Battery Materials NMP Shipping from TOB New Energy

Battery Materials NMP Shipping from TOB New Energy

NMP, full name N-methylpyrrolidone, is a colorless and transparent liquid, and is one of the most commonly used auxiliary materials for lithium batteries.

Generally speaking, auxiliary materials for lithium batteries 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. The amount of auxiliary materials is generally 2%-5%, compared with the cost of the four major materials (positive electrode, negative electrode, electrolyte and separator), the cost is relatively small, but the role is very imp ortant and cannot be ignored.

Among them, PVDF (polyvinylidene fluoride) is the most commonly used cathode binder, while NMP is the most commonly used solvent, and they are usually used together. NMP can be miscible with water, PVDF, positive and negative electrode materials, etc., and is widely used in the preparation of lithium batteries. When making electrode sheets, NMP is used as a solvent to mix binders, positive active materials, conductive agents and other electrodes. The substances are fused together so that the binder is fully in contact with other substances and evenly distributed. NMP is used as a solvent, and its quality will directly affect the quality of slurry coating for lithium-ion batteries.

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