Gradient-concentration RuCo electrocatalyst for efficient and stable electroreduction of nitrate into ammonia

Electrocatalytic nitrate reduction to ammonia holds great promise for developing green technologies for electrochemical ammonia energy conversion and storage. Considering that real nitrate resources often exhibit low concentrations, it is challenging to achieve high activity in low-concentration nitrate solutions due to the competing reaction of the hydrogen evolution reaction, let alone considering the catalyst lifetime. Herein, we present a high nitrate reduction performance electrocatalyst based on a Co nanosheet structure with a gradient dispersion of Ru, which yields a high NH3 Faraday efficiency of over 93% at an industrially relevant NH3 current density of 1.0 A/cm2 in 2000 ppm NO3- electrolyte, while…

• SS
  Salt Science Research Foundation

  Award: BL14W1
• NN
  National Natural Science Foundation of China

  Award: 52103300
• FU
  Fudan University
• HI
  Harbin Institute of Technology

  Award: 2022TS36
• SU
  Soochow University
• SU
  Southern University of Science and Technology
• BA
  Basic and Applied Basic Research Foundation of Guangdong Province

  Awards: 2023A1515011332, 2023A1515010572