期刊
CHEMICAL COMMUNICATIONS
卷 57, 期 63, 页码 7806-7809出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cc03139b
关键词
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资金
- Key Research Program from Science and Technology Department of Sichuan Province [20ZDYF2773]
- National Natural Science Foundation of China [22072015]
- Shanghai Scientific and Technological Innovation Project [18JC 1410604]
The study proposes a new method for environmentally friendly NH3 synthesis in aqueous media and investigates a highly efficient NRR electrocatalyst. The catalyst shows high NH3 yield and faradaic efficiency, as well as excellent selectivity and durability for NH3 formation.
Ambient electrochemical N-2 reduction offers a promising alternative to the energy-intensive Haber-Bosch process towards renewable NH3 synthesis in aqueous media but needs efficient electrocatalysts to enable the N-2 reduction reaction (NRR). Herein, we propose that an amorphous WC thin film magnetron sputtered onto a graphite foil behaves as a superb NRR electrocatalyst for ambient NH3 production with excellent selectivity. In 0.5 M LiClO4, it attains a large NH3 yield of 43.37 mu g h(-1) mg(cat)(-1). and a high faradaic efficiency of 21.65% at -0.10 V vs. reversible hydrogen electrode. Impressively, this catalyst also shows excellent selectivity and strong durability for NH3 formation.
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