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Anode lead paste with high utilization rate of active substances of lead-acid battery and preparation method thereof

A technology of lead-acid battery and positive electrode paste, which is applied in the field of positive electrode paste, which can solve the problems of difficulty in improving the utilization rate of positive active materials and performance limitations of lead-acid batteries, and achieve excellent low-temperature starting ability and improved service life.

Inactive Publication Date: 2010-12-22
中国船舶重工集团动力股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This conventional formula limits the performance of lead-acid batteries, and it is difficult to increase the utilization rate of positive electrode active materials. Therefore, in order to further improve the utilization rate of positive electrode lead paste active materials, it is necessary to optimize and improve the formula of positive electrode lead paste in combination with positive electrode active materials.

Method used

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  • Anode lead paste with high utilization rate of active substances of lead-acid battery and preparation method thereof
  • Anode lead paste with high utilization rate of active substances of lead-acid battery and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: the lead powder that 100kg PbO content is 63%~85% is added in the plaster mixing machine, add the graphite powder of 0.01kg, the sodium sulfate of 1.0kg and the polyester fiber of 0.03kg simultaneously, above-mentioned material is stirred, Then add 10kg of purified water, mix evenly in the wet state, and quickly drench the density to 1.4g / cm 3 (25°C) sulfuric acid solution 7kg, control the paste temperature between 50-80°C during the mixing process, keep it for 10-20min until the reaction is uniform, take cooling measures, the temperature drops below 45°C, and the paste can be used.

Embodiment 2

[0023] Embodiment 2: the lead powder that 100kg PbO content is 63%~85% is added in the plaster mixing machine, add the graphite powder of 1.01kg, the sodium sulfate of 0.5kg and the polyester fiber of 0.08kg simultaneously, above-mentioned material is stirred, Then add 13kg of purified water, mix evenly in the wet state, and quickly drench with a density of 1.4g / cm 3 (25°C) sulfuric acid solution 14kg, during the mixing process, control the paste temperature between 50-80°C, keep it for 10-20 minutes to react uniformly, take cooling measures, the temperature drops below 45°C, and the paste can be used.

Embodiment 3

[0024] Embodiment 3: the lead powder that 100kgPbO content is 63%~85% is added in the paste machine, add the graphite powder of 1.5kg, the sodium sulfate of 0.01kg and the polyester fiber of 0.12kg simultaneously, above-mentioned material is stirred, then Add 12kg of purified water, mix evenly in the wet state, and quickly drench with a density of 1.4g / cm 3 (25°C) sulfuric acid solution 12kg, control the paste temperature between 50-80°C during the mixing process, keep the reaction for 10-20min evenly, take cooling measures, the temperature drops below 45°C, and the paste can be used.

[0025] The fibers used in the above examples are polyester fibers with a length of 3 to 5 mm.

[0026] Apply the positive lead paste prepared by the above method on the grid, cure it at about 40°C and 50% to 98% RH for 24h to 48h, and then dry it at 70°C and 20%RH for 24h to 36h to produce a positive green plate. The negative raw plate can be manufactured by matching the negative lead paste of...

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Abstract

The invention discloses an anode lead paste with high utilization rate of active substances of a lead-acid battery and a preparation method thereof, and is used for improving the utilization rate of the active substances of the anode and the low-temperature starting ability of the lead-acid battery and prolonging the service life of the battery. The improved lead paste comprises the following components in unit by weight: 100 units of lead powder, 0.01 to 1.5 units of graphite powder, 0.01 to 1.0 unit of sodium sulfate, 0.03 to 0.12 unit of polyester fiber and 7 to 14 units of acid. A proper amount of graphite powder is added into the formula of the lead paste so as to improve the performance of the anode; a proper amount of sodium sulfate is added, and is dissolved and separated out during formation, so that the porosity of the active substances is improved and the reaction area is increased; meanwhile, the separated sodium sulfate enhances the conductivity of the electrolyte in the battery, and the deep discharge performance of the battery is improved. The test data indicates that: for the battery made from the anode lead paste, the main technical performance indexes can fully meet and exceed the related standard requirements and meet the requirements of various vehicles.

Description

technical field [0001] The invention relates to a positive electrode paste with high active material utilization rate of a lead-acid storage battery, which belongs to the technical field of storage batteries. Background technique [0002] With the rapid development of the battery industry, the demand and performance requirements for lead-acid batteries, especially for small-sized products, are getting higher and higher. With the research in recent years, the utilization rate of the active material of the positive lead paste of the lead-acid battery has made great progress. According to the existing technology, the utilization rate of the active material of the positive lead paste can reach 53%, but this still has a certain gap with the demand. There is still room for further improvement in the utilization rate of active substances. At present, the performance requirements of lead-acid battery products are reflected in: 1. Good rechargeability; 2. Excellent low-temperature a...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/14H01M4/16
CPCY02E60/126Y02E60/10
Inventor 王军安查立平
Owner 中国船舶重工集团动力股份有限公司
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