Preparation technology of electrolyte for lithium battery

Abstract

The invention discloses a preparation technology of an electrolyte for a lithium battery. The preparation technology comprises the following steps of adding organic amines which account for 1%-3% of weight percentage of an organic solvent to the organic solvent; cooling the organic solvent to 0-3 DEG C, adding a lithium salt to the organic solvent in a stirring state, controlling the temperature of the organic solvent to be 0-10 DEG C in the adding process; and finally, carrying out strong stirring for 10-20 minutes after adding is completely finished, and then preparing the electrolyte for the lithium battery. By the preparation technology and the raw materials disclosed by the invention, the electrolyte which has stable viscosity and is capable of reducing the internal resistance of the lithium battery can be prepared, so that the problem that the electrolyte prepared by an existing method fails to have stable viscosity and reduce the internal resistance of the lithium battery at the same time is solved.

Description

technical field [0001] The invention relates to the field of lithium batteries, in particular to a preparation process for lithium battery electrolyte. Background technique [0002] The electrolyte is an important part of the lithium battery. It is an ionic conductor that conducts the conduction between the positive and negative electrodes of the battery. Its own performance and the interface conditions formed with the positive and negative electrodes greatly affect the performance of the battery. An excellent non-aqueous electrolyte for lithium batteries should meet the following requirements: (1) Good chemical stability, no chemical reaction with the positive and negative active materials and current collectors (generally aluminum foil and copper foil) in the battery; (2) ) wide electrochemical stability window; (3) high ionic conductivity and low electronic conductivity; (4) appropriate temperature range, that is, high boiling point and low melting point; (5) safe, low to...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a preparation method of lithium battery electrolyte, which can prepare electrolyte with stable viscosity and lower internal resistance of lithium battery, thereby solving the problem of stable viscosity and lower lithium battery electrolyte prepared by the existing method. The problem that the internal resistance of the pool cannot be taken into account