Slippery lubricant-infused porous surface based on porous aluminum oxide used for anti-fouling and passive defrosting performance

Aluminum-based superhydrophobic surfaces are attracting great interest in many fields, such as aerospace, steamship. But the use of these materials in cold conditions has been severely limited because of the inevitable frost and ice formation on the surface. The research shows that the superhydrophobic surface (SHS) cannot realize effective anti-ice, and even the rough structure of the surfaces increases the adhesion force of ice, which brings great difficulty to deice. It is important to prepare a de-icing aluminum-based surface. We successfully prepared a slippery lubricant-infused porous surface, which not only has the self-cleaning property, non-infiltration and durability like the SHS, but also has the obvious effect of postponing the freezing, and more importantly, it has obvious advantages in passive defrosting, compared with SHS.