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Related Experiment Video

Updated: Feb 22, 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

Core-Shell Au@Metal-Oxide Nanoparticle Electrocatalysts for Enhanced Oxygen Evolution.

Alaina L Strickler¹, Marı A Escudero-Escribano^1,2, Thomas F Jaramillo^1,3

¹Department of Chemical Engineering, Stanford University , Stanford, California 94305, United States.

|September 26, 2017

Summary

Gold nanoparticles enhance oxygen evolution reaction (OER) catalysis for renewable energy. Core-shell structures with gold cores and metal-oxide shells show improved activity and stability for water electrolyzers and batteries.

Keywords:

Oxygen evolution reaction core−shell nanoparticles electrocatalysts nanostructures

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Last Updated: Feb 22, 2026

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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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:

Materials Science
Electrochemistry
Renewable Energy Technologies

Background:

Enhanced catalysis for electrochemical oxygen evolution is crucial for water electrolyzers and metal-air batteries.
Gold (Au) supports have previously enhanced the activity of 3d transition metal-oxide thin films for the oxygen evolution reaction (OER) in alkaline media.

Purpose of the Study:

To investigate the impact of Au supports on high surface area, device-ready core-shell nanoparticles for OER catalysis.
To establish performance trends and demonstrate universal activity enhancement using Au-cores in 3d transition metal-oxide nanoparticles.

Main Methods:

Fabrication of core-shell nanoparticles with a gold core and various metal-oxide shells (Au@M_xO_y, where M = Ni, Co, Fe, CoFe).
Systematic electrochemical evaluation of the synthesized nanoparticles for OER activity and stability.

Main Results:

A universal activity enhancement was observed when employing the Au-core in 3d transition metal-oxide nanoparticles.
The Au@CoFeO_x nanoparticles exhibited the highest activity, with an overpotential of 328 ± 3 mV over a 2-hour stability test at 10 mA cm^-2.

Conclusions:

Strategically coupling Au support and mixed metal-oxide effects in a core-shell nanoparticle morphology is a promising strategy for high-performance OER catalysts.
These findings offer a pathway towards developing device-ready catalysts for efficient renewable energy applications.