Mixed-Metal Nickel–Iron Oxide Aerogels for Oxygen Evolution Reaction

Alkaline electrolyte membrane electrolyzers are a promising technology to efficiently produce clean hydrogen without the use of critical raw materials. At heart these electrocatalysts, which facilitate cathodic and anodic reactions, with latter oxygen evolution reaction (OER) being most sluggish. In recent years, aerogels have become very well-studied class materials due their unique properties, including high surface area. Until now, not been used catalyze OER by themselves but were mainly considered catalyst supports. Here, mixed-metal nickel–iron oxide synthesized modified epoxide route synthesis tested as catalysts. Depending on Ni/Fe ratio, they show catalytic activity low overpotential reach 10 mA cm–2 (at ? = 380 mV). This is beyond that existing state-of-the-art platinum group metal-free