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Preparation method of three-dimensional interconnected multistage macroporous structure gel polymer electrolyte

A gel polymer and three-dimensional interconnection technology, applied in the field of energy storage, can solve the problem of low ion conductivity, achieve broad application prospects, excellent elongation, and improve water retention performance

Pending Publication Date: 2022-07-22
SHENYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] This application provides a method for preparing a three-dimensional interconnected multi-level macroporous structure gel polymer electrolyte, which can solve the problem of low ion conductivity of the existing gel electrolyte

Method used

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  • Preparation method of three-dimensional interconnected multistage macroporous structure gel polymer electrolyte
  • Preparation method of three-dimensional interconnected multistage macroporous structure gel polymer electrolyte
  • Preparation method of three-dimensional interconnected multistage macroporous structure gel polymer electrolyte

Examples

Experimental program
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Embodiment 1

[0034] (1) Preparation of sulfobetaine methacrylate monomer: after mixing 0.01mol 1,3-propane sultone and 0.05mol acetonitrile uniformly, add to 0.01mol dimethylaminoethyl methacrylate and 0.05mol acetonitrile The mixture was stirred at 20 °C for 24 h, and then allowed to stand for 24 h to obtain a white precipitate, which was then repeatedly filtered and centrifuged with acetonitrile and acetone to obtain sulfobetaine methacrylate monomer;

[0035] (2) Preparation of polyvinyl alcohol / chitosan solution: add 0.2 mmol of chitosan and 0.4 mmol of polyvinyl alcohol to 20 mL of 0.6 mol / L phytic acid solution, and keep stirring at 90 °C for 1 h to obtain a uniform polyvinyl alcohol / chitosan solution;

[0036] (3) Preparation of polyvinyl alcohol / chitosan / acrylamide-sulfobetaine methacrylate copolymer gel [PVA / CS / P(AM-co-SBMA)]: take 10 mL of the gel prepared in step (2) The obtained polyvinyl alcohol / chitosan solution was successively added with 0.05 mol of acrylamide and 0.01 mmo...

Embodiment 2

[0039] (1) Preparation of sulfobetaine methacrylate monomer: after mixing 0.01mol 1,3-propane sultone and 0.5mol acetonitrile uniformly, add to 0.01mol dimethylaminoethyl methacrylate and 0.5mol acetonitrile The mixture was stirred at 20°C for 12h, and then allowed to stand for 24h to obtain a white precipitate, which was then repeatedly filtered and centrifuged with acetonitrile and acetone to obtain sulfobetaine methacrylate monomer;

[0040] (2) Preparation of polyvinyl alcohol / chitosan solution: add 0.4 mmol chitosan and 0.8 mmol polyvinyl alcohol to 30 mL of 0.4 mol / L phytic acid solution, and keep stirring at 80 °C for 2 h to obtain a uniform polyvinyl alcohol / chitosan solution;

[0041] (3) Preparation of polyvinyl alcohol / chitosan / acrylamide-sulfobetaine methacrylate copolymer gel [PVA / CS / P(AM-co-SBMA)]: take 10 mL of the gel prepared in step (2) The obtained polyvinyl alcohol / chitosan solution was successively added with 0.05 mol of acrylamide and 0.01 mmol of sulfob...

Embodiment 3

[0044] (1) Preparation of sulfobetaine methacrylate monomer: after mixing 0.01mol 1,3-propane sultone and 0.5M acetonitrile uniformly, add to 0.01mol dimethylaminoethyl methacrylate and 0.5mol acetonitrile The mixture was stirred at 20°C for 12h, and then allowed to stand for 24h to obtain a white precipitate, which was then repeatedly filtered and centrifuged with acetonitrile and acetone to obtain sulfobetaine methacrylate monomer;

[0045] (2) Preparation of polyvinyl alcohol / chitosan solution: add 0.8 mmol chitosan and 1.2 mmol polyvinyl alcohol to 10 mL of 0.8 mol / L phytic acid solution, and keep stirring at 75 °C for 3 h to obtain a uniform polyvinyl alcohol / chitosan solution;

[0046] (3) Preparation of polyvinyl alcohol / chitosan / acrylamide-sulfobetaine methacrylate copolymer gel [PVA / CS / P(AM-co-SBMA)]: take 10 mL of the gel prepared in step (2) The obtained polyvinyl alcohol / chitosan solution was successively added with 0.05 mol of acrylamide and 0.01 mmol of sulfobet...

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Abstract

The invention provides a preparation method of a three-dimensional interconnected multistage macroporous structure gel polymer electrolyte, which comprises the following steps: (1) uniformly mixing 1, 3-propane sultone and acetonitrile, adding the mixture into a mixture of dimethylaminoethyl methacrylate and acetonitrile to obtain a white precipitate, and repeatedly carrying out suction filtration and centrifugal washing with acetonitrile and acetone to obtain a gel polymer electrolyte; a methacrylic acid sulfobetaine monomer is obtained; (2) adding chitosan and polyvinyl alcohol into the phytic acid solution to obtain a polyvinyl alcohol / chitosan solution; (3) taking the polyvinyl alcohol / chitosan solution in the step (2), adding acrylamide, a methacrylic acid sulfobetaine monomer, N, N-methylene bisacrylamide and ammonium persulfate, uniformly mixing, and then casting into a mold to form gel; and (4) the dried gel is subjected to vacuum soaking, the hydrogel electrolyte with ultrahigh ionic conductivity is obtained, particularly, the ionic conductivity in a 6 mol / L KOH electrolyte is as high as 2.48 S / cm, and the ionic conductivity in a 1 mol / L H2SO4 electrolyte is as high as 1.40 S / cm.

Description

technical field [0001] The present application relates to the technical field of energy storage, and in particular, to a preparation method of a three-dimensional interconnected multi-level macroporous structure gel polymer electrolyte. Background technique [0002] In recent years, flexible, lightweight, and safe energy storage devices have received high attention due to their high compatibility with various portable and wearable electronic devices. Solid-state supercapacitors (SCs) have become one of the mainstream energy storage devices due to their high power density, fast charge-discharge rate, long service life, and safe operation. Solid-state supercapacitors require electrolytes with low electronic conductivity and high ionic conductivity at room temperature. [0003] Gel polymer electrolyte (GPE) is one of the solid polymer electrolytes with higher ionic conductivity, which has neither the risk of electrolyte leakage nor the toxicity of aqueous electrolytes or the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08J9/28C08L29/04C08L5/08C08L33/26C08F220/56C08F220/38C08F222/38H01G11/56
CPCC08J3/075C08J9/28C08F220/56H01G11/56C08J2329/04C08J2405/08C08J2433/26C08F220/387C08F222/385
Inventor 侯朝霞王悦王旭丹孔佑健洪忱王灏然高旭
Owner SHENYANG UNIV