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Fluorine modified activated carbon electrode surface composite treatment method and application thereof

A composite treatment, electrode surface technology, applied in the field of electrochemistry, can solve problems such as difficulty in meeting energy requirements, limited use scenarios of supercapacitors, and low energy density

Active Publication Date: 2021-09-07
杭州阳名新能源设备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the energy density of electric double-layer supercapacitors is much lower than that of secondary batteries, and it is difficult to meet the energy demand of loads such as large power equipment and electric vehicles. The use scenarios of supercapacitors are greatly limited.

Method used

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  • Fluorine modified activated carbon electrode surface composite treatment method and application thereof
  • Fluorine modified activated carbon electrode surface composite treatment method and application thereof
  • Fluorine modified activated carbon electrode surface composite treatment method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Measure 2600 μL of N-methylpyrrolidone, weigh 500 mg of polyvinylidene fluoride, add polyvinylidene fluoride to N-methylpyrrolidone, and stir for 2 hours at a speed of 400 r / min with a magnetic stirrer until polyvinylidene fluoride Completely dissolve ethylene powder in N-methylpyrrolidone; weigh 500mg of conductive agent Super P and 4000mg of activated carbon, add them into the system and stir at 400r / min for 12h at room temperature; finally use a micro ball mill to mill for 6min with a vibration frequency of 50Hz , to obtain a uniform electrode slurry.

[0066] Use a 100 μm doctor blade to coat the electrode slurry on carbon-coated aluminum foil, put it in a blast drying oven for 2 hours at 80°C, and then put it in a vacuum drying oven for 12 hours at 80°C to obtain a pole piece.

[0067] Put the pole piece into a low-temperature plasma processing device, the gas in the treatment cabin is carbon tetrafluoride, the power supply is set to 80W, the air pressure in the ca...

Embodiment 2

[0070] Measure 2200 μL of N-methylpyrrolidone, weigh 500 mg of polyvinylidene fluoride, add polyvinylidene fluoride to N-methylpyrrolidone, and stir for 3 hours at a speed of 300 r / min with a magnetic stirrer until polyvinylidene fluoride Completely dissolve ethylene powder in N-methylpyrrolidone; weigh 500mg of conductive agent Super P and 4000mg of activated carbon, add to the system and stir at 300r / min for 12h at room temperature; finally use a micro ball mill for 3min, vibration frequency 30Hz , to obtain a uniform electrode slurry.

[0071] Use a 150 μm scraper to coat the electrode slurry on the carbon-coated aluminum foil, put it in a blast drying oven for 4 hours at 60°C, and then put it in a vacuum drying oven for 16 hours at 60°C to obtain a pole piece.

[0072] Put the pole piece into a low-temperature plasma processing device, the gas in the treatment chamber is carbon tetrafluoride, the power supply is set to 100W, the air pressure in the chamber is 60Pa during t...

Embodiment 3

[0075] Measure 2400 μL of N-methylpyrrolidone, weigh 400 mg of polyvinylidene fluoride, add polyvinylidene fluoride to N-methylpyrrolidone, and stir for 2 hours at a speed of 400 r / min with a magnetic stirrer until polyvinylidene fluoride Completely dissolve ethylene powder in N-methylpyrrolidone; weigh 400mg of conductive agent Super P and 4000mg of activated carbon, add them into the system and stir at 400r / min for 13h at room temperature; finally use a micro ball mill for 2min, vibration frequency 150Hz , to obtain a uniform electrode slurry.

[0076] Use a 200 μm doctor blade to coat the electrode slurry on carbon-coated aluminum foil, put it in a blast drying oven for 2 hours at 90°C, and then put it in a vacuum drying oven for 16 hours at 120°C to obtain a pole piece.

[0077] Put the pole piece into the low-temperature plasma processing device, the gas in the treatment chamber is carbon tetrafluoride, the power supply is set to 150W, the air pressure in the chamber is 8...

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Abstract

The invention discloses a fluorine-modified activated carbon electrode surface composite treatment method and application thereof. The method comprises the steps: adding a binder, a conductive agent and activated carbon into a dispersing agent, performing magnetic stirring until the binder is dissolved, and obtaining mixed slurry; carrying out ball milling treatment on the mixed slurry to obtain electrode slurry; coating a carbon-coated aluminum foil with the electrode slurry, and sequentially carrying out forced air drying and vacuum drying until the solvent is dried to obtain an electrode plate; treating the surface of the electrode plate by adopting a low-temperature plasma technology; and depositing a metal oxide with the thickness of 1-10nm on the electrode plate subjected to surface treatment by adopting an atomic layer deposition technology to obtain the fluorine modified activated carbon electrode subjected to composite treatment. The method is simple, efficient and rapid, can be used for preparing the high-energy-density activated carbon electrode supercapacitor in batches, and has a good market application prospect.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a composite treatment method for the surface of a fluorine-modified activated carbon electrode and an application thereof. Background technique [0002] At present, activated carbon, a carbon material with high specific surface area, is mainly used in symmetrical electrode electric double layer capacitors. However, the energy density of electric double-layer supercapacitors is much lower than that of secondary batteries, and it is difficult to meet the energy demand of loads such as large power equipment and electric vehicles. The use scenarios of supercapacitors are greatly limited. Therefore, the research on improving the energy density of supercapacitors is particularly important. According to this, increasing the specific capacitance of the electrode material and widening the voltage window of the supercapacitor can increase its energy density. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/34H01G11/86
CPCH01G11/34H01G11/86Y02E60/13
Inventor 吴晓东韩晓刚钱荣成白宇鸽李曼妮陈韦蒙李鸿杰杨恒瑞
Owner 杭州阳名新能源设备科技有限公司
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