Basic requirements for electrolytes of lithium ion batteries

Electrolytes for lithium ion batteries should meet the following basic requirements:

A. Has a high ionic conductivity and a large number of lithium ions in a wide temperature range, so as to reduce the concentration polarization of the battery during charging and discharging.

B. Good thermal stability to ensure that the battery operates within suitable temperature range.

C. has a wide electrochemical window, and it is best to have an electrochemical stable window of 0 - 5V to ensure that there is no significant side reaction at the two poles of the electrolyte to meet the singleness of the electrode reaction in the electrochemical process.

D. When used instead of diaphragm, it also has good mechanical properties and processability.

E. The price is low.

F. has good safety, high flash point or no burning.

G. non-toxic and does not cause harm to the environment.

These are the factors that must be considered to measure the performance of the electrolyte. It is also an important prerequisite for the high performance, low resistance, low price, long life and safety of lithium ion batteries.