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Electrolyte for preventing corrosion of steel shell prepared by using dimethylamine borane

A dimethylamine borane and electrolyte technology, applied in the battery field, can solve the problems of wasting manpower and material resources, and achieve the effects of improving interface properties, improving compatibility, and inhibiting oxidative or reductive decomposition

Active Publication Date: 2019-01-08
徐州宏武纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the erasure is not timely or the time interval between injection and cleaning is too long, corrosion will still inevitably occur, which will inevitably waste a lot of manpower and material resources

Method used

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  • Electrolyte for preventing corrosion of steel shell prepared by using dimethylamine borane
  • Electrolyte for preventing corrosion of steel shell prepared by using dimethylamine borane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In the embodiment of the present invention, the electrolyte solution for preventing steel shell corrosion prepared by using dimethylamine borane is composed of 85% of organic solvent, 10% of lithium hexafluorophosphate and 5% of dimethylamine borane in terms of mass percentage; In terms of percentage, it is composed of 28% linear carboxylate solvent and 72% aromatic hydrocarbon solvent; the linear carboxylate solvent is n-propyl acetate; the aromatic hydrocarbon solvent is toluene.

Embodiment 2

[0026] In the embodiment of the present invention, the electrolyte solution for preventing steel shell corrosion prepared by using dimethylamine borane is composed of 88% of organic solvent, 8% of lithium hexafluorophosphate and 4% of dimethylamine borane in terms of mass percentage; In terms of percentage, it is composed of 35% linear carboxylate solvent and 65% aromatic hydrocarbon solvent; the linear carboxylate solvent is ethyl propionate; the aromatic hydrocarbon solvent is xylene.

Embodiment 3

[0028] In the embodiment of the present invention, the electrolyte solution for preventing steel shell corrosion prepared by using dimethylamine borane is composed of 86% of organic solvent, 9% of lithium hexafluorophosphate and 5% of dimethylamine borane in terms of mass percentage; In terms of percentage, it is composed of 30% linear carboxylate solvent and 70% aromatic hydrocarbon solvent; the linear carboxylate solvent is n-propyl propionate; and the aromatic hydrocarbon solvent is trifluorobenzene.

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Abstract

The invention discloses steel shell corrosion preventing electrolyte prepared from dimethylamine. The electrolyte is prepared from, by mass, 85-88% of an organic solvent, 8-10% of lithium hexafluorophosphate and 4-5% of dimethylamine borane. The organic solvent is composed of, by mass, 28-35% of a linear carboxylic ester solvent and 65-72% of an aromatic hydrocarbon solvent. The electrolyte prepared from the dimethylamine borane, the organic solvent and the lithium hexafluorophosphate is excellent in corrosion resistance, and lithium ion batteries prepared by application of the electrolyte have a bright market prospect.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to an electrolyte solution for preventing corrosion of steel shells prepared by using dimethylamine borane. Background technique [0002] Lithium-ion batteries have the advantages of high working voltage, high specific energy density, long cycle life, low self-discharge rate, no memory effect, and low environmental pollution. ideal power source. [0003] In the production process of lithium-ion batteries, the operation of injecting electrolyte into the battery will inevitably have residual electrolyte on the surface of the battery. Take out the glove box and place it in an open environment. The residual electrolyte will quickly react with the air to form strong corrosive substances. The existence of these strong corrosive substances will corrode the appearance of the steel case battery, resulting in poor appearance of the battery. Serious or even scrapped. [0004] In view of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0525H01M10/0569H01M10/0567H01M10/0568
CPCH01M10/0525H01M10/0567H01M10/0568H01M10/0569H01M2300/0028Y02E60/10
Inventor 周泽
Owner 徐州宏武纳米科技有限公司