Gel electrolyte, preparation method thereof, battery using gel electrolyte and preparation method thereof

A gel electrolyte and battery technology, which is applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, electrolytes, etc., can solve problems such as low initial voltage and discharge capacity, arbitrary shape restrictions, and poor electrical performance. Achieve superior electrical performance, improve performance, and improve overall electrical performance

Inactive Publication Date: 2010-08-18
BASF BATTERY MATERIALS SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid lithium ion battery has good high charge and discharge rate and low temperature performance, but its disadvantages are: the liquid electrolyte may leak, which will endanger the safety of the battery; arbitrary shape
However, this method is complex and will cause environmental pollution
[0003] The application number is: 03158361.X, the patent name is: "Lithium-ion battery gel electrolyte formula and the method for preparing g

Method used

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  • Gel electrolyte, preparation method thereof, battery using gel electrolyte and preparation method thereof
  • Gel electrolyte, preparation method thereof, battery using gel electrolyte and preparation method thereof
  • Gel electrolyte, preparation method thereof, battery using gel electrolyte and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The weight percentage content of each constituent of gel electrolyte is:

[0023] Triethylene glycol dimethacrylate: 1.2wt%

[0024] Methyl methacrylate: 8wt%

[0025] γ-(methacryloyloxy)propyltrioxysilane: 1.2wt%

[0026] Azobisisobutyronitrile: 0.06wt%

[0027] Azobisisobutyronitrile: 0.06wt%

[0028] Non-aqueous solvent containing lithium salt: 0.9M LiPF 6 and 0.1M LiB(C 2 o 4 ) 2 , EC / DMC=3:7, weight ratio: 89.54%.

[0029]The pre-prepared non-aqueous solvent containing lithium salt is divided into two parts, and then the initiator azobisisobutyronitrile is added to one part and stirred evenly to obtain the gel electrolyte component A for lithium batteries; at the same time, various monomers, Add another portion of the coupling agent and stir evenly to obtain component B of the gel electrolyte solution for lithium batteries. Finally, mix the gel electrolyte component A and the gel electrolyte component B in a ratio of one to one by weight. The mixed solutio...

Embodiment 2

[0034] The weight percentage content of each constituent of gel electrolyte is:

[0035] Triethylene glycol dimethacrylate: 3wt%

[0036] Methyl methacrylate: 1wt%

[0037] γ-(Methacryloyloxy)propyltrioxysilane: 2.5wt%

[0038] Azobisisobutyronitrile: 0.06wt%

[0039] Non-aqueous solvent containing lithium salt: 1.0M LiClO4, PC / EMC / DEC=4:3:3, weight ratio: 93.44%. This is a single battery, no mixing salts.

[0040] The pre-prepared non-aqueous solvent containing lithium salt is divided into two parts, and then the initiator azobisisobutyronitrile is added to one part and stirred evenly to obtain the gel electrolyte component A for lithium batteries; at the same time, various monomers, Add another portion of the coupling agent and stir evenly to obtain component B of the gel electrolyte solution for lithium batteries. Finally, mix the gel electrolyte component A and the gel electrolyte component B in a ratio of one to one by weight. The mixed solution is a colorless or lig...

Embodiment 3

[0048] The weight percentage content of each constituent of gel electrolyte is:

[0049] Triethylene glycol dimethacrylate: 2.3 wt%

[0050] Methyl methacrylate: 0.8wt%

[0051] γ-(methacryloyloxy)propyltrioxysilane: 1.9wt%

[0052] Azobisisobutyronitrile: 0.04wt%

[0053] Non-aqueous with lithium salt: 0.9M LiPF 6 and 0.1M LiB(C 2 o 4 ) 2 , EC / EMC / DEC=4:3:3, weight ratio: 94.96%.

[0054] The pre-prepared non-aqueous solvent containing lithium salt is divided into two parts, and then the initiator azobisisobutyronitrile is added to one part and stirred evenly to obtain the gel electrolyte component A for lithium batteries; at the same time, various monomers, Add another portion of the coupling agent and stir evenly to obtain component B of the gel electrolyte solution for lithium batteries. Finally, the gel electrolyte component A and the gel electrolyte component B are mixed in a weight ratio of one to one. The mixed solution is a colorless or light yellow transparen...

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Abstract

The invention discloses a gel electrolyte, a preparation method thereof, a battery using the gel electrolyte and a preparation method thereof. The gel electrolyte comprises a nonaqueous solvent and a gelator, wherein the nonaqueous solvent comprises lithium salts, and the gelator comprises polyethyleneglycol compounds with unsaturated double bonds, ester monomers with unsaturated double bonds, silane coupling agents and thermal initiators. The gel electrolyte is in double-ingredient package, wherein the weight ratio of the ingredient A and the ingredient B of the gel electrolyte is 1/1. The stirred uniform liquid is injected into a dried battery to be placed for 16 to 24 hours, so the gel electrolyte is sufficiently distributed inside the battery, and a gel electrolyte battery is obtained through in-situ thermal polymerization. Compared with the prior art, the invention uses a simple gel electrolyte preparation method, improves the safety performance for using the gel electrolyte battery on the premise of not changing the preparation technology and not controlling the preparation cost of the battery using the gel electrolyte, and ensures that a lithium battery has good electrochemical performance.

Description

technical field [0001] The application relates to a gel electrolyte and a preparation method thereof, a battery using the gel electrolyte and a preparation method thereof. Background technique [0002] Lithium-ion batteries are gradually replacing lead-acid batteries, Ni-Cd and MH-Ni batteries due to their higher volume specific energy, weight specific energy and good environmental protection, and are widely used in portable electronic devices such as mobile phones and notebook computers , has a good application prospect. According to the different electrolytes used in lithium-ion batteries, they can be divided into liquid lithium-ion batteries and polymer lithium-ion batteries. Liquid lithium ion battery has good high charge and discharge rate and low temperature performance, but its disadvantages are: the liquid electrolyte may leak, which will endanger the safety of the battery; the arbitrariness of its shape. Polymer lithium-ion batteries use polymer electrolyte membr...

Claims

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Application Information

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IPC IPC(8): H01M10/056H01M10/052H01M10/058H01M4/58H01M10/0565H01M10/0567H01M10/0568H01M10/0569H01M50/609
CPCH01M10/058H01M6/22H01M10/0525H01M2300/0085H01M2300/0091H01M10/052H01M10/0565H01G11/56Y02E60/122Y10T29/49108Y02E60/10Y02P70/50H01M50/609H01M10/0568Y02E60/13H01M10/056
Inventor 袁芳谢松马丁·佩恩
Owner BASF BATTERY MATERIALS SUZHOU
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