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Preparation method and application of electrode sheet

A technology of electrode sheet and conductive agent, which is applied in the field of electronics, can solve the problems of high brittleness and easy breakage of electrode sheets, and achieve the effects of improved liquid absorption, improved flexibility, and excellent conduction effect

Active Publication Date: 2015-11-11
SHENZHEN ZHENHUA FU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a method for preparing an electrode sheet, which solves the technical problem of high brittleness and easy fracture of the electrode sheet in the prior art; and, the application of the prepared electrode sheet in a supercapacitor

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  • Preparation method and application of electrode sheet
  • Preparation method and application of electrode sheet
  • Preparation method and application of electrode sheet

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preparation example Construction

[0022] see figure 1 , figure 1 A flow chart showing a method for preparing an electrode sheet according to an embodiment of the present invention includes the following steps:

[0023] S01, respectively provide activated carbon, conductive agent, carboxymethyl cellulose and binder, the mass percentage of the activated carbon is 60-80%, the mass percentage of conductive agent is 10-30%, carboxymethyl cellulose The mass percentage of the binder is 0.5-5%, and the mass percentage of the binder is 5-10%;

[0024] S02, mixing activated carbon, conductive agent and carboxymethyl cellulose to obtain the first mixture;

[0025] S03, mixing the binder and water to obtain a second mixture;

[0026] S04, under the stirring condition, mix the first mixture and the second mixture, let stand for 2-8 hours, dry, and press to form an electrode sheet.

[0027] Specifically, in step S01, the activated carbon is in the form of powder, the particle size is 0.5-10 μm, and the mass percentage o...

Embodiment 1

[0038] The gac that mass percent composition is 65% is provided respectively, and mass percent composition is 24.5% conductive agent, and mass percent composition is 0.5% carboxymethyl cellulose, and mass percent composition is 10% binding agent (total amount 50g);

[0039] The activated carbon, conductive agent and carboxymethyl cellulose were added to the stirrer and stirred for 2 hours to obtain the first mixture;

[0040] The adhesive was added into 100g of water, and stirred for 1.5h to obtain the second mixture;

[0041] Add the second mixture to the mixer, stir for 2 hours, and then stand for emulsification for 2 hours; put it in a blast drying oven and dry it at 100°C for 6 hours to obtain the electrode sheet precursor; use the electrode sheet precursor The electrode sheet is formed by machine pressing, and the thickness of the electrode sheet is 0.4mm.

[0042] Preparation of supercapacitors:

[0043] Put the electrode sheet and diaphragm into the stainless steel s...

Embodiment 2

[0046] The gac that is 75% by mass percentage is provided respectively, the conductive agent that is 15% by mass percentage, carboxymethyl cellulose that is 5% by mass percentage, and the binding agent that is 5% by mass percentage (total amount 50g);

[0047] The activated carbon, conductive agent and carboxymethyl cellulose were added to the stirrer and stirred for 2.5 hours to obtain the first mixture;

[0048] The adhesive was added into 200g of water, and stirred for 1h to obtain the second mixture;

[0049]Add the second mixture to the mixer, stir for 2.5 hours, and then stand for emulsification for 4 hours; put it in a blast drying oven and dry it at 100°C for 8 hours to obtain the electrode sheet precursor; use the electrode sheet precursor The electrode sheet is formed by machine pressing, and the thickness of the electrode sheet is 0.4mm.

[0050] Preparation of supercapacitors:

[0051] Put the electrode sheet and diaphragm into the stainless steel shell, inject ...

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Abstract

The invention is suitable for the technical field of electronics and provides a preparation method and applications of an electrode plate. The preparation method of the electrode plate comprises the following steps: respectively providing active carbon, a conductive additive, carboxymethylcellulose and a binder; mixing the active carbon, the conductive additive and the carboxymethylcellulose to obtain a first mixture; mixing the binder with water to obtain a second mixture; under an agitating condition, mixing the first mixture with the second mixture, standing the mixtures for 2-8 hours, and drying, pressing and molding the electrode plate. According to the preparation method of the electrode plate, the carboxymethylcellulose (CMC) can enable the mixed size to form stable rubber mass by adding the carboxymethylcellulose, standing and emulsifying the carboxymethylcellulose; layering of the mixed size caused by different specific gravities of each constituent can be prevented; the distribution stability of each constituent in the size is kept, and the flexibility, the tensile strength, the absorbency and the electrical conductivity of the prepared electrode plate are also improved.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to a preparation method and application of an electrode sheet. Background technique [0002] Supercapacitor is a new type of electronic component, which fills the gap between ordinary capacitors and batteries, and has the characteristics of high capacity, high power, safety, and no pollution. Supercapacitor is a breakthrough component to improve and solve the application of electric energy power performance. It has huge application value and market potential in electric vehicles, diesel locomotive starting, electric power, transportation, communication, consumer electronics, aerospace, military fields, etc., and is favored by the world States attach great importance to it. [0003] The production process of button supercapacitors is the most important step in the manufacturing process of supercapacitors. The quality of the electrode sheets directly affects important...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/04
CPCY02E60/13
Inventor 邓梅根丁晓鸿李建辉陈英放
Owner SHENZHEN ZHENHUA FU ELECTRONICS
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