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Related Experiment Video

Updated: May 18, 2026

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

Pt5Gd as a highly active and stable catalyst for oxygen electroreduction.

María Escudero-Escribano¹, Arnau Verdaguer-Casadevall, Paolo Malacrida

¹Center for Individual Nanoparticle Functionality, Department of Physics, Building 312, Technical University of Denmark (DTU), DK-2800 Lyngby, Denmark.

Journal of the American Chemical Society

|September 25, 2012

Summary

Platinum-gadolinium (Pt(5)Gd) catalysts show a five-fold increase in oxygen reduction reaction (ORR) activity compared to pure platinum. This enhanced activity, attributed to compressive strain, makes Pt(5)Gd a promising material for fuel cell catalysts.

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Area of Science:

Electrochemistry
Materials Science
Catalysis

Background:

Developing efficient electrocatalysts is crucial for advancing fuel cell technology.
Platinum-based alloys are widely investigated for oxygen reduction reaction (ORR) catalysis.

Purpose of the Study:

To investigate the activity and stability of Platinum-Gadolinium (Pt(5)Gd) for the oxygen reduction reaction (ORR).
To elucidate the mechanisms behind the enhanced catalytic performance of Pt(5)Gd.

Main Methods:

Electrochemical measurements
Angle-resolved X-ray photoelectron spectroscopy (AR-XPS)
Density functional theory (DFT) calculations

Main Results:

Sputter-cleaned Pt(5)Gd exhibited a 5-fold increase in ORR activity compared to pure Pt at 0.9 V.
AR-XPS revealed the formation of a platinum overlayer on Pt(5)Gd after electrochemical testing.
Enhanced activity is attributed to compressive strain effects within the catalyst structure.

Conclusions:

Pt(5)Gd demonstrates significantly enhanced ORR activity and high stability.
These bimetallic electrocatalysts show great promise for future fuel cell cathode applications.