METHOD TO MANUFACTURE ANODES OF VOLUME-POROUS ELECTROLYTIC CAPACITORS Russian patent published in 2012 - IPC H01G9/52 

FIELD: electricity.

SUBSTANCE: according to the invention, the method of making volume-porous anodes includes preparation of a source mixture, consisting of a powder of a refractory metal, with reduced content of oxygen, and at least one binding reagent, comprising a plasticiser and/or an organic binder, pressing of the prepared mix, removal of the binding reagent by means of thermal decomposition and sintering of the pressed anode, at the same time the binding reagent contains distearylethylenediamine as a plasticiser, and the organic binder is represented by polyfluoridated alcohols-telomers of the general formula H(CF₂CF₂)n·CH₂OH, where n=1-6. At the same time the ratio between the metal powder and the binder makes 1:0.03-0.05, pressing is carried out until the density becomes 2-5 g/cm³, the binder is removed at the temperature of 450-500°C, and sintering of the pressed anode body is carried out at the temperature of 1345-1700°C. To increase looseness prior to pressing, additional heating of the powder is carried out at the temperature of 50-60°C, and the powder is sent through a sieve, the source powder is a nanocrystalline metal powder of tantalum or niobium, produced by the electrolytic method with size of 10-100 nm.

EFFECT: increased specific capacitance.

4 cl, 4 ex