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Nanoporous Palladium Cobalt Hydride for Sustainable Hydrogen Evolution Reaction
Xiyun Huang1, Zhonghui Gao1,2, Yanqin Liang1,2,3
1School of Materials Science and Engineering, Tianjin University, Tianjin, China.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|February 21, 2026
Summary
Highly effective nanoporous palladium-cobalt hydride (np-PdCoH) was developed for the hydrogen evolution reaction (HER). This advanced electrocatalyst enhances green hydrogen production efficiency and stability.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Developing efficient electrocatalysts is crucial for green hydrogen production via the hydrogen evolution reaction (HER).
- Current electrocatalyst limitations include insufficient activity and high energy demands, hindering large-scale applications.
- Nanoporous materials offer unique properties for catalytic applications.
Purpose of the Study:
- To develop a novel electrocatalyst for efficient hydrogen evolution reaction (HER).
- To investigate the role of lattice hydrogen in modulating catalyst electronic and interfacial water structures.
- To provide insights into designing advanced hydrides for sustainable hydrogen production.
Main Methods:
- Synthesis of nanoporous palladium-cobalt hydride (np-PdCoH) using dealloying and hydrogen injection.
- Electrochemical characterization to evaluate catalytic activity and stability for HER.
- Analysis of electronic structure modulation and interfacial water structure regulation.
Main Results:
- The synthesized np-PdCoH demonstrated excellent HER performance with a low overpotential of 37 mV at 10 mA cm⁻².
- The catalyst exhibited remarkable stability, maintaining performance for 480 hours.
- Lattice hydrogen introduction effectively modulated the electronic structure and interfacial water, facilitating water splitting.
Conclusions:
- Nanoporous palladium-cobalt hydride (np-PdCoH) is a highly effective electrocatalyst for HER.
- The strategy of incorporating lattice hydrogen offers a new pathway for designing advanced electrocatalysts.
- This research contributes to the advancement of sustainable hydrogen production technologies.
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