The role of NMP in the battery

The most commonly used solvent in the pre-treatment of lithium-ion batteries is NMP, commonly known as methyl, known as N-methylpyrrolidone, and the molecular formula is C5H9NO. The role of NMP in the battery: as a PVDF solvent, participate in the dispersion of the slurry, form a uniform medium, and maintain a stable slurry for a long time in a certain viscosity range.

N-methylpyrrolidone (NMP) is a solvent in lithium battery production. It is used to dissolve lithium salts and polymer electrolytes, accounting for 3%-6% of lithium battery manufacturing costs. When making electrode sheets, NMP is used as a solvent to fuse various materials required for electrodes to improve the energy density and coating quality of lithium batteries.

N-methylpyrrolidone (NMP) is a solvent commonly used in lithium battery production to dissolve lithium salts and polymer electrolytes.

NMP plays an important role as a solvent when making electrode sheets. It can fuse together the materials required for various electrodes, so that the binder fully contacts with other materials and is evenly distributed. The application proportion of NMP in lithium battery preparation has reached 74%. It plays a vital role in improving the energy density and coating quality of lithium batteries.

In the coating stage: as the main liquid carrier of the slurry, uniformly coated on the metal substrate with a stable thickness, it is required to have very good wettability and fluidity with the metal substrate.

In the coating and baking stage: the wet film runs at a constant speed in the oven, the solvent is regularly volatilized, the NMP bears the pore-forming function, and the NMP volatilizes from the wet film at a steady speed to form a porous microelectrode structure with uniform pore size and uniform distribution.