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Polyarylether/ hydrophilic resin composite diaphragm for supercapacitor and preparation method of diaphragm

A technology of hydrophilic resin and supercapacitor, which is applied in the manufacture of hybrid capacitor separators and hybrid/electric double layer capacitors, etc., and can solve the problem of low ion conductivity

Active Publication Date: 2014-10-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ionic conductivity of the polymer electrolyte at room temperature is low due to the low liquid absorption

Method used

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  • Polyarylether/ hydrophilic resin composite diaphragm for supercapacitor and preparation method of diaphragm
  • Polyarylether/ hydrophilic resin composite diaphragm for supercapacitor and preparation method of diaphragm
  • Polyarylether/ hydrophilic resin composite diaphragm for supercapacitor and preparation method of diaphragm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Preparation of polyarylene ether / hydrophilic resin composite diaphragm:

[0041] Weigh 0.7500 g of bromomethyl polyaryl ether sulfone into a 50 mL conical flask, add 5 mL of N,N-dimethylacetamide, and mechanically stir for 4 hours to obtain a bromomethyl polyaryl ether sulfone solution; weigh at the same time 0.2500g of polyvinylpyrrolidone with an average molecular weight of 58000 was placed in a 50mL Erlenmeyer flask, 5mL of N,N-dimethylacetamide was added, and mechanically stirred for 4 hours to obtain a hydrophilic resin solution; the bromomethyl polyaryl ether sulfone The solution was mixed with the hydrophilic resin solution and mechanically stirred for 8 hours to mix the two solutions uniformly to obtain a mixed solution of bromomethyl polyaryl ether sulfone / hydrophilic resin. The mixed solution was cast on a clean and flat surface of the glass plate. Drying in a vacuum oven at 60°C, 80°C, and 100°C respectively for 8 hours, and then vacuum drying at 120°C to ob...

Embodiment 2

[0048] Change the mass of bromomethyl polyaryl ether sulfone in step (1) of Example 1 to 0.5000g, and dissolve it in 5mL N,N-dimethylacetamide; the mass of polyvinylpyrrolidone with a weight average molecular weight of 58,000 becomes 0.5000 g, dissolved in 5mL N,N-dimethylacetamide; other steps are as described in Example 1, to obtain a laminated supercapacitor.

Embodiment 3

[0050] The mass of bromomethyl polyaryl ether sulfone in the step (1) of Example 1 was changed to 0.2500g, which was dissolved in 5mL N,N-dimethylacetamide; the mass of polyvinylpyrrolidone with a weight average molecular weight of 58000 was changed to 0.7500g , Dissolved in 5mL N,N-dimethylacetamide; other steps are as described in Example 1 to obtain a laminated supercapacitor.

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Abstract

The invention relates to a polyarylether / hydrophilic resin composite diaphragm for a supercapacitor and a preparation method of the diaphragm, which belongs to the technical field of the super-capacitor. The preparation method is characterized by comprising the steps: blending a brooethyl polyarylether solution with a hydrophilic resin solution, casting the mixed solution on a clean and tidy glass plate, and drying the glass plate in a vacuum drying box so as to form a membrane on the glass plate; and ammoniumizing and alkalizing the obtained brooethyl polyarylether / hydrophilic resin composite membrane, and cleaning the residual alkaline liquid in the membrane by utilizing deionized water to obtain the polyarylether / hydrophilic resin composite diaphragm. The supercapacitor manufactured by adopting the polyarylether / hydrophilic resin composite diaphragm prepared through the method is high in electrolyte adsorption volume, low in contact resistance, high in ion conductivity and high in mass specific capacity; moreover, the large weight and large size of the single supercapaictor caused by vast electrolyte can be avoided, the safety of the supercapacitor is improved, an assembling space can be reduced, and the potential application value is high in the fields such as electronic devices and hybrid electric vehicle.

Description

Technical field [0001] The invention belongs to the technical field of supercapacitors, and specifically relates to a polyarylether / hydrophilic resin composite diaphragm for supercapacitors and a preparation method thereof. Background technique [0002] The emergence and development of new energy has promoted the improvement of chemical power supply technologies such as lithium-ion batteries, fuel cells, and super capacitors. Supercapacitors are a new type of energy storage element between secondary batteries and traditional electrostatic capacitors. Due to their high power density, long cycle life, and no pollution to the environment, they are used in electronics, communications, transportation and aerospace. The field has great application value and prospects. However, the current industrial applications of supercapacitors are still dominated by liquid electrolytes. A large amount of liquid electrolyte makes the volume of supercapacitors increase, and there are safety problems...

Claims

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Application Information

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IPC IPC(8): C08J7/12C08J5/18C08L81/06C08L71/08C08L71/02C08L39/06H01G11/52H01G11/84
CPCY02E60/13
Inventor 王贵宾霍鹏飞卢春华张兴瑞张淑玲姜振华
Owner JILIN UNIV
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