Advantages of N-Methylpyrrolidone

NMP is a highly selective solvent with the advantages of non toxicity, high boiling point, low corrosiveness, high solubility, low viscosity, low volatility, good stability and easy recovery.

In the lithium battery industry, it is mainly used as a front-end solvent for lithium batteries and is a supporting solvent for the positive electrode binder of lithium batteries. With the rapid development of the lithium battery industry in recent years, the substantial growth in China's lithium battery consumption has driven the explosion of consumption in lithium battery-related industries, and has also driven the growth of China's NMP consumption in the lithium battery industry

In addition, NMPcan also be applied in the electronics industry, high-quality materials, pharmaceuticals and other industries, which are currently relatively hot industries in China. Among them, NMP is an essential chemical solvent that participates in chemical reactions and dilution during the manufacturing process of polymer materials such as aramid, polyphenylene sulfide, and polyimide. Brother Pingtou believes that application in the lithium battery industry is one of the key factors driving the explosive growth of NMP consumption in China.

Secondly, the skyrocketing price of PVDF has led to a rapid increase in NMP attention. According to Brother Pingtou, usually lithium battery auxiliary materials mainly include solvents and binders. The main function of the solvent is to dissolve the positive and negative active materials, and the main function of the binder is to bond the active materials to the current collector. Generally, the cost of auxiliary materials accounts for 2%-5% of lithium batteries, which is smaller than the proportion of lithium battery materials, electrolytes and separator materials, and is easy to ignore.

Among them, NMP is one of the auxiliary materials of lithium batteries. When making electrode sheets, NMP is used as a solvent and is mutually soluble with water, PVDF, positive and negative electrode materials and other substances, and binds binders, positive active materials, conductive agents and other electrodes. The required substances are fused together so that the adhesive and other substances are in full contact and evenly distributed. Therefore, NMP, as a solvent, directly affects the quality of lithium battery slurry coating, thereby affecting the quality of lithium batteries.