The invention discloses a preparation method for a
lithium-
ion button
cell. The preparation method comprises the following steps: preparation of positive and negative
electrode slurry;
coating of the
slurry for preparation of pole pieces;
cutting of the pole pieces; assembling of the
cell; etc. The preparation of the
slurry is realized through simultaneous addition of raw materials and step-by-step rotation and homogenization, and the process of rotation and homogenization is divided into three stages, i.e., low-speed rotation and homogenization, high-speed rotation and homogenization and medium-speed rotation and homogenization. According to the invention, in virtue of high-speed revolution and rotation of a container, high-speed collision and shearing occur among
solid particles and between the particles and the container, all the
solid particles are not aggregated any longer and are uniformly dispersed in a
solvent; homogenization efficiency is improved, and manufacturing of a great number of button cells can be completed in one day, so research and development efficiency is improved and button
cell manufacturing efficiency is enhanced; and the quality of the button cell is improved by improving uniformity and dispersibility of the slurry in mixing, so the battery can better reflect material performance and performance of the battery is improved.