Super-hydrophobic polyaniline-TiO2 hierarchical nanocomposite as anticorrosion coating

•Novel PANI-TiO2 nanocomposite coating by surfactant free nano-precipitation method.•Coating tailored with hierarchical structure to achieve super-hydrophobic behavior.•Super-hydrophobic coating leads to superior water-repellency and anti-corrosion.•Coating with better thermal conductivity mitigate delamination by heat expansion.