Atomic-Level Hydrogen Pumping Enables Near-Unity Faradaic Efficiency in Nitrate-to-Ammonia Electroreduction.
Electrochemical nitrate reduction (NO3RR) offers a sustainable route for ammonia synthesis and wastewater remediation, yet its efficiency is often constrained by the spatial mismatch between hydrogen (H) generation and consumption, leading to H accumulation, parasitic H2 evolution, and intermediate poisoning. Here we r...