PRODUCTION PROCESS OF ELECTRODE SOLUTION FOR LITHIUM-ION SECONDARY BATTERIES BY MIXING METHOD

Abstract

The invention relates to a process for producing lithium-ion battery electrode solutions by mixing, which includes the following steps: (i) preparing the substrate solution (bonding agent) by mixing the substrate with the solvent using a vortex-type stirring device consisting of two low-speed stirring blades and two high-speed stirring shafts, with the temperature controlled to be less than or equal to 50°C by a heat exchanger, to obtain a substrate solution with a viscosity between 12000 and 20000 mPa.s; (ii) Stir the mixture of substrate and conductive material at a controlled temperature of less than or equal to 60°C using a heat exchanger to obtain a mixture of substrate and conductive material; (iii) Add the activator to the mixture of substrate and conductive material obtained in step (iii) to obtain a plastic mixture, knead this plastic mixture in a centrifugal stirrer with a vortex-type impeller, at a controlled temperature of less than or equal to 60°C using a heat exchanger, to obtain a mixture of substrate, conductive material and activator; and (iv) Evaporate and cool the mixture obtained in step (iii) to obtain the electrode solution.