Cover Feature: Porous Organic Polymers as Ionomers for High‐Performance Alkaline Membrane Water Electrolysis (ChemSusChem 3/2025)

The Cover Feature illustrates an anion-exchange membrane water electrolyzer (AEMWE) containing porous organic polymers (POPs) as particle-based ionomers. AEMWEs are fundamental to the sustainable production of green hydrogen from electricity generated by renewable sources because they use water as the sole feedstock. We present here a new class of low-cost particulate ionomers based on piperidone-derived POPs, which exhibit outstanding electrochemical properties, remarkable alkaline stability, and durability of over 500 hours at a current density of 0.5 A cm−2. More information can be found in the Research Article by A. E. Lozano, Y. M. Lee and co-workers.