▎ 摘　　要

NOVELTY - The system comprises a graphene layer formed on a metallic layer, where the metallic layer including a first metal and a second metal that are dipped in a metal solution. The graphene layer is formed by chemical vapor deposition technique and occupies greater than 1 mm2 area. The reducing power of the first metal is greater than the second metal. The number of layers in the graphene layer is 100. The graphene layer includes a cathode, an anode and a metal ion electrolyte. The first metal and the second metal are dipped in seawater. USE - The system is useful for preventing corrosion of metals such as lithium, potassium, sodium, magnesium, chrome, antimony, zinc, copper, lead, platinum, mercury, silver, iron and their alloys (all claimed). ADVANTAGE - The graphene layer formed on the metallic layer does not allow the highly corrosive metal ions to be diffused to the inner portion of the metallic layer of an electrode so as to prevent corrosion of the metal.