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

A technology for 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 achieves good electrochemical performance, good conductivity, high The effect of specific surface area

Active Publication Date: 2015-11-25
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 candle carbon-doped metal compound electrode active material on current collector and application of candle carbon in preparation of electrode active material
  • Method for preparing candle carbon-doped metal compound electrode active material on current collector and application of candle carbon in preparation of electrode active material
  • Method for preparing candle carbon-doped metal compound electrode active material on current collector and application of candle carbon in preparation of electrode active material

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Take 0.001molCo(Ac) 2 , 0.012g candle carbon, 0.004molCH3 CSNH 2 , using absolute ethanol as a solvent to prepare a 30ml dispersion. The pretreated area is 1cm 2 The nickel foam is placed in a PTFE-lined high-pressure stainless steel reactor, and then the prepared dispersion is added. Then the reactor was placed in an oven at 180°C for 7h. 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 oven at 50°C.

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

[0047] figure 2 It is the SEM image of the electrode active material prepared on foamed nickel; Figure 5 The CV diagram...

Embodiment 2

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

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

[0055] Figure 4 It is the SEM image of the electro...

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Abstract

The invention discloses a method for preparing a candle carbon-doped metal compound electrode active material on a current collector and an application of the candle carbon in preparation of the electrode active material. The method comprises the following steps: (1) dispersing a metal salt, a reducing agent and candle carbon into a solvent to prepare a turbid liquid; and (2) putting the current collector into a reaction kettle, adding the turbid liquid obtained from the step (1) and fully carrying out hydrothermal reaction. The invention further discloses the application of the candle carbon in preparation of the electrode active material, and the application of the prepared candle carbon-doped metal compound electrode active material in preparation of a super capacitor electrode. The candle carbon is compounded with a metal compound; the prepared electrode active material has relatively high specific surface area; the obtained electrode has relatively good electrochemical property; and the candle carbon is uniform in particle size, also has good electrical conductivity, is an ideal carbon nano material compounded with the metal compound, and is hoped 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 candle carbon in preparing the electrode active material. Background technique [0002] With the advancement of science and technology, the development of social economy and the rapid growth of population, the consumption of energy is also increasing. The depletion of non-renewable resources urgently requires renewable resources to play their role as substitutes, and at the same time requires the sustainable development of non-renewable resources. , effective use, and give full play to its potential. The existing traditional energy system can no longer meet the development needs of modern industry, agriculture, forestry, etc. Fuel and coal resources are not only non-renewable, but also produce a large amount of CO in the process of use and consumption. 2 , SO 2 and other harmful substances, ...

Claims

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Application Information

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