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Method for preparing high-purity lead-acid barium conductive material for lead-acid storage battery

A lead-acid battery, conductive material technology, applied in high lead-acid/lead-acid, battery electrodes, circuits, etc., can solve the problems of high loss rate, poor stability, etc., to reduce internal resistance, improve purity, and reduce impurities The effect of content

Inactive Publication Date: 2011-07-27
JIANGSU HUAFU STORAGE NEW TECH DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used conductive additives are carbon materials such as graphite and acetylene black, which have the disadvantages of poor stability and high loss rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

1 example 1

[0014] 1. Accurately weigh 234.2g (1.05mol) of lead monoxide with a purity above chemical purity and 153.3g (1.00mol) of barium oxide with a purity above chemical purity and mix evenly.

[0015] 2. Prepare 1720 g of 15 wt % acetic acid solution (4.3 mol of acetic acid) and 1950 g of 12 wt % oxalic acid solution (2.6 mol of oxalic acid).

[0016] First, add lead monoxide and barium lead acid with a good ratio into the acetic acid solution, stir until clear and transparent, complete the salinization reaction, and produce lead acetate and barium acetate; secondly, slowly add the oxalic acid solution into the salinization reaction solution, and Stirring continuously, a co-precipitation reaction occurs, and a co-precipitate of lead oxalate and barium oxalate is obtained; finally, after separation, the co-precipitate is sintered at 800°C for 8 hours, and after the sintered product is cooled to room temperature, it is pulverized to obtain a purity of 98%. Black lead-acid barium powde...

2 example 2

[0018] 1. Accurately weigh 227.5g (1.02mol) of lead monoxide with a purity above chemical purity and 153.3g (1.00mol) of barium oxide with a purity above chemical purity and mix evenly.

[0019] 2. Prepare 1467g of 18wt% acetic acid solution (4.4mol acetic acid) and 1680g of 15wt% oxalic acid solution (2.8mol oxalic acid).

[0020] First, add lead monoxide and barium lead acid with a good ratio into the acetic acid solution, stir until clear and transparent, complete the salinization reaction, and produce lead acetate and barium acetate; secondly, slowly add the oxalic acid solution into the salinization reaction solution, and Constantly stirring, coprecipitation reaction takes place, obtains the coprecipitate of lead oxalate and barium oxalate; Finally, after coprecipitate is separated, in 850 o Sintering at C for 6 hours, after the sintered product is cooled to room temperature, pulverize to obtain a black barium lead acid powder product with a purity of 99%, which is a high...

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Abstract

The invention relates to a method for preparing a high-purity lead-acid barium conductive material for a lead-acid storage battery, in particular to a lead-acid barium conductive material applied to a lead-acid storage battery. Lead monoxide and barium oxide are used as main raw materials; and the material is prepared by the steps of proportioning, salinization, co-precipitation, drying, sintering, crushing and the like. The lead-acid barium material is a powdery material with good electric conductivity, and can be used as a conductive additive and applied in a storage battery polar plate. The internal resistance of the battery is reduced, the initial capacity of the battery is increased, and good charge receiving capacity is obtained.

Description

technical field [0001] The invention belongs to the field of chemical power source materials, and in particular relates to a production technology of lead-acid barium conductive material that can be used for lead-acid battery pole plates. Background technique [0002] The performance of the positive plate of a lead-acid battery is the main determinant of the overall performance of the battery. Adding an appropriate amount of conductive additives to the positive lead paste can reduce the internal resistance of the battery, increase the initial capacity of the battery, and make the battery have better charge acceptance. At present, the commonly used conductive additives are carbon materials such as graphite and acetylene black, which have the disadvantages of poor stability and high loss rate. Barium lead acid has the characteristics of good conductivity and high stability. It has important application value as a conductive additive in positive electrode paste, but the purity...

Claims

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Application Information

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IPC IPC(8): C01G21/22H01M4/62
CPCY02E60/12Y02E60/10
Inventor 吴战宇顾立贞张维龙张琳董志成周寿斌
Owner JIANGSU HUAFU STORAGE NEW TECH DEV
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