Electrochemical energy device and manufacturing method thereof

An electrochemical and energy technology, applied in the field of capacitors, can solve the problems of not optimistic application prospects, no increase in capacitance, low decomposition voltage, etc., and achieve superior electrochemical performance and alkali resistance stability, promote migration, and short reaction time Effect

Inactive Publication Date: 2020-01-10
上海元城汽车技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrolyte made of gel is not easy to leak, but the decomposition voltage is low and unstable. It still needs to be fixed by the diaphragm material. At the same time, the capacitance has not improved compared with the liquid electrolyte, so the application prospect is not optimistic.

Method used

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  • Electrochemical energy device and manufacturing method thereof
  • Electrochemical energy device and manufacturing method thereof
  • Electrochemical energy device and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]Dissolve 1g of CS powder in 50ml of 2% acetic acid solution, stir until a transparent and uniform solution; add PDDA aqueous solution according to the mass ratio of CS to PDDA = 1:0.5, and continue stirring to prepare a uniform solution of PDDA, and cast the mixed solution into plastic In a disc, dry naturally to form a film. The film was peeled off and placed in an oven. After physical cross-linking at 120°C for 1 hour, it was soaked in 4% glutaraldehyde-acetone solution and stirred for 1 hour. After that, the film was taken out and fully washed by soaking in deionized water.

[0045] The membrane prepared by the above method was immersed in 2M KOH solution for ion exchange for 24 hours and then taken out, and the KOH adsorbed on the surface of the membrane was repeatedly washed with deionized water to neutrality to obtain a basic anion exchange composite membrane.

Embodiment 2

[0047] Dissolve 1g of CS powder in 50ml of 2% acetic acid solution, stir until a transparent and homogeneous solution; add PDDA aqueous solution according to the mass ratio of CS to PDDA = 1:0.5, and continue stirring to prepare a homogeneous solution of PDDA; the mass ratio of CS to PDDA is 1:0.5 PVA aqueous solution was added to the PDDA uniform solution, stirred for 24 hours to obtain a uniform mixed solution, the mixed solution was cast into a plastic disc, and naturally dried to form a film. The film was peeled off and placed in an oven. After physical cross-linking at 120°C for 1 hour, it was soaked in 4% glutaraldehyde-acetone solution and stirred for 1 hour. After that, the film was taken out and fully washed by soaking in deionized water.

[0048] The membrane prepared by the above method was immersed in 2M KOH solution for ion exchange for 24 hours and then taken out, and the KOH adsorbed on the surface of the membrane was repeatedly washed with deionized water to neu...

Embodiment 3

[0050] Dissolve 1g of CS powder in 50ml of 2% acetic acid solution, stir until a transparent and homogeneous solution; add PDDA aqueous solution according to the mass ratio of CS to PDDA = 1:0.5, and continue stirring to prepare a homogeneous solution of PDDA; the mass ratio of CS to PDDA is 1:1 PVA aqueous solution was added to PDDA uniform solution, stirred for 24 hours to obtain a uniform mixed solution, the mixed solution was cast into a plastic disc, and naturally dried to form a film. The film was peeled off and placed in an oven. After physical cross-linking at 120°C for 1 hour, it was soaked in 4% glutaraldehyde-acetone solution and stirred for 1 hour. After that, the film was taken out and fully washed by soaking in deionized water.

[0051] The membrane prepared by the above method was immersed in 2M KOH solution for ion exchange for 24 hours and then taken out, and the KOH adsorbed on the surface of the membrane was repeatedly washed with deionized water to neutralit...

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Abstract

The invention discloses an electrochemical energy device and a manufacturing method thereof. The electrochemical energy device uses an alkaline anion exchange composite film as a solid electrolyte anda support layer, and the alkaline anion exchange composite film is a quaternized chitosan-polyvinyl alcohol film. The quaternized chitosan-polyvinyl alcohol film is a good all-solid-state electrolyte. A low-cost non-toxic material with high ionic conductivity at an ambient temperature is achieved and good mechanical strength and excellent electrochemical performance are possessed. The quaternizedchitosan-polyvinyl alcohol film is applied to the electrochemical energy device, a problem that a traditional electrolyte is easy to leak is solved, packaging difficulty is reduced, cost is saved toa certain extent, and the device and the method are suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to an electrochemical energy device and a preparation method thereof. Background technique [0002] In recent years, with the development of the global economy, the expansion of the world's total population, and the rapid increase in the market's demand for portable electronic devices and automobiles, global energy consumption and environmental problems have become increasingly serious. The global energy demand will be twice that of today in the middle of this century, and will be more than three times today in 2100, so the development of clean, renewable and sustainable energy (such as solar energy, wind energy, etc.) and price Inexpensive and environmentally friendly energy conversion and storage technologies are great opportunities and challenges in the 21st century. [0003] As a unique electrical energy storage device, supercapacitor is an important bridge connecting second...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/56H01G11/84H01M8/083H01M8/0289C08L5/08C08L29/04C08L39/00C08J5/22
CPCC08J5/2212C08J2305/08C08J2329/04C08J2439/00H01G11/56H01G11/84H01M8/0289H01M8/083Y02E60/50Y02P70/50
Inventor 魏亚南陈领平戴西槐宋俊杰郭存心孟中华
Owner 上海元城汽车技术有限公司
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