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Method for producing diaphragm of super capacitor

A supercapacitor and diaphragm technology, applied in capacitors, electrolytic capacitors, circuits, etc., can solve the problems of large diaphragm resistance and electrode short circuit, and achieve the effects of good temperature resistance, strong electrochemical corrosion resistance, and simple film production method

Active Publication Date: 2012-08-08
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A thicker separator makes the separator more resistive, and a higher porosity can cause short circuits in the electrodes

Method used

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  • Method for producing diaphragm of super capacitor
  • Method for producing diaphragm of super capacitor
  • Method for producing diaphragm of super capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put 20g of soluble polyimide (FBDA-FAPB) and 120g of solvent dimethylacetamide in a three-necked flask, stir at room temperature for 2 hours, then add 8g of hybrid materials and 0.1ml of concentrated hydrochloric acid, and continue to heat up to 100°C Stir for 48 hours. After the solution is completely mixed, let it cool and stand for 2 hours, and cast it on a clean glass plate to form a 100-micron film. After the solvent evaporates, peel off the film from the glass plate and dry it at 100°C for 4 hours. hours, a 60-micron supercapacitor diaphragm was obtained.

Embodiment 2

[0030] Place 20g of soluble polyimide (6FBPDA-3,3'-TFDB) and 180g of solvent dimethylformamide in a three-necked flask, stir at room temperature for 2 hours, then add 15g of hybrid material and 0.3ml of concentrated hydrochloric acid, and heat up Continue to stir for 48 hours at 100°C. After the solution is completely mixed, cool and let it stand for 2 hours, and cast it on a clean glass plate to form a 120-micron film. After the solvent evaporates, peel off the film from the glass plate. Dry at 150° C. for 4 hours to obtain a 85-micron supercapacitor diaphragm.

Embodiment 3

[0032] Put 30g of soluble polyimide (6FDA-2,2'-DTFODA) and 250g of solvent N methylpyrrolidone into a three-necked flask, heat and stir at 50°C for 2 hours, then add 20g of hybrid material and 0.5ml of concentrated hydrochloric acid, Raise the temperature to 120°C and continue to stir for 72 hours. After the solution is completely mixed, cool and stand for 2 hours. Cast a 200-micron film on a clean glass plate. After the solvent evaporates, peel off the film from the glass plate. Dry at 180°C for 12 hours to obtain a 150 micron supercapacitor separator.

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Abstract

A method for producing a diaphragm of a super capacitor belongs to the technical field of ion channel membranes. The method is characterized in that dimethylacetamide is used for dissolving soluble polyimide and hybrid materials having ion channels; the tape casting method is used for forming a film on a smooth solid surface; and the film is heated, so that the hybrid materials are subjected to a sol-gel reaction to form iron transmission channels, and the hybrid materials and the polyimide form the diaphragm of the super capacitor. The novel diaphragm, which has good ion transmission performance and small resistance, of the supper capacitor can be obtained through the method, and the defect of high porosity of present diaphragms is eliminated. The method has the advantages of being simple in producing process and easy to magnify.

Description

field of invention [0001] The invention relates to the technical field of ion channel membrane preparation, in particular to a method for preparing an ion channel membrane used for supercapacitors. Background technique [0002] With the rapid development of the economy, the human demand for energy is increasing day by day, while the environmental pressure caused by the massive consumption of fossil energy is becoming increasingly prominent. Conservation of fossil energy, research and development, and large-scale utilization of renewable energy have become important strategies for energy security and sustainable development of countries around the world. As an emerging energy storage device for alternative energy, supercapacitors play a huge role in the field of new energy. [0003] Supercapacitor (Supercapacitor) is a new energy storage device that first appeared in the United States in the 1960s and 1970s, and gradually entered the market in the 1980s. This new type of en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/02
CPCY02E60/13
Inventor 王丽华刘帅刘艳花吴杰刘必前
Owner INST OF CHEM CHINESE ACAD OF SCI
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