NMP recovery in rechargeable battery manufacturing

N-Methyl-2-pyrrolidone (NMP) with the chemical formula C₅H₉NO is an essential solvent for electrode slurries in secondary battery manufacturing. It dissolves binder materials, ensuring a uniform coating of active material particles on electrode foils. Upon drying, NMP evaporates, leaving a solid, well-adhered coating.

Recovering the toxic and expensive NMP makes sense economically and from a sustainable point of view. Efficiently recovering NMP in production can lead to substantial savings annually. 

Vaisala Polaris process refractometers help to ensure the correct concentration of NMP in: 

  • scrubber, optimizing the scrubber performance 
  • distillation column, ensuring the NMP purity 

Download the application note in PDF by filling out the form.
 

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NMP in secondary battery manufacturing


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