Tuning the Adsorption of H and OH on Ruthenium Aerogel to Boost the Alkaline Hydrogen Evolution

aerogel effectively weaken the strong adsorption of H at Ru sites. Additionally, with their high affinity for OH species, Cr ions facilitate the removal of OH from adjacent Ru sites. Furthermore, Cr ion incorporation modifies the local electronic structure of Ru, further reducing its OH adsorption energy. This work highlights a synergistic approach to improving catalytic performance and offers a novel strategy for designing highly efficient and durable alkaline HER catalysts.