Boosting Hydrogen Evolution Reaction on Co9S8 in Neutral Media Leveraging Oxophilic CrOx Mosaic Dopant (Adv. Energy Mater. 6/2025)

Hydrogen Evolution Reaction

In article number 2305035, Jin Young Kim, Mu-Hyun Baik, Kwangyeol Lee, and co-workers present a CrO_x-doped Co₉S₈/CuCrS₂ mosaic hetero-nanocatalyst for hydrogen evolution reaction in neutral conditions. The CrO_x dopants enhance water adsorption/dissociation and facilitate electron transfer to Co sites, optimizing hydrogen generation. The innovative design integrates oxophilic and HER-active domains, demonstrating exceptional performance and stability, paving the way for advanced catalysts in sustainable hydrogen production.