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Electrode material, preparation method and application thereof

A technology of electrode materials and raw materials, applied in the field of electrode material preparation and electrochemistry, can solve the problems of high power density, low power density, insufficient energy density, etc.

Active Publication Date: 2021-12-28
ANHUI UNIVERSITY OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional batteries have high energy density and low power density, while traditional capacitors are just the opposite, with high power density but insufficient energy density

Method used

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  • Electrode material, preparation method and application thereof
  • Electrode material, preparation method and application thereof
  • Electrode material, preparation method and application thereof

Examples

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preparation example Construction

[0058] The present invention also provides a kind of preparation method of electrode material, comprises the following steps:

[0059] S1. Weighing raw materials according to the ratio of parts by mass;

[0060] S2. Grind the coal tar pitch, potassium hydroxide and nano-calcium oxide to a particle size of less than 180 mesh, and then mix them uniformly to obtain a mixed sample;

[0061] S3, transfer the mixed sample in S2 to the corundum boat, then put the corundum boat into the tube furnace, and feed inert gas;

[0062] S4, setting the heating program, heating and cooling naturally;

[0063] S5, taking the cooled corundum boat out of the tube furnace, and pickling the fired carbon material;

[0064] S6, separating the solid and liquid in the above mixed hydrochloric acid solution, and washing the solid with distilled water for 3-4 times until the pH of the solid is 6-7;

[0065] S7, drying to obtain the product.

[0066] As a preferred embodiment, the inert gas in step S3...

Embodiment 1

[0076] Such as figure 1 As shown, the electrode material preparation process of the present embodiment is as follows:

[0077] S1. Weigh raw materials according to parts by mass: 2 parts of coal tar pitch, 5 parts of nano calcium oxide, 10 parts of potassium hydroxide;

[0078] S2. Grind the coal tar pitch, potassium hydroxide and nano-calcium oxide to a particle size of less than 180 mesh, and then mix them uniformly to obtain a mixed sample;

[0079] S3, transfer the mixed sample in S2 to the corundum boat, then put the corundum boat into the tube furnace, and feed inert gas, the inert gas is preferably argon, and the flow rate of argon is 35ml / min;

[0080] S4. Set the heating program: the initial temperature is 20°C, and the heating rate is 4°C / min. When the temperature rises to 150°C, keep it warm for 30 minutes, then raise the temperature to 850°C at 4°C / min, keep it warm for 60 minutes, and finally cool down naturally ;

[0081] S5. Take out the cooled corundum boat ...

Embodiment 2

[0085] The difference between this embodiment and Example 1 is that the mass parts of raw materials are: 2 parts of coal tar pitch, 4 parts of nano-calcium oxide, and 10 parts of potassium hydroxide. The other step parameters and process conditions are the same as in Example 1. This implementation The prepared electrode material is denoted as HPC 2-4-10 .

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Abstract

The invention provides an electrode material, a preparation method and its application. The electrode material uses coal tar pitch as a carbon source, uses nano-calcium oxide as a template, and uses potassium hydroxide as an activator; it is prepared through the following steps: S1, Weigh the raw materials according to the number of parts by mass; S2, grind the raw materials into powder and mix them; S3, put the mixed sample into the tube furnace and feed inert gas; S4, heat carbonization; S5, pickling to remove nano-calcium oxide; S6: Washing with distilled water; S7, drying the electrode material; the electrode material prepared by the method of the present invention has the characteristics of large specific surface area, appropriate pore size distribution range and high oxygen element content, these characteristics make the specific surface area utilization rate of the electrode material high, and the ratio is high. High capacitance, high energy density, and good cycle performance can be used as electrode materials for supercapacitors.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, in particular to the technical field of electrode material preparation, and particularly relates to an electrode material, a preparation method and an application thereof. Background technique [0002] Supercapacitor is a new type of energy storage device. Supercapacitor, also known as electrochemical capacitor, is a brand new capacitor based on the theory of interface electric double layer. Traditional batteries have high energy density and low power density, while traditional capacitors are just the opposite, with high power density but insufficient energy density. The performance of supercapacitors takes into account the characteristics of both, effectively filling the gap between capacitors and batteries. [0003] Electrode material is the key material for supercapacitors, electrode material can use porous carbon, paper (Q Wang, JYan, T Wei, et al.Two-dimensional mesoporous carbon s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/44H01G11/86
CPCH01G11/24H01G11/30H01G11/44H01G11/86Y02E60/13
Inventor 王晓婷朱博文金亦琦何孝军马浩汪静娴
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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