| Autor: |
Tabassum, Anila, Ata, Sadia, Ding, Yulong, Mohsin, Ijaz Ul, Leghari, Sajjad Ahmed Khan, Al‐Kahtani, Abdullah A., Nafady, Ayman, Sohail, Manzar |
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| Zdroj: |
ChemistrySelect; 10/18/2024, Vol. 9 Issue 39, p1-9, 9p |
| Abstrakt: |
Water oxidation, a crucial step in electrochemical water splitting, is often hindered by its complex kinetics. In our pursuit of designing efficient electrocatalysts, we have found that morphological modifications during synthesis are powerful tools. By manipulating various parameters, such as reaction time and temperature, we have tuned the morphology of the catalysts, leading to a significant enhancement in the oxygen evolution reaction (OER) rate. Our thorough research involves using a simple hydrothermal method for synthesizing bimetallic Ni–Cu oxides, resulting in the emergence of different morphologies by varying reaction times from 4 to 24 h. The OER performance in an alkaline medium, using a 1 M KOH solution, has been meticulously investigated, and our results have unveiled the highest activity for Ni–Cu fabricated with a growth time of 24 h. Ni–Cu oxide 24 exhibits a remarkably low onset potential for OER at 222 mV with a Tafel slope of 373 mV/dec. The catalyst boasts the lowest Rct value of 2.788 ohm, ensuring faster charge transfer rates and stability up to 1000 cyclic voltammetry (CV) cycles, thereby supporting its electrochemical applications for water splitting. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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