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Combined preparation method of carbon micro-nanotubes and N-doped porous carbon/nickel manganese oxide

A joint preparation and nickel-manganese oxide technology, applied in the direction of carbon nanotubes, carbon preparation/purification, nano-carbon, etc., can solve the problems of coke demand reduction, environmental pollution, etc., and achieve the effect of improving capacitance performance

Active Publication Date: 2017-01-25
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently, coke demand is down due to lower steel production
In addition, the tar and gas produced in this process also caused serious pollution to the environment due to improper handling

Method used

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  • Combined preparation method of carbon micro-nanotubes and N-doped porous carbon/nickel manganese oxide
  • Combined preparation method of carbon micro-nanotubes and N-doped porous carbon/nickel manganese oxide
  • Combined preparation method of carbon micro-nanotubes and N-doped porous carbon/nickel manganese oxide

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Experimental program
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Embodiment 1

[0046] The method for jointly preparing carbon micronanotubes and N-doped porous carbon / nickel-manganese oxide in this embodiment comprises the following steps:

[0047] Step 1. Prepare coal-based polyaniline by in-situ polymerization according to the method disclosed in "A N-doped porous carbon / NiO composite material and its preparation method" with application number 201510464778.2; specifically:

[0048] Step 101, uniformly mix 10 g of aniline, 30 mL of concentrated hydrochloric acid (37% in mass concentration) and 60 mL of water to obtain a mixed solution, add 10 g of coal powder to the mixed solution, stir and swell at 30° C. for 3 h to obtain a swollen coal sample;

[0049] Step 102. Add 80 mL of ammonium persulfate aqueous solution with a concentration of 0.30 g / mL dropwise to the swollen coal sample described in step 101 in a 3° C. ice-water bath with stirring at a rate of 2 mL / min. After the dropwise addition is completed, Continue to stir for 6 hours under the condit...

Embodiment 2

[0061] The method for jointly preparing carbon micronanotubes and N-doped porous carbon / nickel-manganese oxide in this embodiment comprises the following steps:

[0062] Step 1. Prepare coal-based polyaniline by in-situ polymerization according to the method disclosed in "A N-doped porous carbon / NiO composite material and its preparation method" with application number 201510464778.2; specifically:

[0063] Step 101, uniformly mix 10 g of aniline, 30 mL of concentrated hydrochloric acid (37% in mass concentration) and 50 mL of water to obtain a mixed solution, add 10 g of coal powder to the mixed solution, and stir and swell at 35°C for 2 hours to obtain a swollen coal sample;

[0064] Step 102. Add 80 mL of ammonium persulfate aqueous solution with a concentration of 0.30 g / mL dropwise to the swollen coal sample described in step 101 under agitation in an ice-water bath at 0° C. at a rate of 3 mL / min. Continue to stir for 8 hours under the condition of an ice-water bath at 0°...

Embodiment 3

[0073] The method for jointly preparing carbon micronanotubes and N-doped porous carbon / nickel-manganese oxide in this embodiment comprises the following steps:

[0074] Step 1. Prepare coal-based polyaniline by in-situ polymerization according to the method disclosed in "A N-doped porous carbon / NiO composite material and its preparation method" with application number 201510464778.2; specifically:

[0075] Step 101. Mix 10g of aniline, 25mL of concentrated hydrochloric acid (37% in mass concentration) and 55mL of water to obtain a mixed solution, add 10g of coal powder to the mixed solution, stir and swell at 25°C for 2.5h to obtain a swollen coal sample ;

[0076] Step 102. Add 60 mL of ammonium persulfate aqueous solution with a concentration of 0.40 g / mL dropwise to the swollen coal sample described in step 101 under stirring in an ice-water bath at 5° C. at a rate of 1.5 mL / min, and the dropwise addition is complete Then continue to stir for 7 hours under the condition o...

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Abstract

The invention discloses a combined preparation method of carbon micro-nanotubes and N-doped porous carbon / nickel manganese oxide. The method comprises the following steps: 1, preparing coal-based polyaniline; 2, putting nickel acetate and the coal-based polyaniline into anhydrous ethanol to obtain paste; 3, coating a quartz plate with a nickelocene solution in a spinning way; 4, putting the paste into a first temperature area of a horizontal tube type atmosphere furnace, and putting the quartz plate into a second temperature area; 5, introducing nitrogen into the furnace, heating up, collecting the product carbon micro-nanotubes on the quartz plate, and collecting the product in a quartz boat of the first temperature area; 6, treating the product in the quartz boat; 7, carrying out suction filtration and then washing, carrying out vacuum drying, and calcining to obtain the N-doped porous carbon / nickel manganese oxide. According to the method, hydrogen-containing gaseous hydrocarbon generated by cracking is effectively utilized in a pyrolysis process of the coal-based polyaniline, and is enabled to crack on the surface of nickel and deposit to form the carbon micro-nanotubes; furthermore, alpha-MnO2 and NiMn2O4 are also generated while the nickel is oxidized into NiO, so that the capacitance performance of a composite material is comprehensively improved.

Description

technical field [0001] The invention belongs to the cross-technical field of energy storage materials and coal material utilization, and specifically relates to a method for jointly preparing carbon micro-nano tubes and N-doped porous carbon / nickel-manganese oxide. Background technique [0002] Supercapacitors not only have the characteristics of high power density, short charging time, high charge and discharge efficiency, long cycle life, and can work at ultra-low temperatures as electrostatic capacitors, but also have the energy density closer to lithium batteries, so they become Research hotspots in the field of energy storage. The electrode materials of supercapacitors directly affect the performance of supercapacitors, so the preparation of electrode materials with high specific capacitance, high specific power, high specific energy, and stable charge and discharge becomes the key to solving the problem. At present, the electrode materials of commercialized supercapac...

Claims

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Application Information

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IPC IPC(8): C01B32/05C01B32/162C01G53/00C01G45/02H01G11/32H01G11/36H01G11/46B82Y30/00B82Y40/00
CPCH01G11/32H01G11/36H01G11/46B82Y30/00C01G45/02C01G53/40C01B2202/36C01P2002/72C01P2004/04C01P2004/03C01P2004/80C01P2006/16C01P2006/12C01P2006/40Y02E60/13
Inventor 汪晓芹赵捷李侃社熊善新宫铭蔡会武彭飞李巧琴杨玉飞张润兰陈创前褚佳吴伯华闫兰英周安宁
Owner XIAN UNIV OF SCI & TECH
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