▎ 摘　　要

A novel superhydrophobic nickel-reduced graphene oxide (sNi-rGO) coating is fabricated successfully on an N80 steel substrate using a simple electrodeposition method combined with a directly elevated current approach. The results show that the water contact angle (WCA) of the coating is 162.87 degrees when the concentration of graphene oxide (GO) is 0.6 g L-1. The autoclave experiments indicate that the coatings still maintain superhydrophobic and corrosion resistance under high-temperature and high-pressure CO2 condition. The density functional theory calculations are employed to investigate the adsorption models of carbonate (CO32-) on the surfaces of iron (Fe), nickel (Ni), and rGO to further verify the CO2 corrosion resistance mechanism of the sNi-rGO coating.