Silazane additive and lithium ion battery electrolyte prepared by using same and capable of preventing corrosion of steel shell

Abstract

The invention specifically relates to a silazane additive and a lithium ion battery electrolyte prepared by using the same and capable of preventing corrosion of a steel shell, belonging to the technical field of additives for lithium ion battery electrolytes. The silazane additive provided by the invention is used as a steel shell corrosion inhibitor in the lithium ion battery electrolyte and can continuously react with moderately strong corrosive substances in the lithium ion battery electrolyte, thereby enabling the steel shell to maintain shining even after long time storage in the lithium ion battery electrolyte. The lithium ion battery electrolyte prepared by using the silazane additive and capable of preventing corrosion of the steel shell is directed at respective physicochemical characteristics of a solvent, a lithium salt and the additive and allows the solvent, the lithium salt and the silazane additive to perform respective advantages and mutually inhibit respective disadvantages after appropriate proportioning of the solvent, the lithium salt and the silazane additive; through the synergistic effect of the solvent, the lithium salt and the silazane additive, the anticorrosion effect of the lithium ion battery electrolyte provided by the invention is far better than that of conventional lithium ion battery electrolytes, and a preparation process for the lithium ion battery electrolyte is simple and easily practicable and has good market prospects.

Description

technical field

[0001] The invention belongs to the technical field of electrolyte additives for lithium-ion batteries, and in particular relates to silazane additives and lithium-ion battery electrolytes prepared by using the silazane additives to prevent corrosion of steel shells. Background technique

[0002] Lithium-ion batteries are widely used in various electronic devices due to their high energy density, low self-discharge rate, and environmental protection. In the production process of lithium-ion batteries, there will inevitably be residual electrolyte on the surface of the battery after liquid injection. If the electrolyte remaining on the surface of the battery cannot be wiped off in time or cannot be wiped clean, the battery will be taken out of the glove box and cleaned. When placed in an open environment, the residual electrolyte will quickly react with the air to form strong corrosive substances. The presence of strong corrosive substances will corrode the ap...

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