Related Experiment Video
Updated: Jun 24, 2025

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
Published on: October 27, 2018
Potassium fluoride-induced FeOOH formation in NiFe oxalate for improved oxygen evolution performance
Seungjoon Ha1, Youngji Kim1, Taeyeop Kim1
1Department of Chemical Engineering, Changwon National University, 51140 Changwon, Republic of Korea. seunghwa@changwon.ac.kr.
Abstract:
Our study introduces a facile synthetic route for the in situ formation of nickel (Ni)-iron (Fe) oxyhydroxide from NiFe oxalate. By adding potassium fluoride (KF) to the synthetic solution, we achieved a predominant surface distribution of Fe (>80 at%) while limiting its bulk incorporation compared to solutions without KF. Operando Raman spectroscopy analysis confirms that the enriched Fe predominantly exists as FeOOH. Our optimized catalyst demonstrates significant efficiency, achieving a current density of 10 mA cm-2 at a notably low overpotential of 226 mV.
Related Concept Videos
Alkali Metals
Table 1: Properties of the alkali metals
Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate

