Front Cover: Iron and Nickel Substituted Perovskite Cobaltites for Sustainable Oxygen Evolving Anodes in Alkaline Environment (ChemSusChem 6/2025)

The Front Cover depicts the substitution of cobalt atoms in the lattice of a perovskite oxide catalyst with more benign elements, such as iron and nickel, to produce more sustainable and more efficient catalysts for the oxygen evolution reaction (OER). In their Research Article, A. Chatzitakis and co-workers show that a substitution of cobalt of between 30 and 70 % by iron alone drastically improves the intrinsic catalytic activity for the OER, while in-situ Raman spectroscopy indicates that the OER proceeds through the lattice oxygen mechanism.