Co ₃ O ₄ /CoMoO ₄ nanocages with an ultrafine crystallite size and high surface area derived from hollow H ₃ PMo ₁₂ O ₄₀ @ZIF-67 hybrids exhibit high-performance for electrocatalytic oxygen evolution.

The insufficient availability and activity of interfacial water remain a major challenge for alkaline hydrogen evolution reaction (HER). Here, we propose an “on-site disruption and near-site compensation” strategy to reform the interfacial water hydrogen bonding network via deliberate cation penetration and catalyst support engineering. This concept is validated using tip-like bimetallic RuNi nanoalloys planted on super-hydrophilic and high-curvature carbon nanocages (RuNi/NC). Theoretical simulations suggest that tip-induced localized concentration of hydrated K⁺ facilitates optimization of interfacial water dynamics and intermediate adsorption. In situ synchrotron X-ray spectroscopy endorses an H* spillover-bridged Volmer‒Tafel mechanism synergistically relayed between Ru and Ni. Consequently, RuNi/NC exhibits low overpotential of 12 mV and high durability of 1600 h at 10 mA cm^‒2 for alkaline HER, and demonstrates high performance in both water electrolysis and chlor-alkali electrolysis. This strategy offers a microscopic perspective on catalyst design for manipulation of the local interfacial water structure toward enhanced HER kinetics.

Single atom Ag-decorated Cu ₂ O nanowires achieve two-ampere-level nitrate-to-ammonia conversion, facilitating further ammonia fixation into ammonium formate at 10 g-scale.