A kind of preparation method of self-activated high specific capacitance carbon microtube electrode

A high specific capacitance, carbon microtube technology, applied in the fields of hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, etc., can solve problems such as hindering the promotion and application of supercapacitors, reducing energy density, etc., to achieve simple acquisition and high specific surface area. , a wide range of effects

Active Publication Date: 2022-03-11
SHANDONG UNIV OF TECH
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Problems solved by technology

However, today's supercapacitors often significantly reduce their own energy density under high power conditions, which greatly hinders the promotion and application of supercapacitors.

Method used

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  • A kind of preparation method of self-activated high specific capacitance carbon microtube electrode
  • A kind of preparation method of self-activated high specific capacitance carbon microtube electrode
  • A kind of preparation method of self-activated high specific capacitance carbon microtube electrode

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Embodiment 1

[0025] Take the cones of sycamore flocs cultivated with potassium fertilizer, wash away the impurities on the surface of the cones with deionized water, and then put them into a blast drying oven at 120° C. for 24 hours to dry. The cone is cut open with a knife, the fluffy fruit hair is taken, and the seeds are removed to obtain the initial material. The above pretreated materials were placed in a tube furnace and calcined at a constant temperature of 900°C for two hours in a nitrogen atmosphere with a heating rate and a cooling rate of 5°C / min. After cooling to room temperature, they were taken out to obtain the desired material.

[0026] Divide the sample into three parts, one for element content test, to determine the chemical composition of the material; one for electrochemical test, in 6mol / L KOH solution, through the CHI 660E electrochemical workstation, using the three-electrode test system to measure the prepared electrode Material performance; the last part is used fo...

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Abstract

The invention discloses a method for self-activating a high specific capacitance carbon microtube electrode material, which comprises the following steps: take the cones of the sycamore tree cultivated by potassium fertilizer, cut the cones open with a knife after drying, and take the fluffy fruit Gross, get the initial material. Putting the above-mentioned pretreated materials in a tube furnace, calcination and activation at a constant temperature for a period of time can obtain the required materials, which is a simple and efficient preparation method. The invention belongs to the field of new green energy. Because of the self-activation ability of the potassium element of the material itself, the carbon electrode material prepared by this method has a high specific surface area, and exhibits excellent electrochemical performance in subsequent tests. field has great potential.

Description

technical field [0001] The invention provides a method for preparing self-activating high specific capacitance carbon microtube electrode materials by using the villi in the cones of sycamore trees, which belongs to the field of new green energy. Background technique [0002] Because supercapacitors have the characteristics of long service life, high power density, fast charge and discharge rate, and low maintenance cost, they have been widely used in portable electronic products, new energy electric vehicles, and national defense and military fields. But today's supercapacitors often significantly reduce their own energy density under high power conditions, which greatly hinders the promotion and application of supercapacitors. Therefore, it has become a technical problem to develop supercapacitors that can still maintain high energy density under high power conditions. [0003] To solve the above problems, the best way is to improve the performance of the electrode materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/44H01G11/34H01G11/24
CPCH01G11/86H01G11/44H01G11/34H01G11/24
Inventor 丁春艳吴松松胡鑫森温广武
Owner SHANDONG UNIV OF TECH
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