Lead-carbon battery negative electrode active material formula slurry as well as preparation method and application thereof

A negative electrode active material, lead-carbon battery technology, applied in the direction of active material electrodes, battery electrodes, lead-acid batteries, etc., can solve the problems of uneven distribution of negative electrode active materials, poor physical stability and dispersion, and poor drop strength of negative plates , to achieve the effect of improving drop strength, good physical stability and dispersion, and good sealing reaction efficiency

Inactive Publication Date: 2022-02-01
江苏海宝电池科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a lead-carbon battery negative electrode active material formula slurry and its preparation method and application, to solve the problem of uneven distribution, poor physical stability and dispersibility of the existing lead-carbon battery negative electrode active material, and low temperature conditions. The technical problems of poor performance consistency and low battery service life; at the same time, solve the technical problems of loose negative electrode active material added with carbon materials, which makes the negative plate made of poor drop strength and high plate scrap rate in the battery manufacturing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] S1, at first, be 1.5% spherical activated carbon relative to the mass percentage of lead powder, graphene that is 0.2% relative to the mass percentage of lead powder, calcium sulfate that is 1.2% relative to the mass percentage of lead powder, relative to the mass percentage of lead powder Add 0.25% Norwegian lignin, first-grade natural rosin powder with a mass percentage of 0.1% relative to the lead powder, and titanium dioxide with a mass percentage of 0.1% relative to the lead powder into the ball mill, and start grinding for 3 to 5 hours to make the above raw materials Mix evenly to form a solid formula mixture; wherein, the particle size D50 of spherical activated carbon is 0.5-2 μm, the number of graphene layers does not exceed 10 layers, the sheet diameter D50 is 5-15 μm, and the particle size D50 of calcium sulfate is 0.8-1.5 μm, the particle size D50 of titanium dioxide is 0.8-1.5 μm;

[0022] S2. After the above-mentioned solid formula mixture is transferred t...

Embodiment 2

[0026] The preparation method of this example is consistent with Example 1, only the mass percentage of the formula slurry relative to the lead powder is inconsistent, that is: spherical activated carbon 1.2%, conductive carbon fiber 0.15%, graphene 0.3%, sodium silicate 1.0%, sulfuric acid Calcium 1.5%, Norwegian lignin 0.3%, first-grade natural rosin powder 0.1%, titanium dioxide 0.15%, pure water 10%.

Embodiment 3

[0028] The preparation method of this example is consistent with Example 1, only the mass percentage of the formula slurry relative to the lead powder is inconsistent, that is: 2.0% spherical activated carbon, 0.2% conductive carbon fiber, 0.1% graphene, 2.0% sodium silicate, sulfuric acid Calcium 1.0%, Norwegian lignin 0.2%, first-grade natural rosin powder 0.2%, titanium dioxide 0.2%, pure water 12%.

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Abstract

The invention discloses a lead-carbon battery negative electrode active material formula slurry as well as a preparation method and application thereof. A negative electrode active material comprises lead powder and a formula slurry, wherein the formula slurry comprises the following components in percentage by mass relative to the lead powder: 1.2-2.0 percent of spherical activated carbon, 0.1-0.2 percent of conductive carbon fibers, 0.1-0.3 percent of graphene, 1.0-2.0 percent of sodium silicate, 1.0-1.5 percent of calcium sulfate, 0.2-0.3 percent of lignin, 0.1-0.2 percent of colophony powder, 0.1-0.2 percent of titanium dioxide and 10.0-12.0 percent of water. A storage battery prepared by the invention has the advantages of good consistency, good low-temperature performance and high sealing reaction efficiency, and meanwhile, sulfation of the negative electrode active material can be effectively inhibited.

Description

technical field [0001] The invention relates to the technical field of lead-carbon batteries, in particular, to a formulation slurry for negative electrode active materials of lead-carbon batteries and a preparation method and application thereof. Background technique [0002] In daily life, the use of batteries is very common, especially lead-carbon batteries, which have large capacity and low cost, and have been widely used in electric vehicles; the performance of lead-carbon batteries directly affects the overall performance of electric vehicles. [0003] At present, in the production and use of lead-carbon batteries, various manufacturers have found that the main problem of lead-carbon batteries is that the electrical performance consistency is poor under low temperature conditions, that is, the low-temperature performance of batteries of the same batch or different batches is different. After further testing, it was found that one of the main factors for the poor consis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/38H01M4/48H01M4/58H01M4/583H01M4/60H01M4/62H01M10/06
CPCH01M4/364H01M4/38H01M4/5825H01M4/583H01M4/48H01M4/625H01M4/60H01M10/06H01M2004/027Y02E60/10
Inventor 杨海涛沈煜婷李博洋
Owner 江苏海宝电池科技有限公司
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