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Updated: Aug 6, 2025

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

Mesoporous Pt@Pt-skin Pt₃Ni core-shell framework nanowire electrocatalyst for efficient oxygen reduction.

Hui Jin¹, Zhewei Xu¹, Zhi-Yi Hu¹

¹International School of Materials Science and Engineering (ISMSE), Nanostructure Research Centre, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China.

Nature Communications

|March 19, 2023

Summary

Researchers developed novel platinum-based nanoarchitectures, specifically Pt@Pt-skin Pt3Ni core-shell nanowires, for enhanced electrocatalysis. These catalysts show superior activity and stability for the oxygen reduction reaction, improving platinum efficiency.

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Last Updated: Aug 6, 2025

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

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Published on: April 27, 2018

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

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A Continuous-flow Photocatalytic Reactor for the Precisely Controlled Deposition of Metallic Nanoparticles

A Continuous-flow Photocatalytic Reactor for the Precisely Controlled Deposition of Metallic Nanoparticles

Published on: April 10, 2019

Area of Science:

Materials Science
Electrochemistry
Nanotechnology

Background:

Designing platinum-based nanoarchitectures with controlled composition and morphology is crucial for improving electrocatalytic performance.
Existing catalysts often face limitations in activity, stability, and efficient utilization of platinum.

Purpose of the Study:

To rationally design and synthesize novel anisotropic mesoporous Pt@Pt-skin Pt3Ni core-shell framework nanowires.
To evaluate the electrocatalytic activity and stability of these nanostructures for the oxygen reduction reaction.

Main Methods:

Synthesis of Pt@Pt-skin Pt3Ni core-shell framework nanowires with controlled anisotropic and mesoporous structures.
Electrocatalytic testing for the oxygen reduction reaction (ORR), including measurements of mass activity, specific activity, and long-term stability.
Characterization of the catalyst's structure and surface properties.

Main Results:

The synthesized catalyst exhibits a uniform core-shell structure with an ultrathin atomic-jagged Pt nanowire core and a mesoporous Pt-skin Pt3Ni framework shell.
Exceptional mass activity (6.69 A/mgPt) and specific activity (8.42 mA/cm2 at 0.9 V vs RHE) for the oxygen reduction reaction.
High stability demonstrated by negligible activity decay after 50,000 cycles.

Conclusions:

The unique mesoporous Pt@Pt-skin Pt3Ni core-shell framework nanowire configuration enhances catalytic sites and weakens oxygenated species chemisorption.
This design significantly boosts catalytic activity and stability for electrocatalysis, particularly the oxygen reduction reaction.
The study highlights a promising strategy for developing highly efficient and stable platinum-based electrocatalysts with improved platinum utilization.