Preparation method and application of porous carbon material co-doped with N, S and P

A porous carbon material and co-doping technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problem of large equivalent series resistance of battery components, lower performance, lower energy storage efficiency and cycle life, etc. problem, to achieve the effect of abundant raw materials and low cost

Inactive Publication Date: 2017-09-22
YANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the energy storage method of the battery involves the structural change of the electrode material, and the storage and output of electric energy are limited by the mass transfer and the chemical reaction rate, so that the battery element has a large equivalent series resistance, so it cannot be used at a high speed. charge and discharge, reducing its performance at high power
In addition, under high-power operating conditions, a large amount of electrical energy in the battery will be converted into heat energy, reducing energy storage ef...

Method used

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  • Preparation method and application of porous carbon material co-doped with N, S and P
  • Preparation method and application of porous carbon material co-doped with N, S and P
  • Preparation method and application of porous carbon material co-doped with N, S and P

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Embodiment 1

[0029] (1) Carbonization: Take the dried honeycomb raw material in a quartz crucible and heat it in a tube furnace. In a nitrogen-enclosed environment, raise the temperature to 400°C at a heating rate of 5°C / min. The carbonization time is 1 h, then cool down. After cooling to normal temperature, take it out to obtain a black honeycomb carbonized material and pulverize it to obtain a honeycomb carbonized powder.

[0030] (2) Impregnation: According to the alkali-carbon ratio of 5:1, weigh 10g of KOH in a beaker, then weigh 2g of honeycomb carbonized material and mix it, add an appropriate amount of distilled water, stir to mix evenly, and then place it in an oven at 100°C for drying , Obtain honeycomb carbonized powder impregnated with KOH.

[0031] (3) Activation: The honeycomb carbonized powder impregnated with KOH was placed in a nickel crucible and placed in a tube furnace. The mixture was heated to 700 °C at a rate of 5 °C / min under a nitrogen atmosphere and then kept for ...

Embodiment 2

[0034] (1) Carbonization: Take the dried honeycomb raw material in a quartz crucible and heat it in a tube furnace. In a nitrogen-enclosed environment, raise the temperature to 400°C at a heating rate of 5°C / min. The carbonization time is 1 h, then cool down. After cooling to normal temperature, take it out to obtain a black honeycomb carbonized material and pulverize it to obtain a honeycomb carbonized powder.

[0035] (2) Impregnation: According to the alkali-carbon ratio of 5:1, weigh 10g of KOH in a beaker, then weigh 2g of honeycomb carbonized material and mix it, add an appropriate amount of distilled water, stir to mix evenly, and then place it in an oven at 100°C for drying , Obtain honeycomb carbonized powder impregnated with KOH.

[0036] (3) Activation: The honeycomb carbonized powder impregnated with KOH was placed in a nickel crucible and placed in a tube furnace. The mixture was heated to 800 °C at a rate of 5 °C / min under a nitrogen atmosphere and then kept for ...

Embodiment 3

[0039] (1) Carbonization: Take the dried honeycomb raw material in a quartz crucible and heat it in a tube furnace. In a nitrogen-enclosed environment, raise the temperature to 400°C at a heating rate of 5°C / min. The carbonization time is 1 h, then cool down. After cooling to normal temperature, take it out to obtain a black honeycomb carbonized material and pulverize it to obtain a honeycomb carbonized powder.

[0040] (2) Impregnation: According to the alkali-carbon ratio of 5:1, weigh 10g of KOH in a beaker, then weigh 2g of honeycomb carbonized material and mix it, add an appropriate amount of distilled water, stir to mix evenly, and then place it in an oven at 100°C for drying , Obtain honeycomb carbonized powder impregnated with KOH.

[0041](3) Activation: The honeycomb carbonized powder impregnated with KOH was placed in a nickel crucible and placed in a tube furnace. The mixture was heated to 900 °C at a rate of 5 °C / min under nitrogen atmosphere and then kept for 2 h...

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Abstract

The invention relates to a preparation method and application of a porous carbon material co-doped with N, S and P, and belongs to the technical field of production of a supercapacitor electrode material. The preparation method comprises the steps of heating and pre-processing a dried honeycomb in a nitrogen environment, and performing cooling and smashing to obtain a honeycomb carbonized powder; performing drying after uniformly mixing the honeycomb carbonized powder and an activating agent, heating and activating the mixture under a condition of nitrogen atmosphere, bleaching the product to a neutral condition after cooling, and performing drying to obtain the porous carbon material co-doped with N, S and P. The porous carbon material co-doped with N, S and P is rich in raw material and low in cost and can be recycled; and moreover, an absorbent can be used for the absorption and separation process of an air-liquid pollutant, control of air pollution and water pollution is facilitated, and the win-win effect of utilizing solid waste and controlling air pollution and water pollution is obtained.

Description

technical field [0001] The invention belongs to the technical field of production of supercapacitor electrode materials. Background technique [0002] In recent years, the excessive use of fossil energy has led to a rapid increase in global carbon emissions, further causing the greenhouse effect and global warming, and destroying the ecological balance that has been maintained for a long time; in addition, the continuous development of advanced industries, The global demand for energy has not decreased but increased, further exacerbating the contradiction between the two. Therefore, how to reduce the use of fossil fuels and at the same time develop new and sustainable alternative energy has become the current people's consensus. In addition to being committed to the development of clean and pollution-free new energy and alternative energy, the development of energy storage components is also an important way to solve current energy problems. There are many types of energy ...

Claims

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Application Information

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IPC IPC(8): H01G11/32H01G11/86H01G11/26
CPCY02E60/13H01G11/32H01G11/26H01G11/86
Inventor 庞欢严延马静怡骆雨晴薛怀国
Owner YANGZHOU UNIV
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