High-capacitance polyindole nitrogen-doped porous carbon material and preparation method thereof

A technology of nitrogen-doped porous carbon and polybenzazole, which is applied in the manufacture of hybrid/electric double-layer capacitors and electrodes of hybrid capacitors, and can solve problems such as high cost, cumbersome process, and unfriendly environment

Inactive Publication Date: 2017-08-15
JIANGXI SCI & TECH NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the latter can increase the nitrogen doping content and have a higher capacitance value, the preparation of porous materials usually requires the use of

Method used

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  • High-capacitance polyindole nitrogen-doped porous carbon material and preparation method thereof
  • High-capacitance polyindole nitrogen-doped porous carbon material and preparation method thereof
  • High-capacitance polyindole nitrogen-doped porous carbon material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] The high-capacity polybenzazole nitrogen-doped porous carbon material is made of the following components by weight: 10 parts of indole, 50 parts of ammonium persulfate, 60 parts of potassium hydroxide, ethanol-water mixed solution (the mass of ethanol and aqueous solution The ratio is 0.2:1) 500 parts.

[0030] Depend on figure 2 As shown, the high-capacitance polybenzazole nitrogen-doped porous carbon material has a large pore size distribution, which is determined by image 3 As shown, the specific capacitance value of the nitrogen-doped porous carbon material is 330F / g at a current density of 1A / g, and when the current density increases to 20A / g, the specific capacitance value is 160F / g, by Figure 4 As shown, the nitrogen-doped porous carbon material has a stability of 87% under the condition of 1000 cycles.

Embodiment 2

[0032] The high-capacity polybenzazole nitrogen-doped porous carbon material is made of the following components in parts by weight: 10 parts of carboxyindole, 10 parts of aminoindole, 30 parts of copper perchlorate, 30 parts of potassium permanganate, hydrogen 150 parts of sodium oxide, 750 parts of dichloromethane water mixed solution (the mass ratio of dichloromethane to aqueous solution is 0.4:1).

[0033] It is determined that the capacitance value of the high-capacity polybenzazole nitrogen-doped porous carbon material is 332 F / g at a current density of 1 A / g, and the 1000-cycle stability reaches 91%.

Embodiment 3

[0035] High-capacity polybenzazole nitrogen-doped porous carbon material, made of the following components by weight: 15 parts of 5-nitroindole, 10 parts of aminoindole, 5 parts of cyanindole, and 45 parts of potassium iodate , 25 parts of potassium permanganate, 120 parts of potassium hydroxide, 30 parts of sodium carbonate, 30 parts of zinc chloride, 700 parts of isopropanol-water mixed solution (the mass ratio of isopropanol and aqueous solution is 0.3:1), acetonitrile aqueous solution (The mass ratio of acetonitrile to aqueous solution is 0.5:1) 300 parts.

[0036] It is determined that the capacitance value of the high-capacity polybenzazole nitrogen-doped porous carbon material is 389 F / g at a current density of 1 A / g, and the 1000-cycle stability reaches 96%.

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Abstract

The invention discloses a high-capacitance polyindole nitrogen-doped porous carbon material and a preparation method thereof, and belongs to the technical field of processing of a carbon material. The high-capacitance polyindole nitrogen-doped porous carbon material comprises the following constituents based on parts by weight: 10-30 parts of indole compound, 30-90 parts of oxidizing agent, 60-180 parts of activating agent and 300-1,000 parts of solvent. The nitrogen-doped porous carbon material provided by the invention has the characteristics of relatively high nitrogen-doped quantity, large-pore diameter distribution, high charge-discharge stability, high-rate performance and high specific capacitance value.

Description

technical field [0001] The invention relates to the technical field of carbon material processing, in particular to a high-capacity polybenzazole nitrogen-doped porous carbon material and a preparation method thereof. Background technique [0002] As a green and environmentally friendly secondary energy device, supercapacitors can effectively alleviate problems such as energy shortages and serious greenhouse effects, and are in line with the major needs of the national new energy development strategy. Supercapacitors have the characteristics of high power, instantaneous high current charge and discharge, long service life and energy saving, which has become one of the current research hotspots. [0003] High-performance supercapacitors must have high capacitance, high rate performance, high power density, high energy density, and high stability. Carbon-based electrode materials for supercapacitors have been widely studied, including activated carbon black, carbon nanotubes,...

Claims

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Application Information

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IPC IPC(8): H01G11/26H01G11/32H01G11/86
CPCY02E60/13H01G11/26H01G11/32H01G11/86
Inventor 周卫强徐景坤吴井蒋丰兴祝丹华
Owner JIANGXI SCI & TECH NORMAL UNIV
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