“…With the underlying microscopic mechanisms revealed by systematic experimental measurements and DFT calculations, we can readily expect that this work can shed much light on the corrosion studies of many other related graphene systems, for example, multilayer graphene coating, [11,21,61,62] graphene wrinkles, [62][63][64][65] and graphene islands. [65] It has been shown that in a multilayer graphene coating, the defects in each layer will be covered by the neighboring layers, generating a labyrinth effect and prolonging the diffusion pathways of corrosive agents, which tends to improve the corrosion resistance comparing to the monolayer counterpart. [11,21] However, the defects of CVD graphene are not easy to be fully covered, and the corrosion enhancement efficiency usually is limited (e.g., two-to fivefold [11,21,61] ).…”