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

A gel electrolyte and lithium-ion battery technology, which is applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, secondary batteries, etc., can solve the problems of graphite carbon negative electrode compatibility to be improved, and achieve easy mass production and increase the migration number , Improve the effect of wettability

Active Publication Date: 2013-12-11
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, monomer of lithium ion battery gel electrolyte, preparation method of monomer, and preparation method of lithium ion battery
  • Lithium ion battery gel electrolyte, monomer of lithium ion battery gel electrolyte, preparation method of monomer, and preparation method of lithium ion battery
  • Lithium ion battery gel electrolyte, monomer of lithium ion battery gel electrolyte, preparation method of monomer, 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: making 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 electr...

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 (the relative molecular mass is 392) into a 250ml three-necked flask, raise the temperature 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 with the above structural formula is named tetrakis(acryloyloxyethyl)bisphenol...

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Abstract

The invention provides a monomer of a lithium ion battery gel electrolyte and a preparation method of the monomer, the lithium ion battery gel electrolyte and a preparation thereof, and a preparation method of a lithium ion battery. According to the general formula of the monomer, R represents the alkyl group of a dihydric alcohol, the alkyl group of a binary epoxy or the alkyl group of diglycidyl ether; A1, A2, A3 and A4 represent alkyl groups with 1 to 10 carbon atoms; and Z1, Z2, Z3 and Z4 represent organic esters with 1 to 10 carbon atoms, wherein the organic esters contain alkenyls. The preparation method of the monomer comprises following steps: phosphorous oxychloride is dissolved in an organic solvent; at least one of the dihydric alcohol, the binary epoxy or diglycidyl ether is added into the solution; an alkenyl ester and acid binding agent triethylamine are added into the mixture; catalyst triphenylphosphine corresponding to the selection of the binary epoxy may be added selectively; and the monomer of the lithium ion battery gel electrolyte is prepared by reaction under backflow of the organic solvent. Therefore, a safety risk that fire and blast of the lithium ion battery may be caused by strong oxidation conditions is lowered.

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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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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