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Nitrogen-rich foam carbon electrode material for super capacitor and preparing method of nitrogen-rich foam carbon electrode material

A technology of supercapacitors and electrode materials, applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve the problems of long charging time, short service life and low energy storage density of secondary batteries, and achieve good cycle stability. performance, low preparation cost and simple process

Inactive Publication Date: 2014-09-10
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondary batteries have disadvantages such as long charging time, low energy storage density and short service life.
In addition to high nitrogen content, the carbon foam material obtained by pyrolysis of cyanate resin also has high porosity, high mechanical strength, and good electrical conductivity, but its open porosity is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Weigh bisphenol A cyanate and multifunctional cyanate at a ratio of 40:0 (mass ratio), then add dibutyltin dilaurate with 0.01% of the mass of cyanate and mix well. Nickel foam (area density 250g / m 2 ) in hydrochloric acid (concentration 0.1mol / L) for 4 hours (15°C), washed with deionized water until neutral, then placed in a vacuum oven at 80°C for drying, and then put nickel foam into a cast iron mold. Put the mixed cyanate ester and dibutyltin dilaurate into the polymerization reaction vessel, raise the temperature at a rate of 5°C / min, and feed Ar from the beginning of the temperature rise (flow rate: 50mL / min). When the temperature rises to 120°C, adjust the rotation speed to 500rpm and stir for 30min to obtain the pre-polymerized resin, and then pour it into a mold (130°C) to vacuumize and remove bubbles for 0.5h (vacuum degree 1.0×10 -1Pa), and then cured according to the following process: 130°C / 1h+160°C / 2h+250°C / 1h, put the cured resin into N 2 In a protectiv...

Embodiment 2

[0063] Weigh the bisphenol A type cyanate and multifunctional cyanate in a mass ratio of 40:10, then add N,N-dimethylamide with 0.05% of the mass of cyanate and mix evenly. Nickel foam (area density 500g / m 2 ) in hydrochloric acid (concentration 1mol / L) for 1h (25°C), washed with deionized water until neutral, then placed in a vacuum oven at 80°C for drying, and then put nickel foam into a cast iron mold. Put the mixed cyanate ester and dibutyltin dilaurate into the polymerization reaction vessel, raise the temperature at a rate of 5°C / min, and feed N 2 (Flow 100mL / min). When the temperature rises to 130°C, adjust the rotation speed to 600rpm and stir for 40 minutes to obtain a pre-polymerized resin, then pour it into a mold (140°C) to vacuumize and remove air bubbles for 1 hour, and then cure according to the following process: 150°C / 2h+200°C / 1h+240°C / 2h, put the cured resin into N 2 In a protective atmosphere furnace, raise the temperature to 800°C at a rate of 5°C / min a...

Embodiment 3

[0066] Weigh the bisphenol A type cyanate and the multifunctional cyanate in a mass ratio of 40:20, then add dibutyltin dilaurate with 0.1% of the mass of the cyanate and mix well. Nickel foam (area density 600g / m 2 ) in hydrochloric acid (concentration 0.5mol / L) for 2 hours (25°C), washed with deionized water until neutral, then dried in a vacuum oven at 80°C, and then put nickel foam into a cast iron mold. Put the mixed cyanate ester and dibutyltin dilaurate into the polymerization reaction vessel, raise the temperature at a rate of 5°C / min, and feed N 2 (Flow 200mL / min). When the temperature rises to 140°C, adjust the rotation speed to 800rpm and stir for 50 minutes to obtain a pre-polymerized resin, then pour it into a mold (150°C) to vacuumize and remove air bubbles for 0.5h, and then cure according to the following process: 140°C / 2h+180°C / 2h+250°C / 1h, put the cured resin into N 2 In a protective atmosphere furnace, then raise the temperature at a rate of 20°C / min to ...

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Abstract

The invention provides a nitrogen-rich foam carbon electrode material for a super capacitor and a preparing method of the nitrogen-rich foam carbon electrode material. The preparing method includes: taking foamed nickel subjected to acid treatment as an auxiliary template, taking cyanate ester as a raw material, and obtaining the nitrogen-rich foam carbon electrode material for the super capacitor via pre-polymerizing, moulding by casting, curing, carbonizing and template removing technologies. The prepared foam carbon electrode material is uniform in pore diameters, high in nitrogen content, good in electrical conductivity, high in porosity and aperture ratio, large in specific capacity, good in cycling performance and capable of realizing complex structure forming without a foaming technology.

Description

technical field [0001] The invention belongs to the field of high-performance carbon materials, and in particular relates to a nitrogen-rich foam carbon electrode material for a supercapacitor and a preparation method thereof. Background technique [0002] With the rapid growth of economy and population, the energy and resources that human beings rely on for survival are increasingly exhausted. In order to solve the energy crisis, on the one hand, new energy sources such as solar energy, wind energy, ocean energy and nuclear energy are gradually being developed and used; on the other hand, the development and application of new energy storage devices with high efficiency, low price and energy saving is imminent. At present, the main energy storage devices on the market are secondary batteries and traditional physical capacitors. Secondary batteries have disadvantages such as long charging time, low energy storage density and short service life. Conventional physical capaci...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/24H01G11/32
CPCY02E60/13
Inventor 林起浪连琴凤
Owner FUZHOU UNIVERSITY
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