2026: 56 · 2025: 52
FWCI
7.19
Type
journal article
Language
en
Open access
Locations
  • Advanced Materials (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (22209115, 51802059, 22075062)
  • Shenzhen Science and Technology Innovation Program (RCBS20231211090522040, 20220809160615001, JCYJ20210324120400002, SGDX20210823103803017, (KQTD20210811090045006)
  • Natural Science Foundation of Shandong Province (ZR2023QA006)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
Keywords
seawater electrolysis, hydrogen evolution reaction, oxygen evolution reaction, bifunctional electrocatalysts, metal-support interaction, micropillar arrays, osmium catalysts, catalyst stability, industrial current density, electrostatic forces

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