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Novel gel polymer electrolyte with interpenetrating network structure and preparation method and application thereof

A technology of interpenetrating network structure and gel electrolyte, which is applied in the field of gel polymer electrolyte and its preparation, can solve the problems of not being able to adapt to large-scale production, fast charge and discharge performance, and poor low temperature performance

Inactive Publication Date: 2012-06-27
CHINA ZHEJIANG GREAT SOUTHEAST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the existing gel polymer electrolytes, which have poor fast charge and discharge performance and low temperature performance and cannot be adapted to large-scale production, the present invention provides a new type of gel polymer electrolyte with good fast charge and discharge performance and low temperature performance, which is suitable for large-scale production. Gel polymer electrolyte with interpenetrating network structure and its preparation method and application

Method used

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  • Novel gel polymer electrolyte with interpenetrating network structure and preparation method and application thereof
  • Novel gel polymer electrolyte with interpenetrating network structure and preparation method and application thereof
  • Novel gel polymer electrolyte with interpenetrating network structure and preparation method and application thereof

Examples

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Embodiment 1

[0064] A novel gel electrolyte with an interpenetrating network structure, the mass percentage of each component in the gel electrolyte is:

[0065] Unsaturated ester monomer: 0-10%;

[0066] Cross-linking agent: 2-8%;

[0067] Polymer matrix: 0-10%;

[0068] Thermal initiator: 0.5% to 1%;

[0069] Lithium salt electrolyte: 80% to 90%;

[0070] Wherein, the contents of the unsaturated ester monomer and the polymer matrix are different from zero at the same time.

[0071] In this embodiment, in the lithium salt electrolyte, the lithium salt concentration is 0.5mol L -1 .

[0072] The unsaturated double-bond ester monomer is methyl methacrylate, and its mass percentage is 10%.

[0073] The cross-linking agent is polyethylene glycol di(meth)acrylate, and its mass percentage is 2%.

[0074] The mass percentage of the polymer matrix is ​​0.

[0075] The thermal initiator is benzoyl peroxide, and its mass percent content is 0.5%.

[0076] The liquid organic solvent in the l...

Embodiment 2

[0078] In this embodiment, in the lithium salt electrolyte, the lithium salt concentration is 0.8mol L -1 .

[0079] The unsaturated double-bond ester monomer is methyl acrylate, and its mass percentage is 5%.

[0080] The cross-linking agent is polyethylene glycol di(meth)acrylate, and its mass percentage is 3%.

[0081] The polymer matrix is ​​polyethylene oxide, and its mass percentage is 8%.

[0082] The thermal initiator is azobisisobutyronitrile, and its mass percent content is 0.7%.

[0083] The liquid organic solvent in the lithium salt electrolyte is diethyl carbonate; the lithium salt in the lithium salt electrolyte is LiClO 4 . The mass percent content of the lithium salt electrolyte is 83.3%.

[0084] All the other schemes of this embodiment are the same as in Embodiment 1.

Embodiment 3

[0086] In this embodiment, in the lithium salt electrolyte, the lithium salt concentration is 1.0mol L -1 .

[0087] The unsaturated double-bond ester monomer is ethyl methacrylate, and its mass percentage is 1%.

[0088] The cross-linking agent is polyethylene glycol di(meth)acrylate, and its mass percentage is 3%.

[0089] The polymer matrix is ​​polyvinyl chloride, and its mass percentage is 5%.

[0090] The thermal initiator is azobisisobutyronitrile, and its mass percent content is 0.8%.

[0091] The liquid organic solvent in the lithium salt electrolyte is dimethyl carbonate; the lithium salt in the lithium salt electrolyte is LiN(CF 3 5O 2 ) 2 . The mass percent content of the lithium salt electrolyte is 88.2%.

[0092] All the other schemes of this embodiment are the same as in Embodiment 1.

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Abstract

The invention discloses a novel gel electrolyte with an interpenetrating network structure, wherein the components in the gel electrolyte are as follows in percentage composition: 0-10% of unsaturated ester monomer, 2-8% of cross-linking agent, 0-10% of polymer, 0-10% of substrate, 0.5-1% of thermal initiator and 80-90% of lithium salt electrolyte, wherein the content of the unsaturated ester monomer and the polymer substrate are not zero simultaneously; and the invention also discloses a preparation method and an application for the gel electrolyte with the interpenetrating network structure. The invention provides the novel gel electrolyte with the interpenetrating network structure, which is provided with good quick charge-discharge performances and low-temperature performances and suitable for a large-scale production, the preparation method and the application thereof.

Description

technical field [0001] The invention relates to a gel polymer electrolyte, in particular to a gel polymer electrolyte suitable for polymer lithium-ion batteries, a preparation method and application thereof. Background technique [0002] Polymer lithium-ion batteries (also known as polymer lithium batteries) have many obvious advantages such as high energy density, smaller size, ultra-thin, lightweight and high safety. In terms of shape, lithium polymer batteries have ultra-thin characteristics, and can be made into batteries of any shape and capacity to meet the needs of various products; in terms of safety, the flexibility of polymer electrolytes greatly improves the charging and discharging of electrodes. The ability to withstand pressure during the process reduces the reactivity with the electrodes, is not easy to corrode, avoids internal pressure, and reduces the possibility of explosion. At the same time, the polymer lithium-ion battery uses a colloidal electrolyte tha...

Claims

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Application Information

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IPC IPC(8): H01M10/0565C08F290/06C08F283/06C08F259/04C08F259/08C08F283/00C08F271/02C08F291/12C08F291/04
CPCY02E60/12Y02E60/10
Inventor 黄水寿梅铜简郭加义陈传福
Owner CHINA ZHEJIANG GREAT SOUTHEAST GRP
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