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Updated: Jun 1, 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

Triangular trinuclear metal-N4 complexes with high electrocatalytic activity for oxygen reduction.

Ruili Liu¹, Christian von Malotki, Lena Arnold

¹Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany.

Journal of the American Chemical Society

|June 16, 2011

Summary

New triangular macrocyclic metal complexes, including cobalt and iron, show high activity for oxygen reduction reactions. These nonprecious metal catalysts offer a promising alternative to platinum for fuel cells.

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Last Updated: Jun 1, 2026

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

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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:

Electrochemistry
Materials Science
Catalysis

Background:

The oxygen reduction reaction (ORR) is crucial for fuel cell performance.
Developing efficient and stable nonprecious metal catalysts (NPMCs) is a key challenge.
Existing catalysts often face limitations in activity, stability, or cost.

Purpose of the Study:

To design and synthesize a novel class of macrocyclic metal-N(4) complexes.
To investigate their structural properties and catalytic activity for the ORR.
To evaluate their potential as NPMCs for fuel cell applications.

Main Methods:

Synthesis of triangular macrocyclic metal-N(4) complexes ([MN(4)](n), M = Co, Fe).
Structural characterization of the synthesized complexes.
Electrochemical evaluation of catalytic activity and stability for the ORR in alkaline media.

Main Results:

A unique triangular trinuclear structure with a high density of active sites was achieved.
The [CoN(4)](3)/C catalyst demonstrated high catalytic activity for the ORR.
The cobalt-based catalyst exhibited superior long-time stability compared to commercial Pt/C.
The reaction proceeds via a favorable four-electron pathway.

Conclusions:

Structurally well-defined macrocyclic metal complexes offer a promising platform for NPMCs.
The developed [CoN(4)](3)/C catalyst shows excellent performance for the ORR.
These findings pave the way for a new generation of efficient and cost-effective fuel cell catalysts.