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Updated: Jan 16, 2026

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
Published on: April 27, 2018
Boosting and stabilizing oxygen evolution reaction through Ru single atoms anchored amorphous NiMoOx electrocatalyst
Jiayi Li1, Yiming Zhu1, Changyuan Li2
1Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, China.
Researchers developed a novel electrocatalyst using amorphous nickel molybdate with ruthenium single atoms for efficient water splitting. This catalyst demonstrates excellent performance and durability for sustainable hydrogen production.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Efficient and durable electrocatalysts are crucial for water splitting technologies to produce sustainable hydrogen.
- Integrating amorphous oxide supports with single metal atoms offers precise electronic structure tuning and enhanced active site exposure.
Purpose of the Study:
- To develop and characterize a novel electrocatalyst for the oxygen evolution reaction (OER).
- To investigate the performance and durability of amorphous NiMoOₓ supported Ru single atoms (a-RNMO) in water electrolysis.
Main Methods:
- Synthesis of amorphous NiMoOₓ supported Ru single atoms (a-RNMO).
- Electrochemical testing in an anion exchange membrane water electrolyzer.
- Time-resolved operando Quick X-ray absorption spectroscopy.
- Theoretical calculations.
Main Results:
- The a-RNMO catalyst achieved a low cell voltage of 1.78 V at 1 A cm⁻² with notable durability.
- Operando spectroscopy revealed Mo leaching and structural reconstruction to NiOOH.
- Theoretical calculations indicated a "complementary amorphous-electronic" mechanism enhancing activity.
Conclusions:
- Amorphous NiMoOₓ anchored with Ru single atoms is a high-performance OER electrocatalyst.
- The amorphous structure and Ru single atoms synergistically improve active site exposure and electronic properties.
- This work provides insights into designing advanced electrocatalysts for sustainable hydrogen production.
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