Lithium battery electrolyte for high-pressure cleaning machine

Abstract

The invention relates to the technical field of lithium batteries, and particularly discloses a lithium battery electrolyte for a high-pressure cleaning machine, which is prepared from, by weight, 12-24 parts of vinyl phosphate ester, 16-24 parts of propylene phosphate, 8-12 parts of 1,3-dioxolane, 4-10 parts of ethylene glycol dimethyl ether, 10-15 parts of vinylene carbonate, 20-40 parts of liquid lithium hexafluorophosphate, 4-8 parts of borosilicate glass powder, 2-4 parts of a flame retardant, and 4-16 parts of p-diphosphate benzene compounds. According to the invention, the p-diphosphatebenzene compound is added; the formation speed of the SEI film can be accelerated, and the SEI film is more compact; the damage to the SEI film is repaired, the transmission distance of lithium ionsis reduced, the migration rate of the lithium ions is improved, and hydrofluoric acid can be effectively absorbed by adopting borosilicate glass powder, so that the corrosion effect of the hydrofluoric acid on positive and negative electrodes is weakened, the service life of a product is prolonged, and an electrolyte is prevented from firing and burning by adopting the flame retardant.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a lithium battery electrolyte for high-pressure cleaners. Background technique [0002] A lithium battery usually consists of a positive electrode, a negative electrode and an electrolyte. Among them, the positive electrode contains lithium cobalt oxide and many additives, and these substances are coated on aluminum foil to produce a chemical reaction of charge and discharge; the negative electrode is nano-scale carbon powder such as graphite, and these substances are used by coating on copper foil. The electrolyte in the electrolyte usually includes lithium perchlorate, lithium hexafluorophosphate, etc., but the battery made of lithium perchlorate is not good at low temperature, and there is a danger of explosion. It is currently banned in Japan and the United States; The battery made of salt has good performance, no explosion hazard, and strong applicability, especia...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a lithium battery electrolyte for high-pressure cleaners, to solve the problem that the hydrofluoric acid in the electrolyte will destroy the SEI film, thereby deeply affecting the normal operation of the positive and negative electrode functions, and reducing the use of lithium batteries Defects such as lifespan