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Chemical Communications

Ni4N Interspersed Ru for Enhanced Hydrogen Oxidation Reaction in Alkaline Medium

Anagha Usha Vijayakumar,   Manoj Shanmugasundaram,   Vineesh Thazhe Veetil  and  David Zitoun  

Abstract

We report a novel Pt-free Ru-Ni4N/C heterostructured catalyst, prepared by selective Ni nitridation during RuNi alloy annealing in NH3. It outperforms Pt/C, RuNi alloy and Ru/C in alkaline hydrogen oxidation reaction (HOR), with specific activity of 0.4 mA cm -2 at 0.1 V vs. RHE twice above Ru/C, due to optimized H binding energy and enhanced water adsorption via Ni alloying and heterostructure formation.

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DOI
https://doi.org/10.1039/D6CC01926A
Article type
Communication
Submitted
30 Mar 2026
Accepted
21 Apr 2026
First published
21 Apr 2026
This article is Open Access
Creative Commons BY-NC license

Chem. Commun., 2026, Accepted Manuscript

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Ni4N Interspersed Ru for Enhanced Hydrogen Oxidation Reaction in Alkaline Medium

A. Usha Vijayakumar, M. Shanmugasundaram, V. Thazhe Veetil and D. Zitoun, Chem. Commun., 2026, Accepted Manuscript , DOI: 10.1039/D6CC01926A

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