BATTERY PASTE AND METHOD FOR ITS PREPARATION Russian patent published in 2017 - IPC H01M4/14 H01M4/20 H01M4/62 H01M10/10 

FIELD: chemistry.

SUBSTANCE: invention relates to the production technology for lead-acid batteries and may be used in the manufacture of lead-acid battery and positive electrodes of accumulator batteries. The battery paste includes lead oxides - PbO and Pb₃O₄, electrolyte of sulfuric acid in the amount providing formation of 11.21 wt % ± 5 rel.% lead sulphate and oxide compounds in the crude pre-made paste. The paste also includes titanium dioxide as an expander, a porous hydrophilic microfiber based on polyester, a highly amorphous pyrogenic silicon dioxides, a metal sulfate from alkali metals, together with aluminum sulphate and deionized water in the amount providing the paste moisture of 15.0 wt % ± 5 rel. %. the method for preparing the paste comprises charging the mechanical mixer with paste components in the specific sequence at 140-220°C or from 60 to 80°C. When the temperature drops to 45°C the paste mixing is finished and operations of its process control are performed.

EFFECT: invention provides an increase in the durability of the positive active mass of the electrode plates and a discharge capacity in the long discharge mode while reducing the rate of degradation at high charge-discharge currents and reducing the internal resistance.

6 cl, 22 dwg, 9 tbl