| • Cathode material production section | |
| The volatile concentration of NMP in slurry mixing process reaches 8,000-15,000mg/m³ (accounting for 60% of the total emissions in the production process), and the sintering exhaust gas contains DMF and nanoscale metal oxide aerosols | |
| • Anode material production section | |
| The graphitization process produces asphalt smoke (5–15 μg/m³ content of benzo[a]pyrene), and the coating drying exhaust contains acetone (concentration fluctuation 200–800 mg/m³) | |
| • Electrolyte production section | |
| Lithium hexafluorophosphate synthesis waste gas containing HF (50–150 ppm), solvent purification non-condensing gas containing DMC/EMC (boiling point 80–110 °C) | |
| • Diaphragm section | |
| The dichloromethane solvent used in the wet diaphragm process will be all volatilized in the drying process, and the characteristics of low boiling point, high temperature and high concentration pose no small challenge to the combustion and recovery treatment process | |
| • Battery assembly section | |
| EC/PC volatilization in liquid injection process (concentration gradient of 100-3,000mg/m³), formation exhaust gas containing DEC (accounting for 40-60%) and trace amounts of HF |
