Styrene–butadiene rubber (SBR), as a solvent and repository of electric charges, starts to gain these properties after adding to SBR MgCl 2 or NiCl 2 or ZnCl 2 in the form of methanol solution with addition of active carbon. Electrical conductivity of such an SBR-active carbon system with added MgCl 2 or NiCl 2 or ZnCl 2 equals from 10 −5 to 10 −4 S cm −1 at a room temperature of 293 K and a frequency of 10 kHz. The examined electrolytes were tested for the frequency range of 1 kHz–25 kHz. These polymer electrolyte systems may find their application as materials for anticorrosive and antielectrostatic protection of fuel or hazardous material tanks.