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Supercapacitor slurry preparation method

A supercapacitor and slurry technology, applied in capacitors, electrolytic capacitors, circuits, etc., can solve the problems of low consistency of monomer capacitors, time-consuming preparation methods, and difficulty in mixing materials evenly, so as to reduce the scrap of pole pieces and promote electrode The performance of the performance, the effect of improving the uniformity of the material

Active Publication Date: 2011-12-21
SHUANGDENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method takes a long time, the process is not standardized, and because the slurry is always stirred in a state of good fluidity, it is difficult to mix the material evenly, and the slurry is easy to settle, so that the thickness of the slurry on the current collector is not uniform when the slurry is coated. Uniformity, high and low solid content, poor coating uniformity, and ultimately lead to low consistency of single capacitors

Method used

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  • Supercapacitor slurry preparation method
  • Supercapacitor slurry preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] 1. Weighing of raw materials: according to the mass ratio of materials used in the conventional process, weigh the corresponding materials for use, Akg of deionized water, Bkg of binder, Ckg of conductive agent, Dkg of organic solvent, and Ekg of active material.

[0010] 2. Preparation of binder:

[0011] The specific process is as follows:

[0012]

[0013] 3. Slurry preparation:

[0014] The specific process is as follows:

[0015]

[0016]

[0017] 4. Discharge: Take a sample to test the viscosity and solid content of the slurry, and adjust to the target value.

Embodiment 2

[0019] 1. Weighing of raw materials: according to the mass ratio of materials used in the conventional process, weigh the corresponding materials for use, Akg of deionized water, Bkg of binder, Ckg of conductive agent, Dkg of organic solvent, and Ekg of active material.

[0020] 2. Preparation of binder:

[0021] The specific process is as follows:

[0022]

[0023] 3. Slurry preparation:

[0024] The specific process is as follows:

[0025]

[0026]

[0027] 4. Discharge: Take a sample to test the viscosity and solid content of the slurry, and adjust to the target value.

Embodiment 3

[0029] 1. Weighing of raw materials: According to the mass ratio of materials used in the conventional process, weigh the corresponding materials for use. Deionized water Akg, binder Bkg, conductive agent Ckg, organic solvent Dkg, active material Ekg.

[0030] 2. Preparation of binder:

[0031] The specific process is as follows:

[0032]

[0033] 3. Slurry preparation:

[0034] The specific process is as follows:

[0035]

[0036]

[0037] 4. Discharge: Take a sample to test the viscosity and solid content of the slurry, and adjust to the target value.

[0038] In the above embodiments, Example 1 and Example 2 are a dry-mixed wet-mixed method, and Example 3 is a wet-mixed method.

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Abstract

The invention discloses a method for preparing a super capacitor slurry. The slurry with higher dispersion uniformity is prepared through the regulation of a material stirring mode and the improvement of a slurry preparation technology process by adopting the mode of sequential charging and segment stirring. According to the invention, the problems of poor dispersibility, higher dispersion uniformity and the like in the traditional preparation technology of the super capacitor slurry are solved preferably, and the phenomena such as pole piece scraping caused by the material dispersion degree in the subsequent production procedure are reduced, thus the electrode performance is played to a larger extent, the consistency of a monomer capacitor is improved to a certain extent, and the integral performance of the super capacitor is promoted to be improved.

Description

Technical field [0001] The invention belongs to the technical field of chemical power supplies, and specifically relates to a method for preparing super capacitor slurry. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, or supercapacitors for short, are a new type of energy storage element. Because of its high specific power, long cycle life, short charging time, easy installation and wide operating temperature range, coupled with environmental protection, supercapacitors are increasingly being used in various fields. [0003] Mixing is an important process in the production process of supercapacitors, and the degree of uniformity of dispersion is related to the selection of subsequent processes and the overall physical and chemical properties of the supercapacitor. The raw materials of the ultracapacitor slurry include active materials (generally activated carbon, etc.), conductive agents, binders, dispersants and solvents. The traditional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042
CPCY02E60/13
Inventor 陈冰花丁同臣陆亚山
Owner SHUANGDENG GRP
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