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Positive and negative electrode active substance formulation for valve controlled and sealed lead-acid accumulator

A positive active material, lead-acid battery technology, applied in the field of lead paste, can solve the problems of operator health hazards, accelerated corrosion of coating equipment, and high sulfuric acid density, saving time for paste and paste, improving utilization, and reducing corrosion. Effect

Inactive Publication Date: 2006-11-22
江苏隆源双登电源有限公司
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

The traditional lead paste is a mixture of lead powder, sulfuric acid, deionized water and additives, and the paste process must strictly control the temperature (not higher than 70 ° C), and the sulfuric acid used in the paste has a high density, which accelerates the corrosion of the coating equipment , the acid mist has caused environmental pollution and harm to the health of the operator

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: by following composition (weight percent, the same below): lead powder 80%, Na 2 o 2 5%, 5% polytetrafluoroethylene, 10% deionized water, and paste the positive electrode. First, mix and stir the lead powder and sodium peroxide powder for 3 minutes, then add the polytetrafluoroethylene emulsion and stir for 5 minutes, and then add the deionized water, fully stirred for 30 minutes, the positive plate can be coated; according to the following composition: lead powder 77%, Na 2 o 2 8%, expansion agent 5%, deionized water 10%, negative electrode and paste, first mix lead powder and sodium peroxide powder for 3 minutes, then add expansion agent and stir for 5 minutes, then add deionized water, fully stir for 30 minutes Minutes, the negative plate can be painted. The coated plate can be dried for 10-12 hours at room temperature or 4-6 hours in a drying room at 60°C without curing, and then it can enter the assembly and internalization process. The production...

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PUM

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Abstract

A positive and negative electrode active compound formulation for valve control type sealed lead-acid accumulator, wherein sodium dioxide is used to replace sulfuric acid, and right amount of PTEF isadded into the positive electrode formulation, plumping agent is added into the negative electrode formulation. The invention realizes low cost of manufacture, high production efficiency and improvedutilization ratio of active compound, the invention also reduces the equipment corrosion and environmental pollution, the battery made thereby can be used in the field of floating charge and circulation application. íí

Description

technical field [0001] The invention relates to a lead paste used as positive and negative active materials of sealed lead-acid batteries, belonging to the technical field of sealed lead-acid batteries. Background technique [0002] In the traditional lead-acid battery production process, the lead powder used is Barton powder or ball mill powder. The lead powder is not a powdery pure lead particle, but a dual-phase granular powder of metallic lead covered with a layer of lead oxide. The degree of oxidation is generally between 70% and 85%. The remaining 15% to 30% of the free lead in the lead powder will be further oxidized in the subsequent mixing and curing process until the free lead content drops below 5%. It is better not to exceed 1%. If the content of free lead in the cured pole plate is greater than 5%, it will cause difficulty in formation and affect the capacity of the pole plate. The curing process generally takes about 48 to 72 hours, and it needs to be carried...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/14H01M4/36
CPCY02E60/10
Inventor 闫智刚唐民洪祝士平管雄俊陈怀林
Owner 江苏隆源双登电源有限公司
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