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Ordered porous carbon electrode material and preparation method thereof

A porous carbon electrode and composite carbon technology, which is applied in hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, nanotechnology for materials and surface science, etc., can solve the problem of long time-consuming physical activation, high energy consumption of chemical activation, No pollution and other problems, to achieve the effect of simple preparation method, good electrochemical performance and strong operability

Inactive Publication Date: 2016-09-28
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon materials prepared by conventional activation methods are difficult to have ordered pore structure characteristics, and physical activation takes a long time and is inefficient, while chemical activation usually has the disadvantages of high energy consumption and large pollution.

Method used

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  • Ordered porous carbon electrode material and preparation method thereof
  • Ordered porous carbon electrode material and preparation method thereof
  • Ordered porous carbon electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 8.0 g of ethylenediaminetetraacetic acid tripotassium salt (EDTA-3K) and dissolve it in 4 g of deionized water, oscillate fully and ultrasonically dissolve. Then add 0.8g porous silicon KIT-6 template agent (KIT-6:EDTA-3K mass ratio is 0.1:1), so that the template agent is fully immersed in the EDTA-3K solution, soaked for 8h, then ultrasonicated for 2h, and vacuumed for 6h Afterwards, the mixture was centrifuged at 4500 r / min for 2 h to extract the sediment, which was dried at 80° C. to obtain a dry product.

[0031] Then put the above-mentioned composite product after drying into a nickel crucible, place it in a high-temperature quartz tube furnace, and 2 (Flow rate: 100mL / min), the temperature was raised to 700°C at a heating rate of 2°C / min, maintained at 700°C for 3 hours, cooled naturally, and a black composite carbon material was obtained after pyrolysis. Then add excess 5% HF (v / v) solution to immerse the composite carbon material, stir for 24h, and separ...

Embodiment 2

[0034] Weigh 8.0 g of ethylenediaminetetraacetic acid dipotassium salt (EDTA-2K) and dissolve it in 16 g of deionized water, oscillate fully and ultrasonically dissolve. Then add 2.0g porous silicon KIT-6 template agent (KIT-6:EDTA-2K mass ratio is 0.25:1), so that the template agent is fully immersed in the EDTA-2K solution, soaked for 4h, then ultrasonic 0.5h, vacuum 3h After the treatment, the mixture was centrifuged at 2500 r / min for 4 h to extract the sediment, which was dried at 60° C. to obtain a dry product.

[0035] Then put the above-mentioned composite product after drying into a nickel crucible, place it in a high-temperature quartz tube furnace, and under the protection of the inert gas flow Ar (flow rate is 20mL / min), heat up to 900°C at a heating rate of 10°C / min. After maintaining at 900°C for 0.5h, it was cooled naturally, and a black composite carbon material was obtained after pyrolysis.

[0036] Then add an excess of 20% HF (v / v) solution to immerse the co...

Embodiment 3

[0039] Weigh 8.0 g of ethylenediaminetetraacetic acid dipotassium salt (EDTA-2K) and dissolve it in 10 g of deionized water, oscillate fully and ultrasonically dissolve. Then add 1.0g of porous silicon KIT-6 template agent (KIT-6:EDTA-2K mass ratio is 0.125:1), so that the template agent is fully immersed in the EDTA-2K solution, soaked for 6h, then ultrasonicated for 1h, and vacuumed for 5h Afterwards, the mixture was centrifuged at 3500 r / min for 3 h to extract the sediment, which was dried at 70° C. to obtain a dry product.

[0040] Then put the above-mentioned composite product after drying into a nickel crucible, place it in a high-temperature quartz tube furnace, and under the protection of the inert gas flow Ar (flow rate is 60mL / min), heat up to 800°C at a heating rate of 6°C / min. After maintaining at 800°C for 2 hours, it was cooled naturally, and a black composite carbon material was obtained after pyrolysis.

[0041] Then add an excess of 10% HF (v / v) solution to i...

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Abstract

The invention provides an ordered porous carbon electrode material and a preparation method thereof. The method comprises the following steps that ETDA-xK is dissolved in deionized water and vibrated fully and dissolved in an ultrasonic manner to obtain an ETDA-xK solution, a porous silicon KIT-6 template is added so that the template is fully immersed in the ETDA-xK solution, ultrasonic processing and vaccumizing are carried out, centrifugation is carried out on a mixture to obtain a sediment, and the sediment is dried to obtain a dry product; the product is placed in a nickel crucible, the nickel crucible is placed in a high temperature quartz tubular furnace, high-temperature pyrolysis is carried out under the protection with inertia air flows, a black composite carbon material is obtained after pyrolysis, the composite material is immersed in strong acid and / or alkali solutions and stirred for reaction, and then washed till the material is neutral, and the material is then dried in vacuum to obtain the nitrogen-doped porous carbon material. The material prepared by the method is extremely high in the electrochemical performance and high in stability.

Description

technical field [0001] The invention belongs to the field of supercapacitor electrode material preparation, and in particular relates to an ordered porous carbon electrode material and a preparation method thereof. Background technique [0002] With the rapid development of the global economy and society, the gradual depletion of fossil fuels and the aggravation of environmental pollution, efficient, clean and sustainable green energy and energy storage technologies have become the focus of current and future research. At present, solar energy and wind energy are considered to be the green energy sources with the most development potential, but the transmission and energy storage technologies of these energies are extremely weak. In terms of energy storage, ordinary batteries have better energy density, but low power density, while conventional capacitors are just the opposite. [0003] Supercapacitors, also known as electrochemical capacitors, are new energy storage compon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/36H01G11/24H01G11/86B82Y30/00B82Y40/00
CPCY02E60/13H01G11/36B82Y30/00B82Y40/00H01G11/24H01G11/86
Inventor 何劲松戴江栋谢阿田田苏君常忠帅闫永胜
Owner JIANGSU UNIV
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