Super-capacitor high-conductive active carbon electrode manufacturing method

A supercapacitor and activated carbon technology, applied in the field of electrodes, can solve the problems of high equipment requirements, no contribution to specific capacity, and high production costs, and achieve the effects of improving internal structure, reducing equivalent internal resistance, and increasing conductivity

Inactive Publication Date: 2016-03-30
FUJIAN XFH NEW ENERGY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, supercritical drying requires extreme environments such as high temperature and high pressure, which requires high equipment and high production costs, and the volume of carbon fiber cloth and graphite paper collectors does not contribute to the specific capacity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing a highly conductive activated carbon electrode for a supercapacitor includes the following steps:

[0020] 1) Preparation of graphene oxide / activated carbon mixture:

[0021] Add the activated carbon raw materials to the graphene oxide solution, the mass ratio of activated carbon to graphene oxide is 19:1, and react at 100°C for 1 hour under ultrasonic conditions. After the reaction, the mixture solution is obtained; the graphene oxide solution is the HUMMERS method Prepared with a concentration of 0.1%. The activated carbon raw material is a combination of wooden activated carbon and straw activated carbon.

[0022] 2) Preparation of graphene / activated carbon electrode:

[0023] Add the mixture solution obtained in 1) into a polytetrafluoroethylene container, and then add a catalyst, seal and react at 80°C for 10 hours, wash thoroughly with distilled water after the reaction, and dry at 80°C for 24 hours to obtain a highly conductive activated carbon el...

Embodiment 2

[0025] A method for preparing a highly conductive activated carbon electrode for a supercapacitor includes the following steps:

[0026] 1) Preparation of graphene oxide / activated carbon mixture:

[0027] Add the activated carbon raw material to the graphene oxide solution. The mass ratio of activated carbon to graphene oxide is 99:1. Under ultrasonic conditions, react at 80°C for 10 hours. After the reaction, the mixture solution is obtained; the graphene oxide solution is the HUMMERS method Prepared with a concentration of 3%. The activated carbon raw material is straw activated carbon.

[0028] 2) Preparation of graphene / activated carbon electrode:

[0029] Add the mixture solution obtained in 1) into a polytetrafluoroethylene container, and then add a catalyst, seal and react at 200°C for 1h, wash thoroughly with distilled water after the reaction, and dry at 80°C12 to obtain a highly conductive activated carbon electrode. The catalyst is anhydrous ethanol, and its addition amou...

Embodiment 3

[0031] A method for preparing a highly conductive activated carbon electrode for a supercapacitor includes the following steps:

[0032] 1) Preparation of graphene oxide / activated carbon mixture:

[0033] Add the activated carbon raw materials to the graphene oxide solution, the mass ratio of activated carbon to graphene oxide is 49:1, and react at 100°C for 6 hours under ultrasonic conditions. After the reaction, the mixture solution is obtained; the graphene oxide solution is the HUMMERS method Prepared with a concentration of 2%, the activated carbon raw material is wooden activated carbon.

[0034] 2) Preparation of graphene / activated carbon electrode:

[0035] Add the mixture solution obtained in 1) into a polytetrafluoroethylene container, and then add a catalyst, seal and react at 130°C for 6h, wash thoroughly with distilled water after the reaction, and dry at 100°C for 14h to obtain a highly conductive activated carbon electrode. The catalyst is ethanol, and its addition amo...

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PUM

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Abstract

The invention discloses a super-capacitor high-conductive active carbon electrode manufacturing method. The method comprises the following steps of 1) manufacturing an oxidized grapheme/active carbon mixture: adding an active carbon raw material into an oxidized graphene solution, under an ultrasound condition, carrying out a reaction at a temperature of 80 DEG C to 100 DEG C for 1h to 10hs, after the reaction is ended, obtaining a mixture solution; 2) manufacturing a grapheme/active carbon electrode: adding the mixture solution obtained from the step 1 into a Teflon container, and then adding a catalyst, after sealing, carrying out the reactor at a temperature of 80 DEG C to 200 DEG C for 1h to 10 hs, after the reaction is ended, using distilled water to fully clean, and drying for 12 to 24 hs under the temperature of 80 to 100 DEG C to acquire a high-conductive active carbon electrode. The active carbon manufactured in the invention is dispersed in a grapheme three-dimensional network structure. A hydrothermal technology is used to manufacture and acquire an aerogel structure. A specific area of a composite material can be further increased and simultaneously an internal structure of a composite electrode material is improved. A hierarchical porous structure, where a macropore, a mesoporous and a micropore exist, is formed. Specific capacitance performance of an electrode material is further increased.

Description

Technical field [0001] The invention relates to the electrode field technology, in particular to a method for preparing a supercapacitor high-conductivity activated carbon electrode. Background technique [0002] Supercapacitors, also known as electrical double-layer capacitors (ElectricalDoule-LayerCapacitor), are a new type of energy storage device, which has the characteristics of short charging time, long service life, good temperature characteristics, energy saving and environmental protection. Super capacitors are widely used. Used as a power balance power supply for lifting devices, which can provide super-large current power; used as a vehicle start-up power source, its starting efficiency and reliability are higher than traditional batteries, and it can fully or partially replace traditional batteries; used as vehicle traction energy It can produce electric vehicles, replace traditional internal combustion engines, and transform existing trolleybuses. It can be used in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86
CPCY02E60/13
Inventor 宋宏芳赵东辉李芳戴涛周鹏伟
Owner FUJIAN XFH NEW ENERGY MATERIALS CO LTD
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