▎ 摘　　要

NOVELTY - The method involves preparing precursor salt containing platinum, cobalt, nickel, iron and copper into a solution, ultrasonically stirring until completely dissolved to obtain a platinum-cobalt-nickel-iron-copper precursor salt solution, and immersing the freeze-dried cake-shaped graphene oxide in the platinum-cobalt-nickel-iron-copper precursor salt solution, taking out and drying the soaked cake-shaped graphene oxide to obtain graphene oxide wrapped in precursor salt, and performing hydrogen calcination and reduction to obtain graphene-loaded platinum-cobalt-nickel-iron-copper high-entropy alloy nanoparticles. USE - Method for preparing graphene-loaded platinum cobalt-nickel-iron-copper high-entropy alloy nanoparticle in fields of electronics, catalysis and biology. ADVANTAGE - The method soaks the cake-shaped graphene oxide in the precursor salt solution and then dries to ensure the uniform distribution of elements in the precursor salt on the surface of the cake-shaped graphene oxide, prevents element segregation, controls the phase composition of platinum-cobalt-nickel-iron-copper high-entropy alloy nanoparticles, and has high specific surface area, many active sites and good stability, and potential application in the fields of catalytic materials, superconducting materials, sensing materials and biological materials. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating the method for preparing graphene-loaded platinum cobalt-nickel-iron-copper high-entropy alloy nanoparticle (Drawing includes non-English language text).