Supercapacitor electrode plate and preparation method thereof

A technology for supercapacitors and pole pieces, applied in the field of supercapacitor pole pieces and their preparation, can solve the problems of slurry dripping and hindering applications, achieve high production efficiency, increase energy density and power density, and reduce production costs

Inactive Publication Date: 2016-09-28
SHANDONG GOLDENCELL ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the energy density of supercapacitors, those skilled in the art have explored the use of metal collectors with holes to reduce

Method used

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  • Supercapacitor electrode plate and preparation method thereof
  • Supercapacitor electrode plate and preparation method thereof
  • Supercapacitor electrode plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] Example: A method for preparing a super capacitor pole piece. The pole piece preparation includes the following steps:

[0041] Ⅰ. Pulping, that is, 85% by weight of activated carbon, 10% of conductive carbon and 5% of binder are placed in a planetary vacuum mixer and 4 times the weight of the solid substance is added to stir, disperse and mix to obtain a uniform super capacitor slurry material.

[0042] Ⅱ. Film formation, use an extrusion coater to coat the uniform slurry obtained in step I on the polyimide film carrier 2 to prepare a carbon film 1

[0043] Ⅲ. Drying. In step Ⅱ, the polyimide film 2 coated with the carbon film 1 is dried in a tunnel oven. After drying, the thickness of the carbon film 1 is 200 μm, and the solvent content is controlled at 6%;

[0044] Ⅳ. Hot press forming, place the carbon film 1 dried in step Ⅲ on both sides of the porous aluminum current collector 3, heat and roll at a pressure of 120°C and 200 tons to combine the carbon film and the porous a...

Example

[0048] Comparative example:

[0049] The preparation method of the traditional super capacitor pole piece, the pole piece preparation includes the following steps:

[0050] Ⅰ. Pulping, that is, 85% by weight of activated carbon, 10% of conductive carbon and 5% of binder are placed in a planetary vacuum mixer and 4 times the weight of the solid substance is added to stir, disperse and mix to obtain a uniform super capacitor slurry material.

[0051] Ⅱ. Coating: Use an extrusion coater to coat the uniform slurry obtained in step I on a 20 μm thick aluminum foil to prepare a super capacitor pole piece with a single-sided coating thickness of 200 μm.

[0052] Ⅲ. To roll, the coated pole piece is rolled by a pair of roll machine, the thickness of the pole piece after rolling is 360μm.

[0053] Ⅳ. Slitting: Slit the pole piece behind the pair of rollers into 110mm width.

[0054] project

[0055] It can be seen from the above table that by adopting the technical scheme of the present inven...

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Abstract

A kind of supercapacitor pole piece and preparation method thereof, it is characterized in that comprising the following steps: 1, pulping, the active carbon of 60%~90% by weight, the conductive carbon of 5%~35% and the viscose of 5%~10% Put the binder into a planetary vacuum mixer and add a solvent 2 to 5 times the weight of the solid substance for stirring, dispersing and mixing to obtain a uniform supercapacitor slurry; The uniform slurry coated on the organic film carrier is prepared into a carbon film; Ⅲ, drying, step Ⅱ The organic film coated with the carbon film is dried in a tunnel oven, so that the content of the solvent in the carbon film is controlled at 5% to 10 Between %; Ⅳ, hot press forming, place the carbon film dried in step Ⅲ on both sides of the metal current collector, and combine the carbon film and the metal current collector by heating and rolling to form a supercapacitor pole piece.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and in particular relates to a pole piece of a supercapacitor with high energy density, high power density and good stability and a preparation method thereof. Background technique [0002] Supercapacitor is a new type of energy storage device between traditional capacitors and secondary batteries that has emerged in recent years. While retaining the characteristics of high power density of traditional capacitors, it has an electrostatic capacity of up to farads or even tens of thousands of farads. , so it has the characteristics of high energy density. At the same time, it also has the advantages of fast charging and discharging, high energy conversion efficiency, good temperature characteristics (-40 ° C ~ 70 ° C), long cycle life and environmental protection, so its technology has been widely valued by countries all over the world and can be widely used. Wind power, solar power, digit...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/32
CPCY02E60/13H01G11/86H01G11/32
Inventor 王勇张敬捧李涛关成善宗继月
Owner SHANDONG GOLDENCELL ELECTRONICS TECH
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