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Lithium-ion battery gel electrolyte and its monomer, its preparation method and preparation method of lithium-ion battery

A gel electrolyte, lithium ion battery technology, applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, secondary batteries, etc., can solve the problem of graphite carbon negative electrode compatibility needs to be improved, etc., to achieve easy mass production, enhance sports ability , the effect of reducing the presence of free solvents

Active Publication Date: 2015-09-16
DONGGUAN AMPEREX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Chinese Patent Application Publication No. CN101938008A published on January 5, 2011 discloses a flame retardant for lithium-ion battery electrolyte and a preparation method thereof, wherein a flame retardant containing an alkynyl phosphate ester is used, but with graphite carbon Negative compatibility still needs to be improved

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  • Lithium-ion battery gel electrolyte and its monomer, its preparation method and preparation method of lithium-ion battery
  • Lithium-ion battery gel electrolyte and its monomer, its preparation method and preparation method of lithium-ion battery
  • Lithium-ion battery gel electrolyte and its monomer, its preparation method and preparation method of lithium-ion battery

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preparation example Construction

[0031] According to the preparation method of the monomer for lithium ion battery gel electrolyte according to the second aspect of the present invention, it prepares the monomer for lithium ion battery gel electrolyte according to the first aspect of the present invention, comprising the steps of: adding phosphorus oxychloride Dissolved in an organic solvent; adding at least one of dibasic alcohol, dibasic epoxy or diglycidyl ether; optionally adding the corresponding catalyst triphenylphosphine when dibasic epoxy is selected; adding alkenyl The esters react with the acid-binding agent triethylamine in the reflux state of the organic solvent to obtain a monomer for lithium-ion battery gel electrolyte.

[0032] In the above steps, the order of adding at least one of dibasic alcohol, dibasic epoxy or diglycidyl ether and adding alkenyl esters and acid-binding agent triethylamine can be reversed.

[0033] In the preparation method of the monomer for lithium ion battery gel electro...

Embodiment A

[0053] Add 40ml of ethyl acetate and 0.4mol of phosphorus oxychloride into a 250ml three-necked flask and stir to dissolve;

[0054] Slowly add 0.2mol of 1,3-propanediol dropwise into a 250ml three-necked flask at 15°C, and react at constant temperature for 1h;

[0055] At room temperature, add 1 mol of triethylamine and 0.8 mol of hydroxyethyl acrylate into a 250ml three-necked flask, raise the temperature to 50°C, and react at a constant temperature for 10 hours;

[0056] After extraction, washing with water, filtration, vacuum distillation at 70°C and 850MPa, and drying, a light yellow oily product was obtained with a yield of 90%.

[0057] The structural formula of the lithium-ion battery gel electrolyte monomer prepared by embodiment A is as follows:

[0058]

[0059] The monomer with the above structural formula is named tetrakis (acryloyloxyethyl) propylene glycol bisphosphate, TABP for short.

Embodiment B

[0061] Add 40ml toluene and 0.4mol phosphorus oxychloride to a 250ml three-necked flask and stir to dissolve;

[0062] Mix 1 mol of triethylamine and 0.8 mol of hydroxyethyl acrylate, drop them into a three-necked flask at room temperature, and react at 35°C for 5 hours;

[0063] Add 0.18mol of epoxy resin E51 (its relative molecular mass is 392) into a 250ml three-necked flask, heat up to 50°C, and stir at constant temperature for 1h;

[0064] The catalyst triphenylphosphine was added into a 250ml three-necked flask, and the temperature was raised to 80°C for a constant temperature reaction for 2 hours. After the reaction was completed, the pure product was obtained by filtering, washing, and drying with a yield of 80%.

[0065] The structural formula of the lithium ion battery gel electrolyte monomer that embodiment B makes is as follows:

[0066]

[0067] Where n=1, the monomer having the above structural formula is named tetrakis(acryloyloxyethyl)bisphenol A bisphospha...

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Abstract

The invention provides a monomer for a lithium ion battery gel electrolyte and a preparation method thereof, a lithium ion battery gel electrolyte and a preparation method thereof, and a preparation method of a lithium ion battery. The general formula of the monomer is: R is an alkyl group of a dibasic alcohol, an alkyl group of a dibasic epoxy or an alkyl group of a diglycidyl ether; A1, A2, A3, and A4 are carbon atoms An alkyl group with a number of 1-10; Z1, Z2, Z3, and Z4 are organic esters with a carbon number of 1-10 and an alkenyl group. The preparation method of the monomer comprises the steps of: dissolving phosphorus oxychloride in an organic solvent; adding at least one of dibasic alcohol, dibasic epoxy or diglycidyl ether; adding alkenyl esters and acid-binding agent triethylamine; optionally add the corresponding catalyst triphenylphosphine when the binary epoxy is selected; react under the reflux state of the organic solvent to obtain the monomer for lithium ion battery gel electrolyte. As a result, the safety risk of ignition and explosion of the lithium-ion battery in a strongly oxidized state can be reduced.

Description

technical field [0001] The invention relates to the field of lithium-ion battery electrolytes, in particular to a monomer for a lithium-ion battery gel electrolyte and a preparation method thereof, a lithium-ion battery gel electrolyte and a preparation method thereof, and a preparation method of a lithium-ion battery. Background technique [0002] In 1991, Sony Corporation of Japan creatively adopted carbon materials as the negative electrode active material of lithium-ion batteries, which brought revolutionary changes to the field of lithium-ion batteries. Since then, lithium-ion battery technology has developed rapidly and is widely used in mobile phones, cameras, notebook computers and other portable appliances. Lithium-ion batteries have many advantages, such as high voltage, small size, light weight, high specific capacity, no memory effect, no pollution, small self-discharge, and long cycle life. electrical appliances. However, the single-cell lithium batteries used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0565H01M10/058
CPCY02E60/10Y02P70/50
Inventor 修倩游从辉江辉孙成栋郑义张新枝
Owner DONGGUAN AMPEREX TECH
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