Method for preparing super capacitor on basis of three-dimensional porous graphene composite material

A technology of supercapacitors and composite materials, applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc.

Inactive Publication Date: 2015-05-20
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Graphitization is the orderly transformation of thermodynamically unstable carbon atoms from random layer structure to graphite crystal structure by thermal activation. In the process of graphitization, high temperature Heat treatment (above 2000°C) provides energy for atomic rearrangement and structural transformation, so the conditions are harsh and the cost is high

Method used

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  • Method for preparing super capacitor on basis of three-dimensional porous graphene composite material

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Experimental program
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Embodiment 1

[0031] (2) Take 0.03 mol sodium dicotate in advance in 100ml distilled water, and then add 0.25mol NaOH aquatic solution to fully react under strong stirring, and then add an appropriate amount of distilled water to make a mixed slurry C;

[0032] (3) Under the condition of constantly stirring mixing slurry C, adding aquatic solution A and aquatic solution B to the mixed pulp C;

[0033] (4) After adding the addition, the pH value of NAOH solution with a mass ratio of 30%is 9.0 to obtain the sample; put the sample at 80 ° C for 12 hours;

[0034] (5) Wash the samples of Chen Hua to pH = 7, filter, and dry the obtained filter cake within 80 ° C temperature.

[0035] (6) Place the tiny stones of Ding Diexic acid roots in a tube furnace, burn it under the protection of the salamander, heat up to 1000 ° C, and then heat the temperature for 3 hours, then cool down and cool to room temperature to get rough products;

[0036] (7) After removing impurities with exfoliating coarse products...

Embodiment 2

[0045] (2) Take 1.7 mol's sodium dulate sodium sodium sodium sodium sulfonate in 100 ml of distilled water, this is solution C;

[0046] (3) Under the condition of constantly stirring solution C, the aqueous solution A and aquatic solution B are dripped into the solution C;

[0047] (4) After the addition of the drop is completed, the pH value of the NAOH solution with a mass ratio of 30%is 8.0 to obtain the sample; put the sample at 70 ° C for 16 hours;

[0048] (5) Wash the samples of Chen Hua to pH = 7, filter, and dry the obtained filter cake within 60 ° C temperature.It

[0049] (6) Place the water slippery stone plugged in the root of the duoline benzene sulfonic acid in the tube furnace, burn it under the protection of nitrogen, heat up to 800 ° C, then heat the temperature for 6 hours, then cool down and cool to room temperature to get rough products to obtain rough productsIt

[0050] (7) After removing impurities with exfoliating coarse products, the vacuum drying materi...

Embodiment 3

[0058] (2) Take 0.01mol's special -grade pure rosin fully scattered in 100ml water -free ethanol, this is solution C;

[0059] (3) Under the condition of constantly stirring solution C, the aqueous solution A and aquatic solution B are dripped into the solution C;

[0060] (4) After adding the addition, the pH value of NAOH solution with a mass ratio of 30%is 11.0 to obtain the sample; put the sample at 90 ° C for 10 hours;

[0061] (5) Wash the samples of Chen Hua to pH = 8, filter, and dry the obtained filter cake within 100 ° C temperature.

[0062] (6) Put the rosin roots in the tube furnace, burn it under the protection of the salamander, heat up to 1500 ° C, and then heat the temperature for 1 hour, then cool down and cool to room temperature to get rough products;

[0063] (7) After removing impurities with exfoliating coarse products, the vacuum drying material with a three-dimensional porous structure at 80 ° C is obtained;Up to 1810M 2 / g, single -point Kong Rong (P / P0 =...

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Abstract

The invention relates to a method for preparing a super capacitor on the basis of a three-dimensional porous graphene composite material. The method comprises the following steps of grinding and mixing the three-dimensional porous graphene composite material, acetylene black and a polytetrafluoroethylene emulsion with the mass fraction of 15 percent in the weight part ratio of (76-84):(12-18): (5-8) into electrode slurry, and uniformly dispersing the electrode slurry into a small amount of anhydrous alcohol to form paste liquid, and coating the paste liquid onto the surface of foam nickel to form a thin sheet to obtain an electrode plate; taking a polypropylene porous film as a septum, soaking the septum in electrolyte aqueous solution, placing the soaked septum between two electrode plates, and packaging to prepare the super capacitor of the two electrode plates. The method is based on the three-dimensional porous graphene composite material; when the packaging current density is 0.1 A / g, the specific capacity can be between 236 and 160f / g.

Description

Technical field [0001] The invention is a new material technology field, especially a method for preparing super capacitors based on three -dimensional multi -hole graphene composite materials. technical background [0002] SuperCapacitor is a new type of energy storage device between the secondary battery and traditional capacitors. It has the advantages of high power density, fast charging and discharge, high security, long cycle life, green environmental protection and other.The characteristic, also has the power characteristics of capacitors, is considered a revolution in the field of energy storage. It has shown huge application value in many fields such as hybrid vehicles, communications, national defense, and consumer electronics.The inside of the supercapacitors is mainly composed of electrodes, electrolytes, and diaphragms. Among them, the electrode determines the main performance indicators of the supercapacitors. The electrode is composed of a collector and an electrod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/84H01G11/86H01G11/36C01B31/04
CPCY02E60/13H01G11/84H01G11/36H01G11/86
Inventor 凌启淡陈鸿章文贡肖厚文
Owner FUJIAN NORMAL UNIV
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