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Method for preparing metal compound electrode active material doped with candle carbon on current collector and application of candle carbon in preparation of electrode active material

A technology of electrode active materials and metal compounds, which is applied in the application field of preparing electrode active materials, can solve the problems of poor conductivity, poor conductivity of oxides, easy agglomeration and high capacity, etc., and achieve good electrochemical performance, good conductivity, high The effect of specific surface area

Active Publication Date: 2018-05-15
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of oxides such as poor electrical conductivity and easy agglomeration make it difficult to fully exert their high capacity. This requires us to enhance their dispersion and improve the utilization of active materials by providing carriers.
[0005] At present, metal oxides and sulfides are widely used in supercapacitor electrode materials. These materials have relatively high specific capacity, but their own conductivity is relatively poor. With multiple charge and discharge cycles, the structure is easily damaged. Destroyed and collapsed, causing a sharp drop in specific capacity

Method used

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  • Method for preparing metal compound electrode active material doped with candle carbon on current collector and application of candle carbon in preparation of electrode active material
  • Method for preparing metal compound electrode active material doped with candle carbon on current collector and application of candle carbon in preparation of electrode active material
  • Method for preparing metal compound electrode active material doped with candle carbon on current collector and application of candle carbon in preparation of electrode active material

Examples

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Effect test

Embodiment 1

[0045] Take 0.001mol Co(Ac) 2 , 0.012g candle carbon, 0.004molCH 3 CSNH 2 , Use absolute ethanol as the solvent to prepare a 30ml dispersion. The pretreated area is 1cm 2 The foamed nickel is placed in a high-pressure stainless steel reactor lined with PTFE, and then the prepared dispersion is added. Then the reaction kettle was placed in an oven at 180°C for 7 hours. After the reaction is completed, after the reaction kettle is naturally cooled, the nickel foam is taken out, washed with absolute ethanol, and dried in a blast drying oven at 50°C.

[0046] The electrode obtained above was used as the working electrode, the Hg / HgO electrode as the reference electrode, the Pt mesh electrode as the counter electrode, and the 3mol / L KOH solution as the electrolyte to assemble a three-electrode system tester for electrochemical performance.

[0047] figure 2 SEM image of electrode active material prepared on foamed nickel; Figure 5 It is a CV diagram (scanning speed: 5mv / s) of the ele...

Embodiment 2

[0053] Take 0.001mol Co(Ac) 2 , 0.001mol Ni(NO 3 ) 2 , 0.012g candle carbon, 0.004molCH 3 CSNH 2 , Use absolute ethanol as the solvent to prepare a 30ml dispersion. The pre-treated area is about 1cm 2 The carbon felt is placed in a high-pressure stainless steel reactor lined with PTFE, and then the prepared dispersion is added. Then the reaction kettle was placed in an oven at 180°C for 7 hours. After the reaction is completed, the reactor is allowed to cool naturally, the carbon felt is taken out, washed with absolute ethanol, and dried in a blast drying oven at 50°C.

[0054] The obtained carbon felt deposited with the electrode active material was used as the working electrode, the Hg / HgO electrode as the reference electrode, the Pt mesh electrode as the counter electrode, and the 3mol / L KOH solution as the electrolyte to assemble a three-electrode system tester for electrochemical performance.

[0055] Figure 4 SEM image of electrode active material prepared on carbon felt; ...

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Abstract

The invention discloses a method for preparing a metal compound electrode active material doped with candle carbon on a current collector and the application of candle carbon in the preparation of the electrode active material. The method comprises the following steps: 1) dispersing a metal salt, a reducing agent, and candle carbon in 2) Put the current collector into the reaction kettle, add the suspension obtained in step 1), and fully hydrothermally react. Application of candle carbon in the preparation of electrode active materials. Application of the prepared metal compound electrode active material doped with candle carbon in the preparation of supercapacitor electrodes. In the invention, the candle charcoal is compounded with the metal compound, and the prepared electrode active material has a higher specific surface area, and the obtained electrode has better electrochemical performance. Moreover, candle carbon itself has a uniform particle size and good electrical conductivity. It is an ideal carbonaceous nanomaterial compounded with metal compounds and is expected to be applied on a large scale.

Description

Technical field [0001] The invention relates to a method for preparing a metal compound electrode active material doped with candle carbon on a current collector and the application of the candle carbon in preparing an electrode active material. Background technique [0002] With the advancement of science and technology, the development of social economy and the rapid population growth, the consumption of energy is also increasing. The exhaustion of non-renewable resources urgently requires renewable resources to play their role as substitutes, and also requires the sustainability of non-renewable resources. , Make effective use of it, and give full play to its potential. The existing traditional energy systems can no longer meet the development needs of modern industry, agriculture, forestry, etc. Not only are fuel and coal carbon resources non-renewable, they will also generate a large amount of CO during use and consumption. 2 , SO 2 And other harmful substances, causing seri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/86
Inventor 陈新丽邓洪
Owner SOUTH CHINA NORMAL UNIVERSITY