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High-entropy LDH coupled with Ru nanoclusters for efficient overall seawater splitting
Xiaolin Li1, Ruixing Tang1, Junxuan Liu1
1Key Laboratory of Special Functional Materials for Ecological Environment and Information (Ministry of Education), School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China. liuhui2013@hebut.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|June 16, 2026
Summary
A novel bifunctional high-entropy catalyst with ruthenium nanoclusters enables efficient and durable seawater electrolysis for green hydrogen production. This advanced electrocatalyst demonstrates low voltage and sustained stability for industrial applications.
Area of Science:
- Materials Science
- Electrochemistry
- Green Chemistry
Background:
- Developing efficient electrocatalysts for seawater splitting is crucial for sustainable hydrogen production.
- High-entropy materials offer unique properties for catalytic applications.
Purpose of the Study:
- To report a bifunctional high-entropy manganese-iron-cobalt-nickel-copper layered double hydroxide (MnFeCoNiCu LDH) electrocatalyst decorated with ruthenium (Ru) nanoclusters.
- To evaluate its performance for durable seawater electrolysis.
Main Methods:
- Synthesis of a heterostructure electrocatalyst combining MnFeCoNiCu LDH and Ru nanoclusters.
- Electrochemical characterization of the catalyst for seawater splitting.
- Durability testing at industrial current densities.
- Theoretical calculations to understand the mechanism.
Main Results:
- The catalyst achieved a low cell voltage of 1.70 V at 10 mA cm-2 for overall seawater splitting.
- Demonstrated remarkable stability, operating for 50 hours at 300 mA cm-2.
- Ru nanoclusters were found to optimize the electronic structure for enhanced charge transfer.
Conclusions:
- The Ru-decorated MnFeCoNiCu LDH is a highly efficient and durable bifunctional electrocatalyst for seawater electrolysis.
- This work presents a promising strategy for large-scale green hydrogen production.
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