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High-specific surface area functional active carbon material and electrode slurry preparation method

A high specific surface, electrode slurry technology, applied in battery electrodes, hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, etc., can solve the problems of difficulty in dispersion, affecting the capacitance performance of electrode materials, small specific gravity, etc., and achieve particle size distribution. The effect of uniformity, suppression of crystallization unevenness, and low cost

Active Publication Date: 2014-10-29
DAYING JUNENG TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Supercapacitor batteries are energy storage devices with the characteristics of electric double layer capacitor energy storage. High specific surface activated carbon is the most widely used electrode material for supercapacitor batteries. The high specific surface area of ​​activated carbon materials can reduce the concentration difference caused by the discharge reaction. However, due to the small specific gravity of the activated carbon material in the preparation of the slurry, it is difficult to disperse in the aqueous system, thus affecting the capacitance performance of the electrode material

Method used

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  • High-specific surface area functional active carbon material and electrode slurry preparation method

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Embodiment 1

[0046] (1) Pickling, weigh 100Kg activated carbon and add to 1.5m 3 In the enamel reaction kettle, add 0.9t deionized water, stir for 30min, slowly add 45Kg~50Kg nitric acid with a concentration of 0.1mol / L~3mol / L, the solid-liquid ratio is 1:5~20 (weight), stir for 2h~3h, The reactant is repeatedly washed in a plate and frame filter press until the filtrate is neutral;

[0047] (2) Surface treatment, put the product in (1) into an enamel reaction kettle with a heating device, add 0.8t deionized water, then add 100Kg urea, and raise the temperature at a rate of 5°C / min~8°C / min , the temperature is controlled between 90 ° C ~ 100 ° C, after constant temperature, stirring for 4 h ~ 6 h, the above reactants are repeatedly washed in the plate and frame filter press until the filtrate is neutral; the surface morphology of the reaction product is as follows figure 1 The surface pores of the treated carbon material are cleaned, and the specific surface area and pore volume and diame...

Embodiment 2

[0055] Steps (1) and (2) are the same as in Example 1;

[0056] (3) Loading of oxygen-containing metal compounds, at 1.5m 3 Add 0.9t deionized water, 35Kg nickel nitrate, 2Kg hexadecyltrimethylammonium bromide to the enamel reaction kettle, stir until completely dissolved, add the reactants in (2) to the above enamel reaction kettle, and stir for 0.5 h~1.5h; Measure 25% 22.5Kg concentrated ammonia water and slowly add it to the above-mentioned enamel reaction kettle. less than 5%;

[0057] (4) High temperature oxidation, put the dried product loaded in (3) into an argon-protected resistance furnace, the heating rate is 15°C / min, the constant temperature is 350°C, and the constant temperature oxidation reaction time is 2h;

[0058] (5) For secondary loading of oxygen-containing metal compounds, add 0.9t of deionized water to the enamel reaction kettle, add 36Kg of zinc nitrate, 42Kg of lead sulfate, 20Kg of 5% polyethylene glycol-600 solution, and stir until completely dissol...

Embodiment 3

[0062] Same as Example 1, but nitric acid in (1) is changed to phosphoric acid, and the others remain unchanged.

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Abstract

The invention relates to a high-specific surface area functional active carbon material and electrode slurry preparation method and solves the problems of small specific gravity, difficulty in diffusion and the like of high-specific surface area active carbon material. The preparation method includes steps that (1) acid pickling; (2) surface treatment; (3) loading of oxygenic metal compound; (4) high-temperature oxidizing; (5) secondary loading of oxygenic metal compound; (6) slurry preparation. According to the high-specific surface area functional active carbon material and electrode slurry preparation method, the oxygenic metal compound is loaded to the surface of the active carbon material so that the specific gravity of the high-specific surface area functional active carbon material is improved, and the high-specific surface area functional active carbon material with high pore volume and aperture is obtained; the high-specific surface area functional active carbon material is easy to adsorb electrolytic solution, the infiltration effect is obviously improved, the preparation technique is simple, and the large scale production can be realized.

Description

technical field [0001] The invention relates to a high-specific-area functionalized activated carbon material for a supercapacitor battery and a method for preparing an electrode slurry thereof, belonging to the technical field of energy storage materials. Background technique [0002] Supercapacitor batteries are energy storage devices with the characteristics of electric double layer capacitor energy storage. High specific surface activated carbon is the most widely used electrode material for supercapacitor batteries. The high specific surface area of ​​activated carbon materials can reduce the concentration difference caused by the discharge reaction. However, due to the small specific gravity of the activated carbon material in the preparation of the slurry, it is difficult to disperse in the aqueous system, thus affecting the capacitance performance of the electrode material. Contents of the invention [0003] The purpose of the present invention is to overcome the d...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/38H01G11/86H01M4/62C01B31/08
CPCY02E60/10
Inventor 蒋虎南漆长席吴孟强冯加民林彬
Owner DAYING JUNENG TECH & DEV
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