Optimizing bimetallic NiRu@Ti3C2Tx catalysts for oxygen evolution: The Impact of MXene content on Ru stability

In this study, a bimetallic NiRu compound, synthesized by combining Ru with Ni and integrated it onto Ti3C2Tx MXene surfaces at varying MXene contents (1 %–25 %) using a facile hydrothermal method were investigated for the Oxygen Evolution Reaction (OER). The NiRu@Ti3C2Tx composites were evaluated i...

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Bibliographic Details
Published in:Electrochimica acta 2025-02, Vol.513, Article 145529
Main Authors: Buldu-Akturk, Merve, Schultz, Thorsten, Sharma, Namrata, Michalczik, Ursula, Bogdanoff, Peter, Koch, Norbert, Browne, Michelle P.
Format: Article
Language:English
Subjects:
MXene
NiRu
Oxygen evolution reaction
Ruthenium leaching
Ti3C2Tx
Online Access:Get full text
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Summary:In this study, a bimetallic NiRu compound, synthesized by combining Ru with Ni and integrated it onto Ti3C2Tx MXene surfaces at varying MXene contents (1 %–25 %) using a facile hydrothermal method were investigated for the Oxygen Evolution Reaction (OER). The NiRu@Ti3C2Tx composites were evaluated in 1 M KOH electrolyte to assess how different MXene concentrations affect Ru stability and overall OER activity. Various characterization techniques were employed to analyze the morphological and microstructural properties of the synthesized pure and composite materials in order to elucidate the reasoning for the effect of the MXene on the Ru chemical stability and on the subsequent OER activity. We report that the incorporation of the bimetallic NiRu compound onto Ti3C2Tx MXene surfaces at varying MXene contents significantly hindered the Ru leaching by maintaining the Ru oxidation state during oxygen evolution. The synthesized NiRu@MXene electrocatalysts demonstrated that MXenes can be utilized to stabilize the NiRu structure leading to less leaching of ionic and solid Ru species during the OER, while also delivering excellent OER activity. [Display omitted]
ISSN:0013-4686
DOI:10.1016/j.electacta.2024.145529