Active positive-electrode material for lead-acid battery and preparation method thereof

A positive active material, lead-acid battery technology, applied in the direction of lead-acid battery electrodes, battery electrodes, circuits, etc., can solve the problems that affect the voltage consistency of a group of batteries, endanger the health of production workers, and uneven plate quality. Achieve the effect of saving mixing paste time, shortening the cycle and simplifying the production process

Inactive Publication Date: 2008-03-05
江苏隆源双登电源有限公司
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AI Technical Summary

Problems solved by technology

[0002] In the traditional lead-acid battery production process, the lead pollution caused by the pure lead used and the active lead oxide powder made from it as electrode material not only destroys the environment, but also seriously endangers the health of production workers; due to the oxidation of lead powder The difference in degree will cause the uneven quality of the plate, which will affect the consistency of the battery voltage; curing is a very important and necessary step in the traditional lead-acid battery production process, and the power consumed by the traditional long curing process , manpower and equipment depreciation, etc., its production cost is very high

Method used

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Experimental program
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Embodiment Construction

[0019] The excess density is 1.28g / cm 3 Sulfuric acid is added to lead powder with an oxidation degree of 90% for reaction. The reaction is carried out under ventilated and cooled conditions. During the reaction, continuous stirring is required until the reactant completely turns off-white. It takes about 48 hours for the reaction to complete. The temperature is controlled at 50-70°C. After the reaction, wash the reaction product with distilled water until the pH of the cleaning solution is around 7, then filter, and dry the filtered product in an oven at 50±5°C for 24 hours, and finally grind the dried lead sulfate in a mortar 200 mesh sieves to produce lead sulfate powder.

[0020] Then, take lead sulfate powder 7.3kg and mix with graphite additive 0.3kg and polytetrafluoroethylene additive 0.2kg, stir for 3 minutes, then add polyacrylonitrile 0.006kg and stir for 5 minutes, the density is 1.05g / cm 3 After mixing 1.2kg of sulfuric acid and 0.994kg of deionized water, add i...

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Abstract

The formula of active positive-electrode material consists of: lead sulfate 68-75 wt%, sulfuric acid 10-15 wt5, deionized water 6-12 wt%, short fiber 0.04-0.8 wt%, inorganic conducting additive 2-4 wt% and organic additive 1-2.5 wt%. The preparation process of the active positive-electrode material includes reaction sulfuric acid and lead powder to obtain lead sulfate powder, mixing lead sulfate powder with other material to obtain mixture paste. Utilizing lead sulfate, rather than lead powder, as positive electrode material results in high porosity, high active matter utilization, plate homogeneity, no environmental pollution, simple production process and low production cost.

Description

technical field [0001] The invention relates to a component of a positive electrode active material for a lead-acid storage battery and a preparation method thereof, belonging to the technical field of the lead-acid storage battery. Background technique [0002] In the traditional lead-acid battery production process, the lead pollution caused by the pure lead used and the active lead oxide powder made from it as electrode material not only destroys the environment, but also seriously endangers the health of production workers; due to the oxidation of lead powder The difference in degree will cause the uneven quality of the plate, which will affect the consistency of the battery voltage; curing is a very important and necessary step in the traditional lead-acid battery production process, and the power consumed by the traditional long curing process , manpower and equipment depreciation, etc., its production cost is very high. Therefore, people are working hard to find new ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/62H01M4/16
CPCY02E60/126Y02E60/10
Inventor 闫智刚张绍辉唐民洪管雄俊
Owner 江苏隆源双登电源有限公司
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