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Polyetherimide gel polymer electrolyte and preparation method thereof

A technology of polyetherimide gel and polyetherimide, applied in circuits, electrical components, secondary batteries, etc., can solve the limitations of gel polymer electrolytes, poor electrochemical stability, poor interface compatibility, etc. Problems, to achieve the effect of low production cost, improve liquid absorption and liquid retention capacity, and not easy to agglomerate

Inactive Publication Date: 2016-07-06
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, commonly used gel polymer electrolytes generally have disadvantages such as poor electrochemical stability, poor interfacial compatibility, and low mechanical properties, which limit the practical application of gel polymer electrolytes.

Method used

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  • Polyetherimide gel polymer electrolyte and preparation method thereof
  • Polyetherimide gel polymer electrolyte and preparation method thereof
  • Polyetherimide gel polymer electrolyte and preparation method thereof

Examples

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Embodiment 1

[0039] Unless otherwise specified, the reagents described in the examples of the present invention are all analytically pure; wherein the halloysite nanotubes are produced by Shandong Qingdao Yuanxin Nanotechnology Co., Ltd.

[0040] A polyetherimide gel polymer electrolyte, the preparation raw material formula is: 0.1 parts by mass of halloysite nanotubes, 77.9 parts by mass of organic solvent containing amide groups, and 22 parts by mass of polyetherimide;

[0041] The preparation method of the polyetherimide gel polymer electrolyte is as follows:

[0042] Weigh 0.05g of halloysite nanotubes, add them into 38mL N-methylpyrrolidone, and disperse them by ultrasonic for 3h to obtain a uniformly dispersed mixed solution I; wherein, the density of N-methylpyrrolidone is 1.026g / cm 3 .

[0043] Weigh 11g of polyetherimide and add it to the mixed solution I, and magnetically stir it at room temperature for 12 hours to obtain a uniformly mixed mixed solution II;

[0044]Pour the mi...

Embodiment 2

[0061] A polyetherimide gel polymer electrolyte, the preparation raw material formula is: 1 mass part of halloysite nanotube, 74 mass parts of organic solvent containing amide group, 25 mass parts of polyetherimide;

[0062] The preparation method of the polyetherimide gel polymer electrolyte is as follows:

[0063] Weigh 0.5g of halloysite nanotubes, add them into 39.2mL of dimethylformamide, and disperse them ultrasonically for 6 hours to obtain a uniformly dispersed mixed solution I; among them, the density of dimethylformamide is 0.9445g / cm 3 .

[0064] Weigh 12.5g of polyetherimide and add it to the mixed solution I, and magnetically stir for 24 hours at room temperature to obtain a uniformly mixed mixed solution II;

[0065] Pour the mixed solution II into a syringe, apply a voltage of 18kV, and a flow rate of 0.8mL / h, and use a roller to electrospin under the condition of a receiving distance of 20cm to obtain a fiber membrane;

[0066] Move the obtained fiber membran...

Embodiment 3

[0069] A polyetherimide gel polymer electrolyte, the preparation raw material formula is: 0.5 parts by mass of halloysite nanotubes, 75.5 parts by mass of dimethylacetamide, and 24 parts by mass of polyetherimide;

[0070] The preparation method of the polyetherimide gel polymer electrolyte is as follows:

[0071] Weigh 0.2 g of halloysite nanotubes, add them into 32.3 mL of dimethylacetamide, and disperse them by ultrasonic for 4 hours to obtain a uniformly dispersed mixed solution I; among them, the density of dimethylacetamide is 0.9366 g / cm 3 .

[0072] Weigh 9.6g of polyetherimide and add it to the mixed solution I, and stir it magnetically at room temperature for 16 hours to obtain a uniformly mixed mixed solution II; / h, electrospinning with a roller under the condition that the receiving distance is 25cm, to obtain a fiber film;

[0073] Move the obtained fiber film to a drying oven at 110°C for 30 hours, and peel it off after it is completely dry;

[0074] After im...

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Abstract

The invention belongs to the technical field of gel polymer electrolytes and particularly provides a polyetherimide gel polymer electrolyte. Raw materials for preparing the polyetherimide gel polymer electrolyte comprise polyetherimide and halloysite nanotubes. Preferably, the formula comprises the following preparation raw materials in parts by weight: 0.1-1 part of halloysite nanotubes, 74-77.9 parts of an acylamino-containing organic solvent and 22-25 parts of polyetherimide. Meanwhile, the invention further provides a preparation method of the polyetherimide gel polymer electrolyte. The preparation method is simple to operate, low in production cost and high in safety. The gel polymer electrolyte has the characteristics of stability, plasticity and nonliquidity of a solid electrolyte, also has the characteristics of high ion conductivity of a liquid electrolyte, a wide electrochemical stability window, good compatibility with an electrode material and the like, and can be widely applied to production of the battery electrolyte.

Description

technical field [0001] The invention relates to the technical field of gel polymer electrolytes applied to lithium batteries, in particular to polyetherimide gel polymer electrolytes and a preparation method thereof. Background technique [0002] The polymer lithium-ion battery was born in 1994. The polymer electrolyte was used to replace the liquid electrolyte, which solved the problem of easy leakage of the liquid electrolyte and improved the safety of use, so it has received widespread attention. [0003] Polymer electrolytes can be divided into all-solid polymer electrolytes and gel polymer electrolytes according to their morphology. Electrical conductivity, and at the same time, it has the characteristics of good safety, flexible design, and easy large-scale production of all-solid polymer electrolytes, which provide guarantee for the application of large lithium-ion batteries in the field of new energy vehicles, solar and wind power generation energy storage equipment....

Claims

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Application Information

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IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0525H01M10/0565Y02E60/10
Inventor 隋刚张洒洒方群杨小平
Owner BEIJING UNIV OF CHEM TECH
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