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Preparation method of self-activated high-specific-capacitance carbon micro-tube electrode

A technology of high specific capacitance and carbon microtubes, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of reducing energy density and hindering the promotion and application of supercapacitors, and achieves simple acquisition and high specific surface area , the effect of a wide range of sources

Active Publication Date: 2020-10-16
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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  • Preparation method of self-activated high-specific-capacitance carbon micro-tube electrode
  • Preparation method of self-activated high-specific-capacitance carbon micro-tube electrode
  • Preparation method of self-activated high-specific-capacitance carbon micro-tube electrode

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Embodiment 1

[0025] Take the cones of the phoenix tree flocculant cultivated by potash fertilizer, wash the cones with deionized water to remove impurities on the surface of the cones, and place them in a blast drying oven at 120°C for 24 hours. Cut the cones with a knife, take the fluffy fruit hairs, and remove the seeds to obtain the initial material. The pretreated material is placed in a tube furnace and calcined at a constant temperature of 900°C in a nitrogen atmosphere for two hours. The heating rate and cooling rate are both 5°C / min. After cooling to room temperature, the material is taken out to obtain the desired material.

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

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Abstract

The invention discloses a method for self-activating a high-specific-capacitance carbon micro-tube electrode material, which comprises the following steps of: taking French phoenix tree cones cultivated by a potash fertilizer, cutting the cones by using a cutter after drying is finished, and taking villus-shaped fruit hairs of the cones to obtain an initial material; The pretreated material is placed in a tubular furnace, the required material can be obtained after constant-temperature calcination and activation for a period of time, and the method is a simple and efficient preparation method.The invention belongs to the field of novel green energy sources, and due to the self-activation capability of the potassium element of the material, the carbon electrode material prepared by the method has a high specific surface area, shows excellent electrochemical performance in subsequent tests, and has huge potential in the field of novel green energy sources.

Description

Technical field [0001] The invention provides a method for preparing self-activating high specific capacitance carbon microtube electrode material by using the inner villi of the sycamore tree cones, which belongs to the field of new green energy. Background technique [0002] Because supercapacitors have long service life, high power density, fast charging and discharging rates, and low maintenance costs, they are widely used in portable electronic products, new energy electric vehicles, and national defense and military fields. However, today's supercapacitors tend to 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 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 material of the supercapacitor to ...

Claims

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Application Information

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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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