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P(MAh-AA)-PEG4000-based gel polymer electrolyte and preparation method thereof

A gel polymer and polymer technology, applied in circuits, electrical components, secondary batteries, etc., can solve the unsatisfactory film-forming properties, thermal properties and dimensional stability of polyacrylate gel polymer electrolytes, etc. problem, to achieve the effect of good conductivity

Inactive Publication Date: 2012-01-18
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0005] In order to solve the problem of unsatisfactory film-forming properties, thermal properties and dimensional stability of polyacrylate gel polymer electrolytes, the present invention proposes a polyacrylate cross-linked polymer that has been successfully synthesized as a matrix Preparation of Gel Polymer Electrolyte

Method used

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  • P(MAh-AA)-PEG4000-based gel polymer electrolyte and preparation method thereof

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Embodiment 1

[0022] Embodiment 1: lithium perchlorate (LiClO 4 ) was dissolved in propylene carbonate (PC) to prepare an organic solution with a concentration of 1mol / L; then 20g of polymer was dissolved in 80g of this organic solution, and stirred evenly at 50°C; then, the obtained homogeneous viscous The thick liquid flows along the polytetrafluoroethylene plate, and after cooling, the condensed polymer electrolyte membrane GPE-20 is obtained.

Embodiment 2

[0023] Embodiment 2: lithium perchlorate (LiClO 4 ) was dissolved in propylene carbonate (PC) to prepare an organic solution with a concentration of 1mol / L; then 30g of polymer was dissolved in 70g of this organic solution and stirred evenly at 50°C; then, the obtained homogeneous viscous The thick liquid flows along the polytetrafluoroethylene plate, and after cooling, the condensed polymer electrolyte membrane GPE-30 is obtained.

Embodiment 3

[0024] Embodiment 3: lithium perchlorate (LiClO 4 ) was dissolved in propylene carbonate (PC) to prepare an organic solution with a concentration of 1mol / L; then 40g of polymer was dissolved in 60g of this organic solution and stirred evenly at 50°C; then, the obtained homogeneous viscous The thick liquid flows along the polytetrafluoroethylene plate, and after cooling, the condensed polymer electrolyte membrane GPE-40 is obtained.

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Abstract

The invention relates to a polyacrylic ester cross linked polymer gel polymer electrolyte for a lithium ion battery. The cross linked polymer-based P(MAh-AA)-PEG4000 gel polymer electrolyte is technically characterized in that raw materials in a formula comprise 20-50g of polymer P(MAh-AA)-PEG4000 and 80-50g of liquid electrolyte; and the preparation steps are carried out in the following process conditions: lithium perchlorate (LiClO4) is dissolved in carbonic allyl ester (PC) to obtain 1mol / L liquid electrolyte; P(MAh-AA)-PEG4000 is dissolved in the liquid electrolyte at 50DEG C; and the electrolyte flows along a polytetrafluoroethylene sheet and is cooled to obtain condensed polymer electrolyte. The invention has the benefits that the polyacrylic ester cross linked polymer gel polymer electrolyte is prepared, has excellent comprehensive performance and meets the service requirement of the lithium ion battery. The invention has the advantages of low price of required raw materials, more direct and simpler operation process, wide applicability and certain practical popularization significance.

Description

technical field [0001] The invention relates to a polyacrylate cross-linked polymer-based gel polymer electrolyte for a lithium ion battery. Background technique [0002] As an important part of lithium-ion batteries, gel polymer electrolyte has the characteristics of high ion conductivity, good safety performance and easy processing and fabrication. The polymer matrix, an important component in gel polymer electrolytes, has a decisive influence on the performance of the electrolyte. Therefore, the current research on the influence of polymer matrix on the performance of electrolytes is a research hotspot and also a difficulty. Although there are many types of polymers, the ones that can be used as gel polymer electrolyte matrix are limited, and no single polymer has been found to meet all the performance requirements of gel polymer electrolytes. Therefore, based on the idea of ​​molecular design, it is very important to design the composition and structure of existing pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565
CPCY02E60/12Y02E60/10
Inventor 黄韵林元华程小伟
Owner SOUTHWEST PETROLEUM UNIV
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