Method for forming catalytic nanocoating

A method for forming a catalytic nanocoating on a surface of a metal plate, wherein the method comprises

• pretreating the surface of the metal plate by means of heat treatment at 500-800° C.,
• forming a metal oxide support by washcoating on the surface of the metal plate such that the surface of the metal plate is washcoated with a metal oxide based slurry,
• calcining the metal oxide support at 500-800° C. after the washcoating, and
• coating the surface of the metal plate by depositing catalytically active metals and/or metal oxides on the metal oxide support by means of an atomic layer deposition (ALD) method in order to form a thin and conformal catalyst layer on the metal plate.