“…In order to realize the sustainable development of industrialization, in recent years, many non-noble metal-based electrocatalysts with high efficiency, environmental protection, lowbudget and abundant reserves have been applied to electrocatalytic water cracking, one of which involves improving the OER activity. Monumental efforts have been made to design and prepare diversiform transition metals and their derivatives, such as transition metal-based oxides, 7 carbides, 8 nitrides, 9 phosphides, 10 sulfides, 11 selenides, 12 borides 13 and other electrocatalysts 14 for the OER.…”