A coating composite including an outer slippery interface layer disposed on a surface of a photothermal layer, wherein the outer slippery interface layer includes a first poly(dialkylsiloxane) and an oil; and the photothermal layer includes photothermal nanoparticles and a second poly(dialkylsiloxane), a kit including the coating composite precursors, and methods of preparing the coating composite. The coating composite exhibits anti-icing and anti-frosting properties.