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Self-healing gel solid electrolyte as well as preparation method and application thereof

A solid-state electrolyte and self-healing technology, which is applied in the direction of electrolyte immobilization/gelation, secondary battery manufacturing, and final product manufacturing, can solve problems such as safety accidents, breakage, and damage, and achieve improved ionic conductivity and high Room temperature ionic conductivity and effect of improving thermal stability

Inactive Publication Date: 2020-12-18
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under long-term use, the electrodes and electrolytes in these flexible devices will inevitably undergo repeated bending, torsion and other mechanical deformations. Long-term deformations will cause damage or even breakage, which will lead to safety accidents in severe cases.

Method used

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  • Self-healing gel solid electrolyte as well as preparation method and application thereof
  • Self-healing gel solid electrolyte as well as preparation method and application thereof
  • Self-healing gel solid electrolyte as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]This embodiment is a preparation method of self-healing gel solid electrolyte, including the following steps:

[0038](1) Measure 50ml deionized water, 10g acrylic acid, 0.704g stearyl methacrylate, 0.139g Fe(NO3)3·6H2O, 1.52g cetyltrimethylammonium bromide and ammonium bromide were mixed with magnetic stirring for 2h.

[0039](2) The mixture prepared in step 1) is bubbled with nitrogen for 10 minutes.

[0040](3) Add 0.037g of potassium persulfate initiator to the mixed solution prepared in step 2), and pour it into a petri dish with magnetic stirring for 30 minutes. Place it in a blast drying oven at 60°C for 2h. Take out the solid electrolyte after polymerization from the petri dish, soak it in 0.5mol / L H2SO4A self-healing gel solid electrolyte is obtained in the solution.

Embodiment 2

[0042]This embodiment is a preparation method of self-healing gel solid electrolyte, including the following steps:

[0043] (1) Measure 50ml deionized water, 10g acrylic acid, 0.704g stearyl methacrylate, 0.139g Fe(NO3)3·6H2O, 1.52g cetyltrimethylammonium bromide and ammonium bromide were mixed with magnetic stirring for 2h.

[0044](2) The mixture prepared in step 1) was bubbled with nitrogen for 10 minutes.

[0045](3) Add 0.037g of potassium persulfate initiator to the mixture prepared in step 2), and pour it into a petri dish with magnetic stirring for 30 minutes. Place in a blast drying oven at 60°C for 2h. Take out the solid electrolyte after polymerization from the petri dish, soak it in 1mol / L H2SO4A self-healing gel solid electrolyte is obtained in the solution.

Embodiment 3

[0047]This embodiment is a preparation method of self-healing gel solid electrolyte, including the following steps:

[0048](1) Measure 50ml deionized water, 10g acrylic acid, 0.704g stearyl methacrylate, 0.139g Fe(NO3)3·6H2O, 1.52g cetyltrimethylammonium bromide and ammonium bromide are mixed with magnetic stirring for 2h.

[0049](2) The mixture prepared in step 1) is bubbled with nitrogen for 10 minutes.

[0050](3) Add 0.037g of potassium persulfate initiator to the mixed solution prepared in step 2), and pour it into a petri dish with magnetic stirring for 30 minutes. Place in a blast drying oven at 60°C for 2h. Take out the solid electrolyte after polymerization from the petri dish, soak it in 2mol / L H2SO4A self-healing gel solid electrolyte is obtained in the solution.

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Abstract

The invention relates to the technical field of solid electrolytes, in particular to a self-healing gel solid electrolyte and a preparation method and application thereof. The invention discloses a self-healing gel solid electrolyte. The self-healing gel solid electrolyte comprises a gel solid polymer and electrolyte; the gel solid polymer is obtained by physically crosslinking an unsaturated organic acid methacrylic acid alcohol ester copolymer and a metal salt. The gel solid polymer is obtained by crosslinking an organic acid methacrylic acid alcohol ester copolymer through the interaction of hydrogen bonds between polymer long chains and ionic bonds between metal salts, and the thermal stability of the gel is improved by a double-crosslinked network structure formed by the copolymer andthe metal salts; The copolymer can better solve the problems of breakage and reconnection, and improves the self-healing performance and mechanical properties of the gel solid electrolyte. Electrolyte anions are used as a proton transport medium in a cross-linked network, so that the ionic conductivity of the gel solid polymer is improved. The self-healing gel solid electrolyte can be applied toa flexible solid energy storage device.

Description

Technical field[0001]The invention relates to the technical field of solid electrolytes, in particular to a self-healing gel solid electrolyte and a preparation method and application thereof.Background technique[0002]With the continuous development of society, people's living standards continue to improve, and the pursuit of quality of life is also constantly improving. Nowadays, people’s daily life is inseparable from electronic equipment, and the requirements for electronic equipment are getting higher and higher. In addition to the requirements of long battery life and safety, they also hope to be more convenient to carry. In recent years, flexible wearable electronic devices, such as electronic sensors, flexible display screens, and flexible health detection devices, have received extensive attention and rapid development. The development of wearable devices has driven the demand for flexible energy storage devices. A series of flexible solid-state energy storage devices includ...

Claims

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Application Information

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IPC IPC(8): C08F220/06C08F220/18C08F2/44C08K5/19C08K3/28C08J3/075C08J3/24H01M10/04
CPCC08F220/06C08F2/44C08K5/19C08K3/28C08J3/075C08J3/24H01M10/04C08J2333/02H01M2300/0085C08F220/1818Y02P70/50
Inventor 谢怡雯张海燕林迎曦王浩伟
Owner GUANGDONG UNIV OF TECH
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