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Updated: Oct 28, 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

Optimized oxygen reduction activity by tuning shell component in Pd@Pt-based core-shell electrocatalysts.

Yafeng Zhang¹, Kai Ye¹, Qingqing Gu²

¹School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China.

Journal of Colloid and Interface Science

|July 15, 2021

Summary

We developed a versatile synthesis for palladium-platinum (Pd@Pt) core-shell nanoparticles with tunable alloy shells. These catalysts show enhanced oxygen reduction reaction (ORR) activity and stability, crucial for fuel cell applications.

Keywords:

Core-shell Electrocatalyst Oxygen reduction reaction PdPtNi Versatile co-reduction synthesis

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Last Updated: Oct 28, 2025

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

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Published on: April 27, 2018

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Area of Science:

Nanomaterials Synthesis
Catalysis
Electrochemistry

Background:

Core-shell nanoparticles offer unique properties by combining different materials.
Alloy catalysts can enhance electrocatalytic performance compared to monometallic counterparts.
Palladium-platinum (Pd@Pt) nanostructures are promising for oxygen reduction reaction (ORR) catalysis.

Purpose of the Study:

To develop a versatile co-reduction synthesis for Pd@Pt-based core-shell nanoparticles.
To tune the shell composition from Pt to PtNi and PtNi-M (M=Fe, Cu) alloys.
To investigate the effect of shell composition on ORR activity and stability.

Main Methods:

Co-reduction synthesis of Pd@Pt core-shell nanoparticles.
Tuning shell composition with Ni, Fe, or Cu.
Electrochemical characterization of ORR activity and stability.

Main Results:

Pd@PtNi/C catalysts exhibited a mass activity of 1.29 A mg^-1_Pt for ORR.
Incorporating Fe or Cu into the shell (Pd@PtNiFe/C, Pd@PtNiCu/C) further increased mass activity by 1.1x and 1.4x, respectively.
Pd@PtNiFe/C and Pd@PtNiCu/C showed improved stability with lower activity decay (11.0% and 10.6%) after 5,000 cycles compared to Pd@PtNi/C (12.4%).

Conclusions:

The co-reduction synthesis provides a versatile route to tune Pd@Pt core-shell nanoparticle composition.
Ternary PtNi-M alloy shells significantly enhance ORR activity and durability.
These advanced catalysts show great potential for applications in fuel cells and other electrochemical energy conversion systems.