WORKING ELECTROLYTE FOR CAPACITOR, METHOD OF PREPARING SAID ELECTROLYTE AND ALUMINIUM ELECTROLYTIC CAPACITOR WITH SUCH ELECTROLYTE Russian patent published in 2009 - IPC H01G9/35 H01G9/145 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, particularly to a working electrolyte for a capacitor, mainly for an aluminium electrolytic capacitor, at nominal voltage of 6.3-63 V and working temperature from minus 60 to 105°C, which contains the following, in wt %: lactone - 20-70, amido-containing compound - 10-50, dicarboxylic acid or its ammonium salt - 3-30, tertiary aliphatic amine - 3-30, aromatic nitro compound - 0-8, orthophosphoric acid - 0-6, benzoic acid or its ammonium salt - 0-5, deionised water - 0-5; as well as to its method of preparation and an aluminium electrolytic capacitor with such a working electrolyte.

EFFECT: stable properties of the working electrolyte and capacitor, low equivalent series resistance at nominal voltage from 6.3 to 63 V in the entire interval of the given working temperature, especially at low temperature of minus 60°C.

8 cl, 4 tbl