Abstract: The invention relates to the field of electrical engineering, in particular to multilayer film electrodes for electrolytic capacitors. The proposed multilayer anode is implemented as a substrate with a developed surface on which are sequentially arrayed a conforming layer of a valve metal, which is connected by a heterojunction formed by nanoparticles of the substrate metal and of the valve metal, which are geometrically closed between each other, and an oxide coating. The substrate is connected to the film base through a nanocomposite barrier layer, which comprises a differentiated mixture of the materials being joined, whose content varies relative to each other, together they amount to 100%, where the working surface is formed in practice by the substrate metal. What is novel is that a metal with a hardness 2-4 times greater than that of the valve metal, preferably titanium, is used as the substrate material, and the pores of the valve-metal layer are limited in size to the range 1-104 nm.