Preparation method of energy storage carbon material, supercapacitor and energy storage carbon material

A carbon material, energy storage technology, applied in hybrid capacitor electrodes, chemical instruments and methods, carbon compounds, etc. problems, to achieve the effect of reducing the preparation cost, improving the specific capacity and rate performance, and improving the specific capacity and rate performance

Active Publication Date: 2020-09-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the methods for preparing energy storage carbon materials all need to add additional templates, and the oil slurry for preparing carbon materials needs to be desolidified, which is difficult and expensive to process, which further increases the cost of preparing energy storage carbon materials
In addition, the energy storage carbon materials prepared by the existing technology have low energy density and low initial charge and discharge efficiency

Method used

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  • Preparation method of energy storage carbon material, supercapacitor and energy storage carbon material
  • Preparation method of energy storage carbon material, supercapacitor and energy storage carbon material
  • Preparation method of energy storage carbon material, supercapacitor and energy storage carbon material

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Embodiment 1

[0039] This embodiment provides a method for preparing energy storage carbon materials using catalytic cracking oil slurry, which includes using catalytic oil slurry with the composition properties shown in Table 1 as a raw material, and the particle size distribution of the raw material is referred to figure 1 shown. Carry out carbonization activation under a nitrogen atmosphere, use SP80 as a surfactant, and the addition amount is 2% of the mass of the raw material catalytic oil slurry. In this embodiment, potassium hydroxide is used as the alkaline reagent, and the addition amount of the alkaline reagent is the mass of the raw material catalytic oil slurry. 30% of. In this embodiment, the first-stage carbonization activation is not performed, and the second-stage carbonization activation temperature is set to 700° C., and the carbonization activation reaction time is 2 hours.

[0040] Table 1 Main properties of catalytic cracking feedstock.

[0041]

[0042]

Embodiment 2

[0044]This embodiment provides a method for preparing energy storage carbon materials by using catalytic cracking oil slurry. The raw material composition and particle size distribution are the same as those in Embodiment 1. Carry out carbonization activation under nitrogen atmosphere, with SP80 surface active agent, add-on is 5% of raw material catalytic oil slurry addition quality, present embodiment uses potassium hydroxide as alkali reagent, and the add-on of alkaline reagent is raw material catalytic oil slurry quality. 60%. In this embodiment, the first-stage carbonization activation is not performed, and the second-stage carbonization activation temperature is set to 700° C., and the carbonization activation reaction time is 2 hours.

Embodiment 3

[0046] Compared with the method for preparing energy storage carbon materials provided in Example 1, the only difference is that a carbonization activation step is added before the second-stage carbonization activation reaction, and the temperature of the first-stage carbonization activation reaction is set to 400°C, and the first-stage carbonization activation reaction The time is 0.5h.

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Abstract

The invention discloses a preparation method of an energy storage carbon material, a supercapacitor and the energy storage carbon material. According to the preparation method, solid particles in catalytic slurry oil are used as a natural template agent, under the atmosphere of inert gas, the template agent is reactedwith an alkali reagent, and a hierarchical pore structure of the energy storage carbon material is jointly constructed through a subsequent acid pickling reaction and a catalytic slurry oil alkali etching reaction, so that the specific capacity and the rate capability of the material are favorably improved. The method comprises steps: setting a sectional carbonization activation reaction process:low-temperature carbonization can effectively regulate and control the compositionof a catalytic slurry oil family; reducing saturated hydrocarbon components to increase the content of macromolecular polycyclic aromatic hydrocarbon, it is beneficial for formation of a carbon material with a uniform layered structure; carrying out combination with two-stage high-temperature alkali activation pore-forming and subsequent template agent pickling and removing processes, so that thepore size distribution and the specific surface area of the energy storage carbon material can be directionally controlled to a certain extent. The energy storage carbon material provided by the invention can be used as an electrode material of a supercapacitor for rapid charging and discharging, and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of electrode material preparation, in particular to a method for preparing an energy storage carbon material, a supercapacitor and an energy storage carbon material. Background technique [0002] At present, the methods for preparing energy storage carbon materials all need to add additional templates, and the oil slurry for preparing carbon materials needs to be desolidified, which is difficult and expensive to process, which further increases the cost of preparing energy storage carbon materials. In addition, the energy storage carbon materials prepared by the prior art have low energy density and low initial charge and discharge efficiency. [0003] In view of this, the present invention is proposed. Contents of the invention [0004] The object of the present invention is to provide a preparation method of energy storage carbon material, supercapacitor and energy storage carbon material to solve the a...

Claims

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Application Information

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IPC IPC(8): C01B32/348C01B32/318H01G11/24H01G11/34H01G11/44
CPCC01B32/348C01B32/318H01G11/24H01G11/34H01G11/44Y02E60/13
Inventor 雷杰李康韩海波李治
Owner CHINA PETROLEUM & CHEM CORP
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