▎ 摘　　要

NOVELTY - Performing electroless nickel plating on the surface of graphene involves removing the oil stains on the surface of graphene, and then putting into an hydrogen fluoride (HF) solution with a mass fraction of 10-30 wt.% for ultrasonic treatment for 20-40 minutes, and then washing and drying to obtain acid-treated graphene. The non-powder-like metal medium is immersed with electrode potential lower than nickel in the mineral acid solution, and started timing when continuous bubbles are generated on the metal medium surface. The reaction is continued for not less than 3 minutes, then washed and dried to obtain the acid-treated metal medium. The acid-treated graphene uniformly dispersed in the electroless plating solution, and immersed the acid-treated metal medium in the electroless plating solution. The reducing agent is added again, and then reacted for at least 90 minutes under the combined action of ultrasound and mechanical stirring, removed the unreacted metal medium. USE - Method for performing electroless nickel plating on the surface of graphene. ADVANTAGE - The method enables to perform electroless nickel plating on the surface of graphene in a simple way, low in cost, the prepared nickel plating layer is uniform and dense, with high coverage and high repeatability, and can be mass-produced while ensuring high-quality plating layer. DETAILED DESCRIPTION - Performing electroless nickel plating on the surface of graphene involves removing the oil stains on the surface of graphene, and then puting into an hydrogen fluoride (HF) solution with a mass fraction of 10-30 wt.% for ultrasonic treatment for 20-40 minutes, and then washing and drying to obtain acid-treated graphene. The non-powder-like metal medium is immersed with electrode potential lower than nickel in the mineral acid solution, and started timing when continuous bubbles are generated on the metal medium surface. The reaction is continued for not less than 3 minutes, then washed and dried to obtain the acid-treated metal medium. The acid-treated graphene uniformly dispersed in the electroless plating solution, and immersed the acid-treated metal medium in the electroless plating solution. The reducing agent is added again, and then reacted for at least 90 minutes under the combined action of ultrasound and mechanical stirring, removed the unreacted metal medium and collect the solid powder, and then washed and dried the solid powder to obtain nickel-plated graphene. The chemical plating solution is a solution with a pH of 10-13 made up of soluble nickel salt, citrate, pH adjuster and deionized water. The concentration of nickel ion (Ni2+) in the electroless plating solution is 0.04-0.07 mol/L, the concentration of citrate in the electroless plating solution is 0.02-0.05 mol/L, and the pH adjusting agent is sodium hydroxide (NaOH), potassium hydroxide (KOH) or ammonia. The reducing agent is hydrazine hydrate, sodium hypophosphite or sodium borohydride. The ultrasonic power is 80-120 watt, and the stirring rate is 150-200 revolutions/minute.