“…Decreasing particle size, alloying with other metals, optimizing the morphology, and introducing metal oxides have proved helpful in solving the above issues [3,6–8] . Transition‐metal phosphides exhibit high electrochemical activities in water splitting, fuel cells, batteries and supercapacitors, due to the advantages of high conductivity, unique electronic structure and earth‐abundance reserves [9–11] . Especially, the P (phosphorus) atoms play a key role in catalysis, which can draw electrons from metal atoms and hence regulating the electronic properties of transition‐metal.…”