Modified activated carbon composite material for negative electrode of lead-carbon battery, preparation method of modified activated carbon composite material, and lead-carbon battery

A composite material and activated carbon technology, applied in lead-acid battery electrodes, battery electrodes, lead-acid batteries, etc., can solve the problems of low content, insignificant effect, and not fully applied hydrogen evolution inhibitor, and achieve the improvement of hydrogen evolution potential without difficulty. The effect of falling off and binding tightly

Active Publication Date: 2020-08-07
SHANDONG OBO NEW MATERIAL CO LTD
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  • Abstract
  • Description
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Problems solved by technology

Although adding an appropriate hydrogen evolution inhibitor to the carbon material can theoretically solve the hydrogen evolution problem of lead-carbon batteries, it can only have a certain effect of inhibiting hydrogen evolution by simply mixing it into the negative electrode of lead-carbon batteries, and it does not reach the hydrogen evolution inhibitor. The complete application of these substances, and the allowable content of these substances as additives in the plate is very low, so the effect is not obvious

Method used

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  • Modified activated carbon composite material for negative electrode of lead-carbon battery, preparation method of modified activated carbon composite material, and lead-carbon battery
  • Modified activated carbon composite material for negative electrode of lead-carbon battery, preparation method of modified activated carbon composite material, and lead-carbon battery
  • Modified activated carbon composite material for negative electrode of lead-carbon battery, preparation method of modified activated carbon composite material, and lead-carbon battery

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preparation example Construction

[0061] The present invention also provides a kind of preparation method of activated carbon composite material, comprises the following steps:

[0062] 1) Mix activated carbon, acid and solvent, and perform modification reaction to obtain modified activated carbon;

[0063] 2) Grinding the modified activated carbon obtained in the above steps to obtain an activated carbon composite material.

[0064] In the present invention, the selection, composition and structure of the materials in the above-mentioned preparation method, as well as the corresponding optimization principles, can preferably correspond to the selection, composition and structure of the aforementioned activated carbon composite materials, and the corresponding optimization principles, and will not be repeated here. A repeat.

[0065] In the invention, the activated carbon, the acid and the solvent are firstly mixed, and after modification reaction, the modified activated carbon is obtained.

[0066] In princ...

Embodiment 1

[0095] Take 500 g of Haike petroleum coke, put it into a rotary furnace for high-temperature carbonization, raise it to 800 °C at a rate of 10 °C / min, and treat it at high temperature for 60 min in a nitrogen atmosphere to obtain initial activated carbon. Put the initial activated carbon into the nickel pot, mix with 80g potassium hydroxide, mix evenly and send it to the tube furnace for high temperature treatment, N 2 Under the atmosphere, the temperature was also increased to 800°C at a rate of 10°C / min, and the reaction was maintained at 800°C for 1h.

[0096] The obtained porous carbon was washed with water, acid-washed, washed with water to pH 7-8, acid-washed, stirred in 5% HCl for 2 hours, washed with suction to neutrality, and vacuum-dried at 120° C. for 24 hours to obtain a sample. Put the sample into a mixture of alcohols and dilute nitric acid, the solution is about 1L, mix well, then modify the reaction at 80-130°C for more than 2 hours, filter and dry to obtain mo...

Embodiment 2

[0112] Take 500 g of Haike petroleum coke, put it into a rotary furnace for high-temperature carbonization, raise it to 800 °C at a rate of 10 °C / min, and treat it at high temperature for 60 min in a nitrogen atmosphere to obtain initial activated carbon. Put the initial activated carbon into the nickel pot, mix with 80g potassium hydroxide, mix evenly and send it to the tube furnace for high temperature treatment, N 2 Under the atmosphere, the temperature was also increased to 800°C at a rate of 10°C / min, and the reaction was maintained at 800°C for 1h.

[0113] The obtained porous carbon was washed with water, acid-washed, washed with water to pH 7-8, acid-washed, stirred in 5% HCl for 3 hours, washed with suction to neutrality, and vacuum-dried at 120° C. for 24 hours to obtain a sample. Put the sample into the mixed solution of alcohols and dilute nitric acid, the solution is about 1L, mix well, then modify the reaction at 80-130℃ for more than 3 hours, filter and dry to o...

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Abstract

The invention provides an activated carbon composite material, which comprises activated carbon and nickel carbide compounded on the activated carbon. By adopting a compounding mode, nickel carbide isuniformly dispersed on the surface of the activated carbon, and the hydrogen evolution potential of the carbon material on the surface of the lead is improved by adding the nickel carbide, so that the hydrogen evolution inhibition function of the activated carbon is effectively improved. According to the invention, activated carbon is modified to improve the hydrophilicity of the activated carbonis improved, and nickel carbide for inhibiting hydrogen evolution reaction is loaded, so that the compactness and the charging performance of the active lead plaster of the lead-carbon battery are improved, the impedance of the lead plaster is reduced, and the falling of active carbon in the charging and discharging process is avoided; and the hydrogen evolution potential of a carbon material onthe surface of lead is improved by adding nickel carbide, and the failure of the battery is delayed.

Description

technical field [0001] The invention belongs to the technical field of lead-carbon materials, and relates to an activated carbon composite material and a preparation method thereof, and a lead-carbon battery, in particular to a modified activated carbon composite material for the negative electrode of the lead-carbon battery, a preparation method thereof, and a lead-carbon battery. Background technique [0002] With the continuous advancement of science and technology, the global energy storage battery market is growing rapidly. Lead-acid battery has been a traditional energy storage battery for more than 160 years, and it still plays a pivotal role in today's energy storage field. Therefore, lead-acid battery is also the most mature battery among all energy storage batteries at present. High performance, high battery recovery rate and other advantages, it is the first choice for energy storage battery applications. However, the disadvantages of lead-acid batteries, such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/583H01M4/14H01M10/06
CPCH01M4/14H01M4/366H01M4/583H01M10/06Y02E60/10
Inventor 朱振涛赵永彬郑申棵马立军
Owner SHANDONG OBO NEW MATERIAL CO LTD
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