SULPHUROUS GEL ELECTROLYTE FOR VALVE-REGULATED BATTERIES AND METHOD OF ITS MANUFACTURING Russian patent published in 2015 - IPC H01M10/06 H01M10/10 H01M10/52 

FIELD: electricity.

SUBSTANCE: sulphurous gel electrolyte for valve-regulated batteries containing sulphuric acid, distilled water and silicone oxide according to the invention contains additionally sodium sulphate and Aerosil 200 as silicone oxide with specific surface area of 175.0-225.0 m²/g, at the following content of components, wt %: sodium sulphate 0.9-1.3; Aerosil 200 4.9-5.3; sulphuric acid with density of 1.83-1.84 g/cm³ 26.0-29.0; distilled water - the remaining share. The method for electrolyte manufacturing includes batchwise introduction of solid components to liquid components of the electrolyte and their stirring. The preset quantity of sulphuric acid with density of 1.83-1.84 g/cm³ is fed to stirred distilled water in order to reach density of sulphurous electrolyte of 1.24±0.005 g/cm³, thereupon the electrolyte is cooled down up to temperature less than 15°C; to the electrolyte stirred by stirrer with the preset rotation rate sodium sulphate is fed uniformly and stirred until sodium sulphate is solved completely, upon its solution Aerosil 200 is fed uniformly to the stirred mixture and the obtained mixture is stirred until gel is formed, at significant increase in rotation rate the ready gel acquires the preset value of viscosity.

EFFECT: improved conductivity and density of discharging current in lead-acid batteries due to improved impregnation of porous active mass for electrodes and separators with electrolyte.

2 cl, 1 tbl, 11 ex