What are the key points to pay attention to when mixing lithium battery raw materials?

The preparation of lithium battery positive (negative) electrode slurry is a mixing process that mixes positive (negative) electrode materials such as positive (negative) electrode active material, conductive agent, binder, etc., the mixing material is the battery active material material And auxiliary materials, highly dispersed in a solvent to form a Newtonian high-viscosity fluid, to achieve the purpose of fully mixing and evenly dispersing the active material, conductive agent, binder and other additives. Points to note: (1) The raw materials must meet the process requirements, such as the type of material and the amount of each component added; (2) The positive electrode must not bring moisture; (3) The equipment should be dry and the indoor humidity should be controlled; (4) PVDF The dissolution process is relatively slow. It is necessary to dissolve PVDF in NMP in advance before pulping. CMC is also a difficult solution. Dissolve CMC in water before pulping; PVDF and CMC must be fully dissolved and dispersed evenly. If there is a particle binder or The thickener has to increase the mixing time or change the mixing process; (5) After adding the conductive agent and the active material, the slurry should be uniform, without agglomerated particles, and the bubbles in the slurry should be eliminated. The positive electrode viscosity: 4000-10000mpa .s, negative electrode viscosity: 1500mpa.s, slurry viscosity and solid content are critical to the coating process. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Analysis of the charging method of lithium iron phosphate battery pack