TECHNOLOGY FOCUS - POLYMERS - The water-soluble polymer is a cellulose-based compound, particularly on with viscosity of not less than 10 centipoise as a 2% aqueous solution at 25 degrees C. The water-insoluble polymer is a diene polymer or (meth)acrylate polymer, particularly with gel content of not less than 50%. The organic liquid has a boiling point not less than 80 degrees C at ambient pressure. In the composition, weight ratio of the water-soluble polymer to water insoluble polymer is 1:0.001-1:100, containing 0.1-70 wt.% the organic liquid with respect to total water-soluble and water-insoluble polymers. EXAMPLE - A monomer emulsion of styrene (400 parts), butadiene (500 parts), methyl methacrylate (350 parts), acrylamide (50 parts), 2-ethylhexyl acrylate (180 parts), itaconic acid (70 parts), divinylbenzene (30 parts), ammonium lauryl sulfate (4 parts) and sodium carbonate (10 parts) in water (1000 parts) was prepared for polymerization in the presence of ethylenediaminetetraacetic acid (10 parts) and potassium persulfate (20 parts). After reaction at 80 degrees C for 4 hours, a creamy white latex was obtained (98% yield), with average particle diameter of 0.18 mum and gel content of 94% in the polymer. After distilling off the water and adjusting pH to 7 with lithium hydroxide, the particles were dispersed in N-methylpyrrolidone to give a dispersion with an 8.8% solid concentration. Separately, carboxymethylcellulose sodium salt (viscosity = 4000 cps as a 2% aqueous solution at 25 degrees C) was formulated into a 5% aqueous solution. A mixture of the above polymer dispersion and aqueous solution, at a total of 30% N-methylpyrrolidone, was stirred at 80 degrees C for 4 hours and then dehydrated to give a dispersion composition with moisture content of 730 ppm and solid concentration of 7.7%. Positive and negative electrodes were both produced with 6 parts the dispersion composition, and subsequently batteries were made from the electrodes. Properties of the batteries: By repeatedly charging and discharging at a current density of 0.1 mA/square cm, 4.2 V charge and 3.2 V discharge, the discharge capacity = 180 mAh/g after 5 times, 178 mAh/g after 10 times, and 168 mAh/g after 50 times.