articleAdvanced MaterialsJan 8, 2025Closed access

Interfacial Water Regulation for Nitrate Electroreduction to Ammonia at Ultralow Overpotentials

YWYuchi WanMPMaojun PeiYTYixiang TangYLYao LiuWYWei Yan

Fuzhou University · State Key Laboratory of New Ceramics and Fine Processing · +1 more institution

PubMed
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Abstract

Abstract Nitrate electroreduction is promising for achieving effluent waste‐water treatment and ammonia production with respect to the global nitrogen balance. However, due to the impeded hydrogenation process, high overpotentials need to be surmounted during nitrate electroreduction, causing intensive energy consumption. Herein, a hydroxide regulation strategy is developed to optimize the interfacial H 2 O behavior for accelerating the hydrogenation conversion of nitrate to ammonia at ultralow overpotentials. The well‐designed Ru─Ni(OH) 2 electrocatalyst shows a remarkable energy efficiency of 44.6% at +0.1 V versus RHE and a nearly 100% Faradaic efficiency for NH 3 synthesis at 0 V versus RHE. In situ…

Citation impact

154
total citations
FWCI
45.27
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100%
References
48
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Authors

7

Topics & keywords

Topics
Keywords
  • Electrocatalyst
  • Nitrate
  • Materials science
  • Ammonia
  • Faraday efficiency
  • Ammonia production
  • Inorganic chemistry
  • Chemical engineering
UN Sustainable Development Goals
  • Affordable and clean energy
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