A kind of preparation method of carbon negative electrode plate

A technology of negative electrode and electrode plate, applied in the field of preparation of carbon negative electrode plate, can solve the problems of not being able to obviously improve the cycle performance of lead-carbon super battery, not supplying current, etc., so as to improve chemical stability, inhibit hydrogen evolution, process stable effect

Active Publication Date: 2019-11-08
晋江瑞碧科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, simply connecting the electrodes of the supercapacitor and the electrodes of the lead-acid battery in parallel cannot significantly improve the cycle performance of the lead-carbon super battery, which is mainly restricted by two problems: In the initial stage of discharge, the electrode current is mainly provided by the lead negative electrode of the lead-acid battery , the carbon electrode of the capacitor basically does not provide current; when charging, the lead negative electrode of the lead-acid battery basically does not provide current, and the electrode current mainly comes from the carbon electrode of the capacitor

Method used

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  • A kind of preparation method of carbon negative electrode plate

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Embodiment 1

[0033] 1) Preparation of polyaniline / activated carbon composites

[0034] Mix 2.0 g of activated carbon, 0.5 g of aniline, and 20 mL of 0.5 mol / L hydrochloric acid under normal temperature magnetic stirring to obtain a mixed solution A. Under the condition of magnetic stirring, add 25 mL of ammonium persulfate solution with a concentration of 0.5 mol / L to the above mixture A at a rate of 0.01 mL / s. After the addition, continue to react for 24 hours at a temperature of 0°C . After the reaction, the precipitate was filtered, washed repeatedly with 1mol / L hydrochloric acid and acetone, and dried in vacuum at 50°C for 24 hours to obtain a polyaniline / activated carbon composite material.

[0035] 2) Preparation of nitrogen-doped porous activated carbon

[0036] The polyaniline / activated carbon composite was soaked in 0.5% NH 4 In the Cl solution, shake in a water-bath shaker at 80°C for 5h, and dry in a blast drying oven at 60°C for 24h. The above-mentioned fibers were placed i...

Embodiment 2

[0044] 1) Preparation of polyaniline / activated carbon composites

[0045] Mix 2.0 g of activated carbon, 0.5 g of aniline, and 20 mL of 0.5 mol / L hydrochloric acid under normal temperature magnetic stirring to obtain a mixed solution A. Under the condition of magnetic stirring, add 25 mL of ammonium persulfate solution with a concentration of 0.5 mol / L to the above mixture A at a rate of 0.01 mL / s. After the addition, continue to react for 24 hours at a temperature of 0°C . After the reaction, the precipitate was filtered, washed repeatedly with 1mol / L hydrochloric acid and acetone, and dried in vacuum at 50°C for 24 hours to obtain a polyaniline / activated carbon composite material.

[0046] 2) Preparation of nitrogen-doped porous activated carbon

[0047] The polyaniline / activated carbon composite was soaked in 0.5% NH 4 In the Cl solution, shake in a water-bath shaker at 80°C for 5h, and dry in a blast drying oven at 60°C for 24h. The above-mentioned fibers were placed i...

Embodiment 3

[0055] 1) Preparation of polyaniline / activated carbon composites

[0056] Mix 2.0 g of activated carbon, 0.5 g of aniline, and 20 mL of 0.5 mol / L hydrochloric acid under normal temperature magnetic stirring to obtain a mixed solution A. Under the condition of magnetic stirring, add 25 mL of ammonium persulfate solution with a concentration of 0.5 mol / L to the above mixture A at a rate of 0.01 mL / s. After the addition, continue to react for 24 hours at a temperature of 0°C . After the reaction, the precipitate was filtered, washed repeatedly with 1mol / L hydrochloric acid and acetone, and dried in vacuum at 50°C for 24 hours to obtain a polyaniline / activated carbon composite material.

[0057] 2) Preparation of nitrogen-doped porous activated carbon

[0058] Soak the polyaniline / activated carbon composite in a mass concentration of 1% NH 4 In the Cl solution, shake in a water-bath shaker at 80°C for 5h, and dry in a blast drying oven at 60°C for 24h. The above-mentioned fibe...

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Abstract

The invention provides a preparation method of a carbon negative plate electrode, which comprises the following steps: preparation of polyaniline / activated carbon composite material, preparation of nitrogen-doped porous activated carbon, preparation of TiC / yttria / nitrogen-doped porous activated carbon ternary composite material, and preparation of a carbon negative plate electrode. The preparationmethod has the advantages that the hydrogen evolution rate of the carbon negative plate electrode is reduced, the specific capacitance is increased, the problem that the working potentials of the carbon electrode and the lead electrode in the super lead-acid battery are not matched, the hydrogen evolution at the end of charging is serious and the like are solved, and the cycle life of the super lead acid battery is increased. The carbon negative plate electrode is stable in production process, easy to operate, reliable in quality, low in cost, light in weight, recyclable, non-polluting, etc.The material of the carbon negative plate electrode of the super lead acid battery meets the basic requirements of commercialization.

Description

technical field [0001] The invention relates to a preparation method of a carbon negative electrode plate, which belongs to the field of composite porous materials and electrochemical materials. Background technique [0002] With the increasing performance requirements of human society for power energy, lead-acid batteries, as an important power source for electric vehicles, need to be improved urgently in terms of specific capacity, charge acceptance and cycle life. In this context, super batteries emerged as the times require and have received extensive attention and research. The so-called super battery, also known as lead-carbon super battery, is a new type of hybrid energy storage power source, which is composed of an asymmetric super capacitor and a lead-acid battery, and has the advantages of both capacitor and battery dual-function energy storage. It not only maintains the high energy density of power batteries, but also has the characteristics of high power density...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/34H01G11/46H01G11/86H01M4/20H01M10/06B82Y30/00
CPCB82Y30/00H01G11/30H01G11/34H01G11/46H01G11/86H01M4/20H01M10/06Y02E60/10
Inventor 胡家朋赵瑨云徐婕付兴平
Owner 晋江瑞碧科技有限公司
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