“…Therefore, the development of largescale, low energy consumption, and high-stability nonprecious metals for water-splitting, especially those suitable for industrial applications, is a great challenge. 11,12 In recent years, numerous electrocatalysts based on non-noble metals, such as transition metal phosphide (TMP), 13 transition metal boride (TMB), 14,15 transition metal sulde (TMS), 16 and transition metal nitride (TMN), 17,18 have been extensively studied. Due to their high intrinsic catalytic activity, exible structure, and composition, transition metal nitrides have emerged as potential electrocatalysts with excellent catalytic performance and are superior to Pt and RuO 2 .…”