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Especially, Cu\u2010based catalysts (Cu<jats:sup>0<\/jats:sup> and Cu<jats:sup>+<\/jats:sup>) have been investigated in the field of NO<jats:sub>3<\/jats:sub>RR due to the energy levels of <jats:italic>d<\/jats:italic>\u2010orbital and the least unoccupied molecular orbital (LUMO) <jats:italic>\u03c0<\/jats:italic>* of nitrate's orbital. Based on the above, we synthesized a Cu\u2010based compound containing Cu<jats:sub>3<\/jats:sub>N (Cu<jats:sup>+<\/jats:sup>) through a simple one\u2010step pyrolysis method, applied it to electrocatalytic NO<jats:sub>3<\/jats:sub>RR, and tested the performance of the Zn\u2010NO<jats:sub>3<\/jats:sub><jats:sup>\u2212<\/jats:sup> battery. Through various characterization analyses, Cu\u2010based catalysts (Cu<jats:sup>+<\/jats:sup>) are the key active sites in reduction reactions, making Cu<jats:sub>3<\/jats:sub>N a potential catalyst for ammonia synthesis. The research results indicate the application of Cu<jats:sub>3<\/jats:sub>N catalyst in NO<jats:sub>3<\/jats:sub>RR shows the best NH<jats:sub>3<\/jats:sub> yield of 173.7\u2005\u03bcmol\u2009h<jats:sup>\u22121<\/jats:sup>\u2009cm<jats:sup>\u22122<\/jats:sup> with FE<jats:sub>NH3<\/jats:sub> reaching 91.0\u2009% at \u22120.3\u2005V <jats:italic>vs<\/jats:italic>. RHE, which is much higher than that of Cu catalyst without N. In addition, the Zn\u2010NO<jats:sub>3<\/jats:sub><jats:sup>\u2212<\/jats:sup> battery based on Cu<jats:sub>3<\/jats:sub>N electrode also exhibits an NH<jats:sub>3<\/jats:sub> yield of 39.8\u2005\u03bcmol\u2009h<jats:sup>\u22121<\/jats:sup>\u2009cm<jats:sup>\u22122<\/jats:sup> 63.0\u2009% FE<jats:sub>NH3<\/jats:sub>, and a power density of 2.7\u2005mW\u2009cm<jats:sup>\u22122<\/jats:sup> as well as stable cycling charge\u2010discharge stability for 5\u2005hours. This work guides the application of Cu<jats:sub>3<\/jats:sub>N enhanced regulation of the active site in the electrocatalytic synthesis of NH<jats:sub>3<\/jats:sub> from NO<jats:sub>3<\/jats:sub>RR.<\/jats:p>","DOI":"10.1002\/chem.202404129","type":"journal-article","created":{"date-parts":[[2024,11,19]],"date-time":"2024-11-19T05:33:26Z","timestamp":1731994406000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["In\u2010situ Reduced Cu<sub>3<\/sub>N Nanocrystals Enable High\u2010Efficiency Ammonia Synthesis and Zinc\u2010nitrate Batteries"],"prefix":"10.1002","volume":"31","author":[{"given":"Shanshan","family":"Chen","sequence":"first","affiliation":[{"name":"School of Resources, Environment and Materials Guangxi University  Nanning 530004 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiwei","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Resources, Environment 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