Achieving a Record‐High Yield Rate of 120.9 for N₂ Electrochemical Reduction over Ru Single‐Atom Catalysts

Abstract The electrochemical reduction of N₂ into NH₃ production under ambient conditions represents an attractive prospect for the fixation of N₂. However, this process suffers from low yield rate of NH₃ over reported electrocatalysts. In this work, a record‐high activity for N₂ electrochemical reduction over Ru single atoms distributed on nitrogen‐doped carbon (Ru SAs/N‐C) is reported. At −0.2 V versus reversible hydrogen electrode, Ru SAs/N‐C achieves a Faradaic efficiency of 29.6% for NH₃ production with partial current density of −0.13 mA cm⁻². Notably, the yield rate of Ru SAs/N‐C reaches 120.9 , which is one order of magnitude higher than the highest value ever reported. This work not only develops a superior electrocatalyst for NH₃ production, but also provides a guideline for the rational design of highly active and robust single‐atom catalysts.