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April 11, 2026Results in Surfaces and InterfacesOpen Access

Anodic Oxidation of Nickel in Sub-Molten and Molten KOH: The effect of the KOH melt temperature on the structure and morphology of anodic oxidation products

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Authors

GEGökçe EvrenMÜMustafa ÜrgenKKKursat Kazmanli

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Overview

Investigates how electrolyte temperature affects nickel oxidation products, suggesting implications for energy storage applications.

Key Points

  • This research aims to understand how varying temperatures in potassium hydroxide (KOH) melts influence nickel anodic oxidation products.
  • Characterization of oxidation products using field-emission scanning electron microscopy (FE-SEM), x-ray diffraction (XRD), and Raman spectroscopy.
  • Anodic oxidation of nickel plates at specific temperatures: 250°C, 300°C, 350°C, and 400°C.
  • Comparison of electrochemical responses for different morphologies produced.
  • Anodic oxidation in sub-molten KOH at 250°C formed nanosheets and nanoflakes, whereas molten KOH produced octahedral-like NiO.
  • Significant changes in morphology and phases were observed with increasing temperature.
  • Nanosheets showed superior electrochemical activity with a low overpotential of 349 mV to reach 10 mA/cm².

Cite This Study

Evren et al. (2026) studied this question.

synapsesocial.com/papers/69d9e4d578050d08c1b752f5https://doi.org/10.1016/j.rsurfi.2026.100800
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