Application of Vacuum Defoaming Mixer in Lithium Battery Paste Industry

Lithium battery core slurry mixing is a mixed dispersion process that has a greater impact on product quality than 30% throughout the entire production process of lithium ion batteries, and is the most important link in the entire production process.

The cathode paste of a lithium ion battery is composed of an adhesive, a conductive agent, and a cathode material; The negative electrode slurry is composed of adhesive, graphite carbon powder, etc. The preparation of positive and negative electrode slurries involves a series of technological processes, such as the mutual mixing, dissolution, and dispersion of liquid and liquid, as well as between liquid and solid materials, and is accompanied by changes in temperature, viscosity, and environment. In the positive and negative electrode pastes, the dispersion and uniformity of granular active substances directly affect the movement of lithium ions between the two electrodes of the battery. Therefore, the mixing and dispersion of pastes of various electrode sheet materials is crucial in the production of lithium ion batteries. The quality of slurry dispersion directly affects the quality of subsequent lithium ion battery production and the performance of products.

The vacuum defoaming mixer is a mixing equipment for basic materials. It uses the centrifugal principle to stir. While rotating at high speed, it can be combined with a high-power vacuum pump to evenly mix the materials and vacuum them in seconds to minutes, achieving the effect of removing bubbles. Equipped with different fixtures and cups, it is easy to meet all the requirements from testing to mass production. It can store 10 sets of data (customizable), and each set of data can be divided into 5 sections to set different parameters such as time, rotational speed, vacuum degree, etc., which can meet the requirements of stirring and defoaming of most materials.