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Super capacitor electrode material and super capacitor electrode production method

A technology for supercapacitors and electrode materials, applied in the field of material science, can solve the problems of difficult application of supercapacitors, difficult quality control, and difficult to guarantee the source of carbon materials, etc., to achieve the effect of improving cycle performance, not easy to drop powder, and good electrical conductivity

Inactive Publication Date: 2012-02-22
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the source of this carbon material is difficult to guarantee, and the quality is difficult to control, so it is difficult to apply it in the actual production of supercapacitors.

Method used

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  • Super capacitor electrode material and super capacitor electrode production method
  • Super capacitor electrode material and super capacitor electrode production method
  • Super capacitor electrode material and super capacitor electrode production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] a. Preparation of electrode slurry

[0035] Activated carbon (100 g), acetylene black (5 g), and 1-methyl-3-octylimidazolium tetrafluoroborate (9 g) were added to a ball mill, and a grinding treatment with a residence time of 1 hour was performed.

[0036] Add PTFE (6 grams), ethanol (40 grams) and deionized water (30 grams) to the mixture, grind for 40 minutes, then add deionized water (30 grams) to the mixture, and continue grinding for 1 hour to obtain electrode slurry material.

[0037] b. Electrode preparation

[0038] On an aluminum foil (thickness: 20 microns) as a current collector, the above-mentioned electrode slurry was evenly coated on both sides of the aluminum foil, and dried at 120°C for 5 minutes to obtain a pole piece with a thickness of 175 microns (including the aluminum foil).

[0039] On a press, the electrode pole piece is subjected to calendering treatment to form an electrode layer with a thickness of 120 microns to obtain the electrode pole pi...

Embodiment 2

[0042] a. Preparation of electrode slurry

[0043] Activated carbon (100 g), ketjen carbon black (6 g), and 1-methyl-3-dodecylimidazolium tetrafluoroborate (8 g) were added to a ball mill for grinding with a residence time of 1 hour.

[0044] Add PVDF (5 g), ethanol (30 g) and deionized water (30 g) to the mixture, grind for 40 minutes, then add deionized water (35 g) to the mixture, and continue grinding for 1 hour to obtain electrode slurry material.

[0045] b. Electrode preparation

[0046] Electrodes were prepared in the same manner as in Example 1.

Embodiment 3

[0048] a. Preparation of electrode slurry

[0049] Add activated carbon (100 g), ketjen carbon black (4 g), acetylene black (1.5 g), N-dodecyl-N, N-dimethylbenzyl ammonium tetrafluoroborate (10 g) in the ball mill ), the residence time is 1.5 hours of grinding treatment.

[0050] Add PTFE (5 grams), CMC (1 gram), Virahol (30 grams) and deionized water (50 grams) in this mixture, grind 40 minutes, and then add deionized water (30 grams) to this mixture, Continue grinding for 1 hour to obtain electrode slurry.

[0051] b. Electrode preparation

[0052] Electrodes were prepared in the same manner as in Example 1.

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PUM

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Abstract

The invention discloses a super capacitor electrode material and a super capacitor electrode production method. The electrode material contains an active substance, a conductive agent, a binder and a cationic surfactant, wherein, the cationic surfactant is quaternary ammonium salt with a long chain structure, the binder contains fluororesin, polyolefin compound, styrene butadiene rubber or carboxymethyl cellulose, and the conductive agent is ketjen carbon black, acetylene black, furnace black, carbon fiber VGCF, nano-graphite, carbon nanotube, graphite or conductive graphite. The super capacitor electrode production method comprises the following steps: (1) adding the conductive agent and the cationic surfactant into the active substance to carry out grinding and mixing; (2) adding the binder and solution to carry out slurry mixing to obtain slurry; (3) pasting the slurry on a current collection body, and carrying out calendaring, drying and molding. The electrode material and the production method in the invention have the characteristics of a simple process, uniform density of the active substance, good flexibility and wetting quality of an electrode sheet, strong conductivity, low internal resistance and high production efficiency.

Description

technical field [0001] The invention belongs to the field of material science, and in particular relates to a supercapacitor electrode material and a production method of a supercapacitor electrode in the field of electrochemistry. Background technique [0002] Supercapacitor (electric double layer capacitor) is a high-energy electric energy storage element developed in recent years. It has the advantages of high power density, high cycle life, fast charging and discharging, and no pollution to the environment. It is widely used in motor regulators Clean energy systems such as sensors, backup power supplies for microcomputer memory, starting devices for motor vehicles, wind power generation and solar power generation systems have attracted attention. [0003] As an energy storage device with excellent performance, supercapacitor has become one of the research hotspots in the interdisciplinary fields of materials, electricity, electronics, physics, and chemistry. The main re...

Claims

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Application Information

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IPC IPC(8): H01G9/058H01G11/34H01G11/86
CPCY02E60/13
Inventor 王道林金振兴
Owner BOHAI UNIV
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