How to make lithium battery electrode slurry?

How to make lithium battery electrode slurry? Lithium battery electrode slurry mainly includes four steps: raw material pretreatment, mixing, dry powder dispersion and dilution. The positive and negative active materials are mixed with special conductive agents, adhesives, and solvents in a certain proportion to form a slurry. Lithium battery slurry control points: 1. Viscosity 2. Multi-grain 3. The main points of solid content process control: 1. Stirring speed 2. Stirring temperature 3. Exciting concentration and vacuum degree 4. Pretreatment of lithium battery cathode pulping raw materials: positive active material, conductive agent, binder, atmospheric drying and dehydration, solvent dehydration with dry molecular sieve or special material extraction equipment. Mixing of raw materials: a. Dissolution and heat treatment of binder; Ball mill powder dispersion containing active material and conductive agent: The binder liquid wets the solid, and all components of the extruded gas in the process can be glued in the negative electrode material Soaking, so the positive dispersion method of powder is easier to disperse: static method (long dispersion time, poor effect, but does not damage the original structure material) mixing method (short time, good effect, but may damage the structure of the material itself) the higher the mixing speed , The propagation speed is fast, but the structure of the material itself and damage to the equipment, the mixing temperature is appropriate, good slurry flow, easy to disperse, too hot crust paste is simple, too cold fluidity is insufficient, the mixing concentration: the smaller, the faster the dispersion, but too Thinning will cause material waste and slurry precipitation, new vacuum: high vacuum is beneficial to the discharge of material gaps and surface gas, reduces the difficulty of liquid adsorption, and is easy to disperse and evenly dilute: adjust the paste to an appropriate concentration for coating lithium batteries The negative pulping principle of cathode pulping is the same as the principle of positive pulping. Note: Graphite and the binder solution have different polarities and are not easy to disperse. It can be moistened with ethanol (ethanol, isopropanol) aqueous solution, and then mixed with the binder solution; B. Appropriately reduce the stirring concentration to improve dispersion; C. The dispersion process is to reduce the distance between polar and non-polar objects , Increase the potential energy or surface energy, appropriately increase the stirring temperature, improve the fluidity, and reduce the difficulty of dispersion of the endothermic reaction. Lithium battery pulping 1. The solid phase content of the slurry should be gradually adjusted from high to low. 23. The slurry should not be used for a long time to avoid its precipitation or decrease in uniformity. Statement: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Eight advantages of polymer lithium batteries