Production for gel polymer electrolyte

A gel polymer and electrolyte technology, applied in organic electrolyte batteries, non-aqueous electrolyte batteries, circuits, etc., can solve the problems of serious battery charge and discharge cycle attenuation, poor electrochemical stability, and complicated preparation methods, and achieve low cost , good electrochemical stability and simple preparation process

Active Publication Date: 2005-07-27
SHENZHEN CAPCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] a) The preparation method is complex, the process requirements are high, and the production efficiency is low;
[0008] b) Raw materials are expensive and manufacturing costs are high;
[0009] c) The electrochemical stability is poor, and the battery charge and discharge cycle attenuation is serious;
[0010] d) The mechanical strength is not high

Method used

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  • Production for gel polymer electrolyte
  • Production for gel polymer electrolyte
  • Production for gel polymer electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Prepare monomer mixture: mix 0.48g ethylene glycol diacrylate and 0.72g tetraethylene glycol dimethacrylate to prepare monomer mixture;

[0032] (2) Preparation of gel polymer electrolyte precursor: monomer mixture, 0.1g thermal initiator di-o-toluyl peroxide, 18.7g liquid lithium-ion battery electrolyte solution (LiN(CF 3 SO 2 ) 2 (1.0M) / EC:DMC:VC (volume ratio 2:2:1)) mixed evenly;

[0033] (3) Vacuumizing and sealing treatment: use a vacuum liquid injection device to inject the prepared gel polymer electrolyte precursor into the semi-finished battery including the positive and negative electrodes and the insulating resin film with a network structure, and then the semi-finished battery Vacuum and seal inside;

[0034] (4) Thermal polymerization reaction: Put the semi-finished battery into an oven at a constant temperature of 80°C for 60 minutes. After the reaction is finished, the semi-finished battery is cooled to room temperature, and the gel polymer electr...

Embodiment 2

[0039] (1) Prepare monomer mixture: mix 0.5g ethylene glycol dimethacrylate and 0.7g tetraethylene glycol dimethacrylate to prepare monomer mixture;

[0040](2) Preparation of the gel polymer electrolyte precursor: the monomer mixture, 0.1g thermal initiator azobisisobutyronitrile, 18.7g liquid lithium-ion battery electrolyte solution (LiBF 4 (1.0M) / EC:DEC (volume ratio 1:1)) mixed evenly;

[0041] (3) Vacuumizing and sealing treatment: use a vacuum liquid injection device to inject the prepared gel polymer electrolyte precursor into the semi-finished battery including the positive and negative electrodes and the insulating resin film with a network structure, and then the semi-finished battery Vacuum and seal inside;

[0042] (4) Thermal polymerization reaction: Put the semi-finished battery into an oven at a constant temperature of 60°C for 120 minutes. After the reaction is finished, the semi-finished battery is cooled to room temperature, and the gel polymer electrolyte ...

Embodiment 3

[0044] (1) Prepare monomer mixture: mix 0.2g tetraethylene glycol dimethacrylate and 1.8g decaethylene glycol dimethacrylate to prepare monomer mixture;

[0045] (2) Preparation of gel polymer electrolyte precursor: monomer mixture, 0.3g thermal initiator diisopropyl peroxydicarbonate, 17.7g liquid lithium ion electrolyte solution (LiCF 3 SO 3 (1.0M) / EC:EMC:VC (volume ratio 2:2:1)) mixed evenly;

[0046] (3) Vacuumizing and sealing treatment: use a vacuum liquid injection device to inject the prepared gel polymer electrolyte precursor into the semi-finished battery including the positive and negative electrodes and the insulating resin film with a network structure, and then the semi-finished battery Vacuum and seal inside;

[0047] (4) Thermal polymerization reaction: Put the semi-finished battery into an oven at a constant temperature of 100°C for 40 minutes. After the reaction is finished, the semi-finished battery is cooled to room temperature, and the gel polymer elect...

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Abstract

The method includes following step: two monomers are mixed according to the ratio of 1.0 to 1.0-9.0; then it mixes with thermal booster and liquid lithium ion battery solution to form the fore body of gel polymer dielectric; the fore body is injected into half finished battery. the half finished battery is vacuumized and sealed; the half finished battery is made thermal polymerization reaction, and the gel polymer dielectric is obtained.

Description

technical field [0001] The invention relates to the technical field of polymer lithium ion batteries, in particular to a method for preparing a polymer lithium ion battery gel polymer electrolyte. Background technique [0002] Liquid lithium-ion batteries have been widely used in many fields such as mobile communications and electronic devices, but because the positive and negative electrodes and separators of liquid lithium-ion batteries are soaked in electrolyte solutions, there are relatively many electrolyte solutions, so its current There are still many problems, such as: the manufacturing process is relatively complicated, especially the electrolyte solution uses flammable organic solvents and corrosive electrolyte salts, which makes the battery prone to quality problems such as gas swelling and leakage, resulting in the use of electronic batteries using batteries. Electrical appliances are corroded and damaged, and accidents such as explosions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/16H01M10/40
CPCY02E60/122
Inventor 周震涛陈超
Owner SHENZHEN CAPCHEM TECH
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