Maximizing Available Active Hydrogen on FeNi Substitutional Solid-Solution Alloy to Boost Electrosynthesis of Ammonia from Nitrate

Electrochemical nitrate reduction reaction (NO3RR) stands out as a promising route for sustainable ammonia synthesis, in which active hydrogen (*H) plays a crucial role in both the deoxygenation and hydrogenation steps. However, the regulation of surface *H is still overlooked, and without intervention, the competing hydrogen evolution reaction is kinetically more favored over the NO3RR, leaving the current system as far from satisfactory. Herein, based on reverse utilization of the Sabatier principle, a series of FexNiy substitutional solid-solution alloys (SSAs) are synthesized to manipulate *H behavior for enhanced NO3RR. Upon precise optimization of the alloy composition, the d-band center of HER-active Ni…

• NN
  National Natural Science Foundation of China

  Award: 52401284
• CI
  Collaborative Innovation Center of Suzhou Nano Science and Technology
• NS
  Natural Science Foundation of Jiangsu Province for Distinguished Young Scholars

  Award: BK20220061