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Lead paste for battery positive plate and preparation method of lead paste and positive plate

A battery positive electrode and lead paste technology, which is applied to battery electrodes, lead-acid battery electrodes, lead-acid batteries, etc., can solve the problems of lead paste divergence, etc., and achieve the effects of improving crystal size, delaying softening and falling off, and improving consistency

Inactive Publication Date: 2021-07-09
浙江埃登达新能源材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lead paste of the present invention solves the problem of divergence of the lead paste after adding tetrabasic lead sulfate alone, and the problem of stickiness of the lead paste by adding modified silicon powder alone. Adding and using it at the same time forms small and uniform crystals with regular size, which is beneficial to lifting and Process performance of paste and plate coating

Method used

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  • Lead paste for battery positive plate and preparation method of lead paste and positive plate
  • Lead paste for battery positive plate and preparation method of lead paste and positive plate
  • Lead paste for battery positive plate and preparation method of lead paste and positive plate

Examples

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Embodiment 1

[0041] A kind of lead paste for battery positive plate, it comprises following raw material components: 75kg of lead powder; 3kg of red lead powder; 0.75kg of the mixture of tetrabasic lead sulfate and metal oxide; 3 Dilute sulfuric acid 7.5kg; pure water 9kg and modified silicon 1.5kg.

[0042] A preparation method of lead paste for battery positive plate, comprising the following steps:

[0043] (1) tetrabasic lead sulfate and metal oxide that gross mass is 7kg join in reactor;

[0044] (2) Continuously feed nitrogen into the reactor, stir the tetrabasic lead sulfate and the metal oxide in the reactor while heating the reactor, and heat the temperature to 400-600° C.;

[0045] (3) After stirring for 10-15 minutes, the temperature of the reactor is further raised to 600-800°C, and the stirring is continued, and kept for 30-45 minutes;

[0046] (4) After the reaction is complete, the mixture is released in a molten state, cooled, crushed, and finally ground;

[0047] (5) Ad...

Embodiment 2

[0060] A kind of lead plaster for positive electrode plate of battery, it comprises the following raw material components by weight: 75kg of lead powder; 3kg of red lead powder; 1.5kg of the mixture of tetrabasic lead sulfate and metal oxide; 3 Dilute sulfuric acid 7.5kg; pure water 9kg and modified silicon 1.5kg.

[0061] The preparation method of the lead paste for the positive plate of the battery and the positive plate of the power battery is the same as that in Example 1.

Embodiment 3

[0063] A kind of lead plaster for battery positive plate, it comprises the following raw material components by weight: 75kg of lead powder; 3kg of red lead powder; 0.75kg of the mixture of tetrabasic lead sulfate and metal oxide; 3 Dilute sulfuric acid 7.5kg; pure water 9kg and modified silicon 3kg.

[0064] The preparation method of the lead paste for the positive plate of the battery and the positive plate of the power battery is the same as that in Example 1.

[0065] In the above-mentioned embodiments 1-3, the metal oxide is selected from Pb 2 Sb 2 o 7 , PbSb 2 o 6 , Pb 3 Sb 2 o 6 Any one or combination of them.

[0066] The modified silicon is selected from any one or a combination of two or more of fumed silica, precipitated silica and quartz powder.

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Abstract

The invention provides lead paste for a battery positive plate and a preparation method of the lead paste and the positive plate. The lead paste for the battery positive plate comprises the following raw material components: lead powder, red lead powder, a mixture of tetrabasic lead sulfate and metal oxide, sulfuric acid, water and modified silicon; the modified silicon powder is added while the mixture of the tetrabasic lead sulfate and the metal oxide is added into the formula of the lead plaster, so that the growth of tetrabasic lead sulfate crystals is promoted; the crystal size of the crystals is further influenced by the addition of the modified silicon powder, the crystal size is finer and more uniform, the cohesiveness between the lead plaster is better, the adhesion force and coating capacity are better, and the problem that the lead paste is dispersed after tetrabasic lead sulfate is independently added and the problem that the lead paste is sticky after modified silicon powder is independently added are solved; and through simultaneous adding and use, crystals which are regular, fine and uniform in size are formed, and the paste mixing and plate coating technological performance is improved.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a lead paste for battery positive plates and a preparation method of the lead paste and positive plates. Background technique [0002] In recent years, due to the advantages of low price, simple preparation process, high stability, safety and reliability, lead-acid batteries have played an irreplaceable role in the fields of motor vehicle starting, general lighting and aerospace. However, with the deepening of research, it was found that ordinary lead-acid batteries will be deactivated after being used more than 600 times, and nearly 70% of the deactivated lead-acid batteries are due to the deactivation of the positive grid. It is caused by the shedding of the lead paste and the bubbling and pulverization of the lead paste. [0003] A Chinese invention patent with application number CN202010383639.8 discloses a battery plate lead paste containing modified silicon pow...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M4/14H01M4/20H01M4/21H01M10/06
CPCH01M4/14H01M4/20H01M4/21H01M4/62H01M4/628H01M10/06Y02E60/10
Inventor 朱健潘东
Owner 浙江埃登达新能源材料有限公司
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