Self-supporting nitrogen-doped carbon-coated Fe-Ni2P/Ni5P4 electrocatalyst, synthetic method and application

The invention discloses a self-supporting nitrogen-doped carbon-coated Fe-Ni2P/Ni5P4 electrocatalyst, a synthesis method and application, ferric nitrate nonahydrate, nickel acetate, 2, 6-naphthalenedicarboxylic acid and 1, 2-benzisothiazole-3-ketone are uniformly dissolved in a reaction kettle filled with foamed nickel for heating reaction for a period of time, after the reaction is finished, the foamed nickel is taken out and cleaned, and the self-supporting nitrogen-doped carbon-coated Fe-Ni2P/Ni5P4 electrocatalyst is obtained. Drying is carried out, such that a NiFe-MOF precursor with a nanosheet array structure is obtained; the synthesized NiFe-MOF precursor is subjected to calcination and phosphorization in a vacuum environment, and the self-supporting nitrogen-doped carbon-coated Fe-Ni2P/Ni5P4-coated N-C electrocatalyst can be obtained by selecting and setting a proper heating rate, a proper calcination temperature and a proper calcination time. Compared with Ni2P/Ni5P4 (at) N-C and pure foamed nickel,