Understanding the Metal‐Center Mediated Adsorption and Redox Mechanisms in a FeMn(NbTa)2O6 Columbite Material for Anion Exchange Membrane Water Electrolyzers (Adv. Energy Mater. 24/2025)
Advanced Energy Materials, Volume 15, Issue 24, June 24, 2025.
Anion Exchange Membrane Water Electrolyzers
In article number 2404479, Nelson Y. Dzade, Deok-Yong Cho, Chan Hee Park, and co-workers introduced FeMn(NbTa)2O6 columbite as a novel, high-performance electrocatalyst for anion exchange membrane water electrolyzers. In-situ XAS and DFT analyses reveal that Fe/Mn sites exhibit higher oxygen evolution reaction activity due to reduced overpotentials and favorable O* to *OOH energetics. The Nb/Ta sites within the AB2O6 framework facilitate charge transfer, lower activation barriers, and enhance stability. FeMn(NbTa)2O6 columbite demonstrates remarkable durability and efficiency, matching the performance of Pt/C-RuO2 catalysts, offering a promising alternative for sustainable hydrogen production.
