In this application note, a method to determine the water content in lithium battery electrolyte with HYDRANAL™ NEXTGEN Coulomat A-FA and C-FA is described using coulometric KF titration with direct injection.
Why Is It Important to Control Water Content in Lithium Battery Electrolyte?
Lithium battery electrolytes contain cyclic and non-cyclic organic carbonates as electrolyte solvents and fluorinated lithium salts as electrolyte salts. These electrolyte salts are known to undergo hydrolysis in the presence of residual water, forming highly toxic and corrosive hydrofluoric acid (HF), which can have a detrimental effect on the cell. Therefore, it is of utmost importance that the residual water level in the electrolyte is tightly controlled.
This Application Note Includes
- Sample preparation and procedures
- Solutions and chemicals
- Chemistry
- Instruments and accessories
- Method in detail
- Results and remarks
Method files (.lmt and .xml) for direct import and implementation on the instrument are also included.
