Recyclable self-repairing gel-state electrolyte as well as preparation method and application thereof

A technology of gel state and electrolyte, which is applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, sustainable manufacturing/processing, etc., can solve the problems of high environmental requirements, harsh environments, single performance, etc. The effect of safety and service life

Active Publication Date: 2021-07-20
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the technical problems of the existing materials and methods, such as harsh preparation methods, single performance, or high

Method used

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  • Recyclable self-repairing gel-state electrolyte as well as preparation method and application thereof
  • Recyclable self-repairing gel-state electrolyte as well as preparation method and application thereof
  • Recyclable self-repairing gel-state electrolyte as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] (1) Mix the molar 1: 1 DGEBA and PEGDGE stir mix.

[0029] (2) 2-AFD was added to the solution of (1) and the epoxy resin mass ratio 1: 2 of PEG200 and 1: 2, stirred at 90 ° C.

[0030] (3) The resulting solution obtained (1) is cast on the polytetrafluoroide plate, placed around the gasket, placing the other polytetrafluoroide plate on the gasket, forming a sandwich structure, placing it in a blast oven In 130 ° C heating for 2 hours, heating at 150 ° C for 2 hours, the film was formed, and the film was placed in the deionized water for three days, dried to obtain an unactivated electrolyte.

[0031] (4) Transfer the film to the glove box, soaked the electrolyte (electrolyte is mixed solution of dimethyl carbonate, methyl carbonate and ethylene carbonate), and the mass ratio of dimethyl carbonate: methyl carbonate : Vinyl carbonate = 1: 1: 1, concentration 1 m) 24 hours. The final resulting gel polymer electrolyte.

Example Embodiment

[0032] Example 2

[0033] (1) Mix the molar 1: 9 DGEBA and PEGDGE mixed.

[0034] (2) 2-AFD was added to the solution of (1) and the epoxy resin mass ratio 1: 2 of PEG200 and 2: 1, stirred at 90 ° C.

[0035] (3) The resulting solution obtained (1) is cast on the polytetrafluoroide plate, placed around the gasket, placing the other polytetrafluoroide plate on the gasket, forming a sandwich structure, placing it in a blast oven In 130 ° C heating for 2 hours, heating at 150 ° C for 2 hours, the film was formed, and the film was placed in the deionized water for three days, dried to obtain an unactivated electrolyte.

[0036] (4) Transfer the film to the glove box, soaked the electrolyte (electrolyte is mixed solution of dimethyl carbonate, methyl carbonate and ethylene carbonate), and the mass ratio of dimethyl carbonate: methyl carbonate : Vinyl carbonate = 1: 1: 1, concentration 1 m) 24 hours. The final resulting gel polymer electrolyte.

Example Embodiment

[0037] Example 3

[0038] (1) Mix the molar 1: 9 DGEBA and PEGDGE mixed.

[0039] (2) 2-AFD was added to the solution (1) obtained and epoxy mass ratio 2: 1 of PEG200 and 2: 1 of 2: 1, stirring mixed at 90 ° C.

[0040] (3) The resulting solution obtained (1) is cast on the polytetrafluoroide plate, placed around the gasket, placing the other polytetrafluoroide plate on the gasket, forming a sandwich structure, placing it in a blast oven In 130 ° C heating for 2 hours, heating at 150 ° C for 2 hours, the film was formed, and the film was placed in the deionized water for three days, dried to obtain an unactivated electrolyte.

[0041] (4) Transfer the film to the glove box, soaked the electrolyte (electrolyte is mixed solution of dimethyl carbonate, methyl carbonate and ethylene carbonate), and the mass ratio of dimethyl carbonate: methyl carbonate : Vinyl carbonate = 1: 1: 1, concentration 1 m) 24 hours. The final resulting gel polymer electrolyte.

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Abstract

The invention relates to a recoverable self-repairing gel-state electrolyte and a preparation method and application thereof, and solves the technical problems of harsh environment requirement, single performance or higher use environment requirement of the preparation method of the existing electrolyte, the recoverable self-repairing gel-state electrolyte contains epoxy resin and a cross-linking agent, the epoxy resin is one or a combination of more of DGEBA, PEGDGE, DGEBF, DGEBS, EPS25 and EPS70; and the cross-linking agent is one or a combination of more of 4-AFD, 2-AFD, DTDA, MPD, DETA, DDM and IPD. The invention also provides a preparation method and application thereof. The method can be applied to the field of preparation of battery materials.

Description

technical field [0001] The invention relates to a battery material and its preparation method and application, in particular to a recyclable self-repairing gel state electrolyte and its preparation method and application. Background technique [0002] With the development of society, the market has higher requirements for the energy density of energy storage equipment. Due to the high specific capacity, low electrode potential, and low density of lithium metal, lithium metal batteries are considered to be ideal candidates for next-generation batteries. However, the uncontrollable growth of lithium dendrites will cause the battery to short circuit, resulting in the burning of the liquid electrolyte and the explosion of the battery. Compared with liquid electrolytes, quasi-solid electrolytes can inhibit the growth of lithium dendrites and play an important role in improving battery safety. [0003] In recent years, the research of self-healing materials has attracted more an...

Claims

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Application Information

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IPC IPC(8): H01M10/0565H01M10/052H01M10/058
CPCH01M10/052H01M10/0565H01M10/058Y02P70/50
Inventor 兰金叻孙卓凡杨小平于运花
Owner BEIJING UNIV OF CHEM TECH
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