SEPARATOR FOR SECONDARY ELECTRIC ACCUMULATORS WITH GAS RECOMBINATION.

摘要

Absorbent separator for accumulators comprising a substantially homogeneous mixture of a thermoplastic polymer and at least one inert charge, the inert load being chosen in the group consisting of pyrogenic silica, precipitated silica, titanium dioxide, magnesium carbonate , magnesium oxide, magnesium hydroxide or mixtures thereof, the separator having a volumetric porosity of at least 75% and an extraction pore size greater than 2 microns, characterized in that it comprises less than 18% by volume of fumed silica .