A method for recovering organic carbonates in an electrolytic solution of a waste lithium ion battery is provided. The organic carbonates include a first carbonate and a second carbonate having a higher melting point and a higher boiling point than the fir...

The invention provides a bis(fluorosulfonyl)imide impurity removal and purification system and a bis(fluorosulfonyl)imide impurity removal and purification method. The system comprises a light-component stripping tank, a gas-liquid separator, a product buf...