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Description

In this study, NiRu layered double hydroxide (LDH) was synthesized using the Precipitation method for oxygen evolution reaction (OER). The synthesis was carried out at a constant temperature of 80°C, while the reaction time was varied (2 hours, 3 hours, and 4 hours) to investigate its effect on the catalyst's morphology and electrochemical performance. Scanning electron microscopy (SEM) analysis confirmed a well-defined morphology, with improvements observed as the reaction time increased. Electrochemical evaluation revealed that the over potential values for the samples synthesized at 2, 3, and 4 hours were 294 mV, 144 mV, and 144 mV, respectively. Compared to previously reported Ni-based LDH catalysts, the NiRu-LDH synthesized in this study exhibits superior performance, with a significantly lower overpotential and higher current density, making it a strong candidate for practical OER applications. Additionally, the current density of the catalyst exhibited an increasing trend with longer reaction times, indicating enhanced catalytic activity. Characterization techniques conducted in this study , including X-ray diffraction (XRD),Fourier-transform infrared spectroscopy (FTIR), cyclic voltammetry (CV), linear sweep voltammetry (LSV), and SEM and the findings highlight the impact of reaction time on the performance of NiRu LDH and its potential as an efficient catalyst for OER applications.

Publication Date

4-1-2025

Keywords

NiRu Layered Double Hydroxide, Oxygen Evolution Reaction (OER)

Improving OER Performance of NiRu Layered Double Hydroxide: Including Influence of Reaction Time on Morphology and Electrochemical Activity

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