Battery cathode diachylon formulation high in utilization rate of active substance and preparation method of battery cathode diachylon formulation

A battery negative electrode and utilization rate technology, applied to battery electrodes, circuits, electrical components, etc., can solve problems affecting the cycle life of negative electrode active materials, reduce the apparent density of negative electrode paste, increase the acid content of lead paste, etc., to improve the initial Capacitance and charge acceptance, reduced current density, and improved compatibility

Active Publication Date: 2017-02-22
CAMEL GRP HUAZHONG BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Change the apparent density of the SLI negative lead paste for traditional automobile starting from 4.2g / cm 2 Reduced to 4.0g / cm 2 Even lower, this measure can significantly improve the utilization rate of the active material of the negative electrode, but the significant reduction in the apparent density of the negative electrode lead paste will seriously affect the cycle life of the negative electrode active material, and the negative electrode lead paste can be reduced by increasing the acid content of the lead paste. Density, the significant decrease in apparent density will cause the hardness of the lead paste to be too large, and the grid will be seriously deformed when it is filled. At the same time, it has higher requirements for technology and equipment.

Method used

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  • Battery cathode diachylon formulation high in utilization rate of active substance and preparation method of battery cathode diachylon formulation
  • Battery cathode diachylon formulation high in utilization rate of active substance and preparation method of battery cathode diachylon formulation
  • Battery cathode diachylon formulation high in utilization rate of active substance and preparation method of battery cathode diachylon formulation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Mechanically premix lignin Vanisperse AT 0.25Kg, nano-hollow barium sulfate 0.92Kg, and acetylene black 0.225Kg. After the premixing is uniform, the whole is dispersed in 100Kg of lead powder for dry mixing and mixing. The dry mixing time is controlled at 10 ~ Within 15 minutes;

[0029] Within a certain range, prolonging the stirring time is beneficial to improve the dispersion of Vanisperse AT, nano hollow barium sulfate, and acetylene black in the lead powder, so that the additives can be evenly dispersed in the lead powder, but if the stirring time is too long, it will easily lead to low production efficiency.

[0030] 2) Mix 0.125Kg of potassium polyaniline sulfonate PAN-K in 7Kg of deionized water in advance to prepare a suspension, then quickly add it and 3Kg of emulsion carbon nanotubes into the above-mentioned mixed lead powder for wet stirring, and the wet stirring time Control within 3 to 5 minutes;

[0031] 3) Slowly add 10.2Kg sulfuric acid aqueous solu...

Embodiment 2

[0034] 1) Mechanically premix lignin Vanisperse AT 0.25Kg, nano-hollow barium sulfate 0.98Kg, and acetylene black 0.21Kg. After the premixing is uniform, the whole is dispersed in 100Kg of lead powder for dry mixing and mixing. The dry mixing time is controlled at 10 ~ Within 15 minutes;

[0035] 2) 0.145Kg of potassium polyaniline sulfonate PAN-K was fully stirred in 6.82Kg of deionized water in advance to prepare a suspension, and then quickly added to the above-mentioned mixed lead powder together with 3.2Kg of emulsion carbon nanotubes for wet stirring. Stirring time is controlled within 3 to 5 minutes;

[0036] 3) Slowly add 9.9Kg sulfuric acid aqueous solution with a density of 1.38g / mL to the uniformly wet-stirred lead paste, and continue to stir within 18-20 minutes. During the entire negative electrode paste mixing process, the paste temperature must be strictly controlled at Between 45°C and 55°C, use 0.35Kg deionized water to fine-tune the apparent density of the l...

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Abstract

The invention relates to a battery cathode diachylon formulation high in utilization rate of active substance and a preparation method of the battery cathode diachylon formulation and belongs to the technical field of lead-acid storage batteries. The the battery cathode diachylon formulation comprises dilute sulfuric acid of 1.38g/ml in density, deionized water, lignin Vanisperse AT, polyaniline potassium sulfonate PAN-K, nano hollow barium sulfate, acetylene black, emulsion carbon naotube Sus-CNT and lead powder. On the basis of a conventional cathode diachylon formulation, water-soluble PAN-K is adopted to completely replace conventional polyester staple fiber, nano hollow barium sulfate is adopted to completely replace conventional precipitated barium sulfate, and the emulsion carbon nanotube Sus-CNT is adopted to partly replace deionized water for paste mixing. On the premise that circulating life of a cathode produced by the formulation is not shortened, active substance utilization rate and charging receiving capability of the cathode are remarkably improved, and the battery cathode diachylon formulation is about to have great application and popularization prospect in the field of lowering weight of active substance of the cathode and lowering manufacturing cost of the lead-acid storage batteries.

Description

technical field [0001] The invention belongs to the technical field of lead-acid storage batteries, and in particular relates to a negative electrode paste formula and a preparation method thereof for batteries with high active material utilization rate. Background technique [0002] With the competitive landscape stimulated by the lead-acid battery industry, major battery manufacturers continue to improve production processes and technologies, and optimize and improve the manufacturing cost and material cost of lead-acid batteries. Key technology research trends for all battery manufacturers. At present, the active material utilization rate of the negative electrode of the traditional SLI lead-acid battery used for starting the car is 55%-65% at the 20h rate. On the premise that the cycle life of the battery is not significantly reduced and the battery structure is not changed, the active material utilization rate of the negative electrode at the 20h rate is 55%-65%. It is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/57H01M4/62
CPCH01M4/57H01M4/62H01M4/622H01M4/625H01M4/628Y02E60/10
Inventor 刘长来张兴张祖波夏诗忠
Owner CAMEL GRP HUAZHONG BATTERY
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