TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The initiator is: water-soluble; and a persulfate, preferably ammonium persulfate.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The (co)polymeric electrolyte is styrene and styrene sulfonate. The (co)polymeric electrolyte comprises an acrylic acid salt and at least one alkyl (meth)acrylate. EXAMPLE - Polymerization reactor was equipped with a jacket for circulating a heat transfer fluid for heating/cooling the system, a pipe for introducing a probe for measuring the temperature of the mixture, a pipe allowing nitrogen gas to remove oxygen introduction inhibiting the polymerization reaction, a stirrer connected to a motor to rotate at variable speed, of two tubes allowing the addition of additives and a tubing connected to a condensation/reflux system. The reactor was charged with 390 mg styrene sulfonate dissolved in 10 ml of deionized water and agitated at 450 rpm. By nitrogen stitching, the reactor vessel bottom was degassed for at least 15 minutes until the solution was homogeneous. The reactor then remained under constant nitrogen flow. The mixtures comprising a solution of 0.2 ml of 3,4-ethylenedioxythiophene and 6.6 ml isopropanol, a dispersion of 0.15 ml of styrene in 3.4 ml isopropanol using an ultra-sound bath, and a solution of 1.057 g of ammonium persulfate in 26.4 ml of deionized water were prepared in containers. Then the reactor was stirred at 600 rpm and the first solution of 3,4-ethylenedioxythiophene was introduced. The reaction temperature was controlled at 25 plus minus 2 degrees C. When the reactor components were mixed, the dispersion of styrene monomer was introduced into the reactor, followed by bleaching the reaction medium, and the heating set point was mounted so as to reach a temperature of 45 degrees C in the reactor. When this temperature was reached, the first quarter of the initiator solution of ammonium persulfate was introduced where the color of the reaction mixture gradually changed to green/blue glass which showed the polymerization of 3,4-ethylenedioxythiophene. After reacting for 3 hours, continuous dosing of one-fourth of remaining initiator solution of ammonium persulfate for every 3 hours (for 3 times) was carried out using pump or syringe pump, while maintaining the reactor temperature at 45 plus minus 2 degrees C. At the end of the addition, the temperature was maintained at 45 plus minus 2 degrees C for an additional 2 hours before cooling and discharging the product. Purification of the final product was carried out by ultrafiltration. Thus 80% poly(3,4-ethylenedioxythiophene)-polystyrene latex co polystyrene sulfonate was synthesized.