▎ 摘　　要

Structural defects on graphene has been deemed to originate from the growth process. Galvanic corrosion appears at defect sites between copper and graphene. Here, we report the self-assembly of a hydrophobic perfluorooctyltriethoxysilane (PTES) film that accurately heals the defects on graphene. The healing agent, PTES, was chemically grafted selectively on the copper substrate, which was exposed at the defect site. Interestingly, the novel method healed the defects on graphene without weakening its electronic properties. Moreover, significant improvement in corrosion resistance for graphene-coated copper was observed from the electrochemical tests and long-term storage under environmental conditions. (C) 2019 Elsevier Ltd. All rights reserved.