High-efficiency electrohydrogenation of nitric oxide to ammonia on a Ni₂P nanoarray under ambient conditions

A Ni 2 P nanoarray on carbon paper enables NH 3 synthesis via NO reduction (NH 3 yield: 33.47 μmol h −1 cm −2 ; faradaic efficiency: 76.9%). Ni 2 P-based Zn–NO battery shows a power density of 1.53 mW cm −2 with an NH 3 yield of 62.05 μg h −1 mg cat. −1 .