▎ 摘　　要

NOVELTY - Electrochemical preparation of single-atom materials comprises (1) using carbon materials, MXenes materials, carbonitrides, and nitrided nickel-cobalt graphene composite materials as carrier material, attaching carrier material to substrate, and drying to obtain working electrode, (2) preparing electrolytic cell, where the electrolytic cell includes an electrolytic cell and a three-electrode system, the three-electrode system includes a counter electrode, a working electrode, and a reference electrode, the counter electrode is a metal electrode, and the reference electrode is a non-aqueous-silver electrode, (3) using ionic liquid as electrolyte solution, taking ionic liquid and adding to electrolytic cell, and placing in temperature-controlled magnetic stirring electric heating device, and using electrochemical method to carry out single-atom anchoring, and (4) taking out monoatomic material from electrolytic cell, washing with deionized water, washing with absolute ethanol and drying. USE - The method is useful for electrochemical preparation of single-atom materials, which is used in the fields of energy conversion and energy storage.