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Updated: Jun 26, 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

Interfacial engineering layered bimetallic oxyhydroxides for efficient oxygen evolution reaction.

Xiaolin Zhang¹, Huanjun Xu¹, Qiang Shi²

¹College of Science, Laboratory of Child Cognition & Behavior Development of Hainan Province, Qiongtai Normal University, Haikou 571127, China.

Journal of Colloid and Interface Science

|May 18, 2024

Summary

Direct synthesis of cobalt oxyhydroxides (CoOOH) for oxygen evolution reaction (OER) catalysis is achieved via iron oxyhydroxide (FeOOH) interfaces. This Fe-doped CoOOH catalyst shows enhanced OER activity, enabling efficient energy conversion.

Keywords:

Fe(0.35)Co(0.65)OOH FeOOH interface Oxygen evolution reaction Oxyhydroxides

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Area of Science:

Materials Science
Electrochemistry
Catalysis

Background:

Transition metal oxyhydroxides (MOOH) are key catalysts for the Oxygen Evolution Reaction (OER).
Direct synthesis of MOOH is challenging due to the instability of high-oxidation-state metal salts.
Previous theoretical studies suggested Co(OH)2 formation over CoOOH on carbon supports.

Purpose of the Study:

To develop a direct synthesis strategy for MOOH catalysts.
To investigate the role of FeOOH interfaces in CoOOH synthesis and OER performance.
To explore the catalytic activity of Fe-doped CoOOH for OER.

Main Methods:

Theoretical computations (DFT) to predict binding energies.
Controlled epitaxial growth using a hydrothermal method.
In-situ doping of iron into cobalt oxyhydroxide.

Main Results:

FeOOH interfaces promote the direct synthesis of CoOOH on carbon structures.
Fe-doped Co0.65Co0.35OOH exhibits excellent OER performance (240 mV overpotential at 10 mA cm-2, 43 mV dec-1 Tafel slope).
DFT calculations confirm enhanced adsorption of oxygen species on Fe-doped CoOOH, boosting OER activity.

Conclusions:

A novel method for efficient preparation of layered cobalt oxyhydroxides is presented.
Fe-doping significantly enhances OER activity through improved electronic structure and adsorption properties.
This approach offers a promising strategy for advanced energy conversion and storage materials.