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Gel polymer electrolyte based on polyacrylate crosslinked polymer and preparation method thereof

A polyacrylate, cross-linked polymer technology, applied in circuits, electrical components, secondary batteries, etc., can solve the problems of polyacrylate gel polymer electrolyte film-forming, thermal performance and dimensional stability. Ideal and other issues, to achieve the effect of improving thermal performance and dimensional stability

Inactive Publication Date: 2013-10-09
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 to use a polyacrylate cross-linked polymer as a matrix to prepare gel polymer electrolyte

Method used

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  • Gel polymer electrolyte based on polyacrylate crosslinked polymer 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 cross-linked polymer was dissolved in 80g of this organic solution, and stirred evenly at 50°C; then, the obtained homogeneous The viscous 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 cross-linked polymer was dissolved in 70g of this organic solution, and stirred evenly at 50°C; then, the obtained homogeneous The viscous 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 cross-linked polymer was dissolved in 60g of this organic solution, and stirred evenly at 50°C; then, the obtained homogeneous The viscous 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 gel polymer electrolyte based on polyacrylate crosslinked polymer for lithium ion batteries. The preparation of a P(MMA-MAh)-PEG4000 gel polymer electrolyte based on crosslinked polymer has the following technical characteristics that: the raw material formula comprises 20-50 wt% of polymer P(MMA-MAh)-PEG4000, 80-50 wt% of liquid electrolytes; the process conditions comprise: dissolving lithium perchlorate (LiClO4) in propylene carbonate (PC) to prepare a liquid electrolyte with a concentration of 1 mol / L, dissolving P(MMA-MAh)-PEG4000 in the liquid electrolyte at atemperature below 50 DEG C, flowing on a polyfluortetraethylene plate, and cooling to obtain the gel polymer electrolyte. The beneficial effect is that: a gel polymer electrolyte based on polyacrylate crosslinked polymer is prepared, and the electrolyte has excellent comprehensive performance, and meets the using requirements of lithium ion batteries. The raw materials required by the invention are cheap; the operation process is direct and simple, has extensive applicability, and has certain actual popularization significance.

Description

technical field [0001] The invention relates to a polyacrylate cross-linked polymer-based gel polymer electrolyte for lithium ion batteries and a preparation method. 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0565
CPCY02E60/12Y02E60/10
Inventor 黄韵林元华王煦
Owner SOUTHWEST PETROLEUM UNIV