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Capacitor electrode and preparation method based on nitrogen-sulfur co-doped porous carbon microsphere material

A technology of nitrogen-sulfur co-doping and capacitor electrodes, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve the problems of complex synthesis process, inability to meet the practical application requirements of supercapacitors, and high cost, and achieve excellent electrical properties The effect of performance, great application potential and industrial value

Active Publication Date: 2019-04-16
WENZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these new materials can effectively improve their performance, they still have many defects such as high cost and complicated synthesis process, which cannot meet the practical application requirements of supercapacitors.

Method used

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  • Capacitor electrode and preparation method based on nitrogen-sulfur co-doped porous carbon microsphere material
  • Capacitor electrode and preparation method based on nitrogen-sulfur co-doped porous carbon microsphere material
  • Capacitor electrode and preparation method based on nitrogen-sulfur co-doped porous carbon microsphere material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] S1: React hexachlorobutadiene, TDEC and acetone in a polytetrafluoroethylene-lined autoclave at 120°C and 1.5MPa for 2 hours, where the concentration of TDEC and hexachlorobutadiene is 6mg / mL, the volume ratio of hexachlorobutadiene to acetone is 1:3.5;

[0054] S2: After the reaction, the pressure was released to normal pressure, and naturally cooled to room temperature, and the obtained solid was dried at 115° C. for 7 hours to obtain a dry sample;

[0055] S3: The dry sample was calcined at a high temperature of 1000°C for 2 hours under the protection of nitrogen to obtain a nitrogen-sulfur co-doped carbon microsphere composite material, which was named L1.

Embodiment 2-3

[0056] Embodiment 2-3: the investigation of high temperature treatment temperature in step S3

[0057] Except that the high-temperature treatment temperature in step S3 was replaced by 900°C and 1100°C respectively, other operations remained unchanged, so that Example 1 was repeated, and thus Examples 2-3 were carried out in sequence, and the obtained composite materials were named as L2 and L3.

[0058] After calculation, when the scan rate is 1mv / s, the electrode capacitance values ​​prepared by L1, L2, and L / 3 are shown in Table 1 below:

[0059] Table 1

[0060]

[0061] It can be seen that in step S3, the temperature selection of the high temperature treatment is very important, and 1000° C. is the optimum temperature, at which time a composite material with optimal properties can be obtained.

Embodiment 4-5

[0062] Embodiment 4-5: the investigation of different solvents in step S1

[0063] Except that the acetone in step S1 was replaced by isopropanol and ethylene glycol, the other operations were unchanged, so that Example 1 was repeated to obtain Examples 4-5, and the obtained materials were named L4 and L5.

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Abstract

The invention relates to a capacitor electrode based on a nitrogen-sulfur co-doped porous carbon microsphere composite material and a preparation method of the capacitor electrode. The method comprises the following steps: S1: subjecting hexachlorobutadiene, tellurium diethyldithiocarbamate (TDEC) and a solvent to an airtight reaction under a high temperature and pressure; S2: after the reaction is finished, releasing the pressure to normal pressure and naturally cooling to room temperature, and drying the resulting solid to obtain a dried sample; S3: performing high-temperature roasting treatment on the dried sample under the protection of inert gas to obtain the nitrogen-sulfur co-doped porous carbon microsphere composite material. The nitrogen-sulfur co-doped porous carbon microsphere composite material has excellent electrical properties and thus can be applied in the field of capacitors, especially in the field of super capacitors, and has a good application prospect and industrialization potential.

Description

technical field [0001] The invention provides a composite material and its preparation method and application, more specifically, it provides a capacitor electrode based on nitrogen-sulfur co-doped porous carbon microsphere composite material and its preparation method, belonging to the technical field of inorganic functional materials and electrodes . Background technique [0002] As a new type of clean energy technology, supercapacitor is a new, efficient and practical energy storage device, which has the advantages of large capacity, high power, long life, low cost, and environmental friendliness. It is a revolutionary development and can replace traditional storage batteries in some fields, giving full play to the advantages that batteries cannot play. [0003] However, at present, activated carbon is used as the electrode material of supercapacitors, and there are still defects such as high current charge and discharge difficulties, low energy density, and short cycle ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/32H01G11/26H01G11/86
CPCY02E60/13
Inventor 金辉乐王舜罗茂君王继昌余小春冯鑫李俊
Owner WENZHOU UNIV
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