Amorphous Cobalt-Iron Oxide (CoFeOx) as Electrocatalysts for Alkaline Electrolyzer, 1 g/bottle, CAEEACoFeO

Cobalt-Iron Oxide (CoFeOx) is a highly effective bimetallic electrocatalyst, specifically optimized for alkaline environments. While similar to NiFeOx, the cobalt-based system is often favored for its superior electrical conductivity and its ability to act as a bifunctional catalyst for both oxygen evolution and reduction.

CoFeOx is a top-tier candidate for the anode in Anion Exchange Membrane (AEM) electrolyzers. It is primarily used to overcome the sluggish kinetics of the 4-electron water-splitting process. (1) Synergistic Active Sites: In CoFeOx, the Iron (Fe) acts as a dopant that modulates the electronic structure of Cobalt (Co). This synergy lowers the energy barrier for the formation of O-O bonds, which is typically the slowest step in the reaction. (2) Amorphous Advantage: Amorphous CoFeOx(OH)y (oxyhydroxides) often outperform crystalline versions because their disordered structure provides a higher density of "defects" and under-coordinated metal sites that are more chemically reactive. (3) Performance: High-performance CoFeOx catalysts can achieve an overpotential as low as 240–290 mV at 10 mA/cm2 with a small Tafel slope (typically 35–50 mV/dec), rivaling noble metals like IrO2.

Notes: Please try to store the amorphous CoFeOx powder in a dry place.

References: 

1. J. Zhang, et al. Role of cobalt–iron (oxy)hydroxide (CoFeOx) as oxygen evolution catalyst on hematite photoanodes, Energy Environ. Sci., 2018,11, 2972-2984.
2. L. Gao, et al. CoFeOx(OH)y/CoOx(OH)y core/shell structure with amorphous interface as an advanced catalyst for electrocatalytic water splitting, Electrochemistry Communications, 2020, 341, 136038.