FILM CAPACITOR Russian patent published in 2014 - IPC H01G4/30 H01G9/48 H01G11/26 

FIELD: electricity.

SUBSTANCE: proposed invention is referred to electric engineering, namely, to composite film electrolytic capacitors. A film capacitor comprises a current collector - aluminium foil, the surface of which via a barrier layer is developed by means of an electrode material from spongy valve metal impregnated with electrolyte. The novelty is the fact that the electrode material is made as multi-layer, each composite layer of which represents a film base with corrugations of 50-100 nm from spongy titanium with thickness of 50-100 mcm, carrying on the surface the local cogs from nanoclusters of valve metal for electric contact as adjacent to each other, at the same time, starting from the second one, the layer of the spongy titanium is made with through pores with size of 0.3-5 mcm with total volume of at least 10-15% of the layer volume, at the same time the conformal layer of porous titanium with the barrier layer on the surface of the current collector is connected by a heterojunction from composite nanoparticles, and the barrier layer on the surface of aluminium foil is made of titanium nitride or diamond-like nanolayer from amorphous carbon α-C:H, which are connected to each other by means of an adhesive layer formed by opposite distribution of materials of adjacent layers, mutually complementing each other by thickness.

EFFECT: increased specific capacity of a film capacitor is technical result of the invention.

3 cl, 3 dwg