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Composite additive for negative electrode of lead-acid storage battery and its preparation and use method

A composite additive, lead-acid battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of insufficient battery charge acceptance and low-temperature discharge performance, huge impact on battery performance, and many types of negative electrode additives. , to achieve the effect of improving charging acceptance and low-temperature discharge performance, easy to use, and avoiding production and operation errors

Inactive Publication Date: 2011-12-28
SHANDONG JINKELI POWER SOURCES TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

However, organic additives will inhibit the formation of tetrabasic lead sulfate crystal nuclei, so the lead paste structure is mainly tribasic lead sulfate crystals, and the charge acceptance and low-temperature discharge performance of the battery cannot be fully utilized.
[0005] Although the input amount of lead-acid battery negative electrode additive is only a few percent, it has a huge impact on battery performance and is indispensable in the battery manufacturing industry.
In actual production, all kinds of single components are manually weighed and fed separately on site, and the prepared additives will not be directly put into production. Due to the variety of negative electrode additives and the different dosages, it is easy to add less or more. Even forgetting to add errors, which reduces production efficiency to a certain extent

Method used

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  • Composite additive for negative electrode of lead-acid storage battery and its preparation and use method

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Embodiment 1

[0017] Mix raw materials according to mass percentage: 5% oak extract, 5% sodium lignosulfonate, 15% humic acid, 10% carbon black, 30% barium sulfate, tetrabasic lead sulfate with a median particle size of 3.5 μm 35%. Put the mixed material into the ball mill at a speed of 60r / min, mix for 3 hours, and pack the material.

Embodiment 2

[0019] Mix raw materials according to mass percentage: 10% oak extract, 8% sodium lignosulfonate, 15% humic acid, 10% carbon black, 25% barium sulfate, tetrabasic lead sulfate with a median particle size of 1.5 μm 32%. Put the mixed material into the ball mill at a speed of 60r / min, mix for 2 hours, and pack the material.

Embodiment 3

[0021] Mix the raw materials according to mass percentage: 15% of oak extract, 8% of sodium lignosulfonate, 15% of humic acid, 5% of carbon black, 20% of barium sulfate, tetrabasic lead sulfate with a median particle size of 1.0 μm 37%. Put the mixed material into the ball mill at a speed of 60r / min, mix for 4 hours, and pack the material.

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Abstract

The invention relates to a lead-acid battery negative electrode additive, in particular to a lead-acid battery negative electrode composite additive and its preparation and use method, which is prepared from the following raw materials in terms of mass percentage: 5% to 15% of rubber bowl extract, wood Sodium Sulfonate 4-8%, Humic Acid 5-15%, Carbon Black 5-10%, Barium Sulfate 20-30%, and Tetrabasic Lead Sulfate 30-40%. Mix all components into a ball mill during preparation Medium grinding for 2 to 4 hours, and put into use according to 2 to 3% of the weight of lead powder when used. The advantages of the invention are: (1) the tetrabasic lead sulfate is used as the negative electrode paste additive, thereby comprehensively improving the performance of the negative electrode lead paste of the lead-acid battery, improving the charging acceptance capacity and low-temperature discharge performance of the battery, and prolonging the service life; (2) Various additives are optimized and compounded to form a "one package" composite additive, which is easy to use and avoids production operation errors.

Description

technical field [0001] The invention relates to a lead-acid battery negative electrode additive, in particular to a lead-acid battery negative electrode composite additive and its preparation and use methods. Background technique [0002] Additives are an important component of lead-acid batteries and have an important impact on the performance of batteries. Additives added to lead-acid batteries are generally divided into: plate additives and electrolyte additives. Plate additives are added when mixing the paste. For the negative plate, the main function is to resist shrinkage, also known as expansion agent; for the positive plate, it mainly increases the strength of the plate, prevents softening, falling off, and increases conductivity. The electrolyte additive is added when the electrolyte is prepared, and its main function is to increase the charge and discharge performance of the battery and slow down grid corrosion. [0003] In lead-acid batteries, the composition of ...

Claims

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Application Information

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IPC IPC(8): H01M4/62
CPCY02E60/12Y02E60/10
Inventor 邢延超邢福成曹贵发李雪松苏守前
Owner SHANDONG JINKELI POWER SOURCES TECH
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