What ingredients does the lithium battery electrolyte consist of and what is their proportion?

Salt: LiPF6

Solvent: dimethyl carbonate/diethyl carbonate/methyl carbonate/ethylene carbonate/propylene carbonate, etc. The ratio is not certain and varies considerably, but ethylene carbonate ester is usually present.

Additives: vinylene carbonate, etc.

Lithium battery electrolyte is very complex and there is no fixed ratio.

Lithium battery electrolyte additives Function

Currently, lithium batteries -ion ​​mainly use liquid electrolytes and their solvents are anhydrous organic compounds such as EC (ethyl carbonate), PC (propylene carbonate), DMC (dimethyl carbonate) and DEC (diethyl carbonate) . among them are mixed solvents, such as EC2DMC and PC2DMC, etc. Conductive salts include LiClO4, LiPF6, LiBF6, LiA sF6 and LiOSO2CF3. Their conductivities are in the order LiAsF6 > LiPF6 > LiClO4 > LiBF6 > LiOSO 2CF3. LiClO4is prone to explosions and other safety issues due to its high oxidation, and is generally limited to experimental research; LiAsF6 has higher ionic conductivity, is easier to purify, and has better stability, but it contains toxic As and its use is restricted; Chemistry LiBF6 And the thermal stability is not good and the conductivity is not high. LiO SO2CF3 has poor conductivity and has a corrosive effect on the electrode, so it is rarely used. Although LiPF6 undergoes a decomposition reaction, it has high ionic conductivity. so currently, lithium-ion batteries mainly use LiPF6. Currently, most electrolytes used in commercial lithium-ion batteries use LiPF6 EC2DMC, which has high ionic conductivity and good electrochemical stability.

It would be better to be more detailed, thank you

They are generally three componentsants

Add salt

LiPF6.

Additives

are generally used to improve the cycle performance or safety performance of

batteries

.