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Positive electrode lead paste formula of lead-acid storage battery with long service life and preparation method of positive electrode lead paste formula

A lead-acid battery, positive lead paste technology, applied in lead-acid batteries, battery electrodes, circuits, etc., can solve the problems of active material shedding and poor binding force of active materials, and achieve the effect of enhancing binding force and improving cycle life.

Pending Publication Date: 2022-03-25
ANHUI LEOCH BATTERY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] During the charging and discharging process of the positive electrode of the lead-acid battery, due to the mutual transformation between lead sulfate and lead dioxide, the structure of the porous electrode changes. Large changes, the shrinkage and expansion of the volume of the positive active material during charge and discharge, resulting in a very poor binding force between the active material and between the active material and the grid, resulting in softening and falling off of the active material

Method used

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  • Positive electrode lead paste formula of lead-acid storage battery with long service life and preparation method of positive electrode lead paste formula
  • Positive electrode lead paste formula of lead-acid storage battery with long service life and preparation method of positive electrode lead paste formula
  • Positive electrode lead paste formula of lead-acid storage battery with long service life and preparation method of positive electrode lead paste formula

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Embodiment 1

[0020] A positive lead paste formula for a long-life lead-acid battery, characterized in that: according to the weight percentage of the components: lead powder 80%-85%, sulfuric acid 5%-10%, pure water 5%-10%, graphite 0.05% -0.2%, short fiber 0.05%-0.15%, bismuth sulfate 0.05%-2%, sodium perborate 0.05%-2%, the total weight percentage of each component is 100%.

[0021] The density of the sulfuric acid is 1.4g / cm 3 .

[0022] A preparation method for the positive electrode paste formula of long-life lead-acid storage battery, comprising the following steps:

[0023] S1. After adding 800kg of lead powder into the paste mixer, add 0.5kg of graphite, 0.5kg of short fiber, 0.5kg of bismuth sulfate and 0.5kg of sodium perborate configured in the above ratio, and perform dry stirring for 4 to 5 minutes;

[0024] S2. Add 50kg of pure water and add it into the paste mixer for wet stirring within 2 minutes, stirring for 4-6 minutes;

[0025] S3. After wet stirring, add 50 kg of su...

Embodiment 2

[0030] A positive lead paste formula for a long-life lead-acid battery, characterized in that: according to the weight percentage of the components: lead powder 80%-85%, sulfuric acid 5%-10%, pure water 5%-10%, graphite 0.05% -0.2%, short fiber 0.05%-0.15%, bismuth sulfate 0.05%-2%, sodium perborate 0.05%-2%, the total weight percentage of each component is 100%.

[0031] The density of the sulfuric acid is 1.4g / cm 3 .

[0032] A preparation method for the positive electrode paste formula of long-life lead-acid storage battery, comprising the following steps:

[0033] S1. After adding 850kg of lead powder into the paste mixer, add 2kg of graphite, 1.5kg of short fiber, 2kg of bismuth sulfate and 2kg of sodium perborate configured in the above ratio, and perform dry stirring for 4-5 minutes;

[0034] S2. Add 100kg of pure water into the paste mixer for wet stirring within 2 minutes, and stir for 4 to 6 minutes;

[0035] S3. After wet stirring, add 100kg of sulfuric acid into...

Embodiment 3

[0040] A positive lead paste formula for a long-life lead-acid battery, characterized in that: according to the weight percentage of the components: lead powder 80%-85%, sulfuric acid 5%-10%, pure water 5%-10%, graphite 0.05% -0.2%, short fiber 0.05%-0.15%, bismuth sulfate 0.05%-2%, sodium perborate 0.05%-2%, the total weight percentage of each component is 100%.

[0041] The density of the sulfuric acid is 1.4g / cm 3 .

[0042] A preparation method for the positive electrode paste formula of long-life lead-acid storage battery, comprising the following steps:

[0043] S1. After adding 825kg of lead powder into the paste mixer, add 1.25kg of graphite, 1kg of short fiber, 1.25kg of bismuth sulfate and 1.25kg of sodium perborate configured in the above ratio, and perform dry stirring for 4 to 5 minutes;

[0044] S2. Add 75kg of pure water and add it to the paste mixer for wet stirring within 2 minutes, and stir for 4-6 minutes;

[0045] S3. After wet stirring, add 75kg of sulf...

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Abstract

The invention provides a positive lead paste formula of a long-life lead-acid storage battery, which comprises the following components in percentage by weight: 80 to 85 percent of lead powder, 5 to 10 percent of sulfuric acid, 5 to 10 percent of pure water, 0.05 to 0.2 percent of graphite, 0.05 to 0.15 percent of short fiber, 0.05 to 2 percent of bismuth sulfate and 0.05 to 2 percent of sodium perborate, and the sum of the weight percentages of the components is 100 percent. The lead paste has the advantages that the sodium perborate and the bismuth sulfate are added into the lead paste formula to improve the binding force between active substances and between the active substances and a grid, so that the cycle life of the battery is prolonged; bismuth sulfate plays a role of an adhesive in the lead paste; in the discharging process of the battery, one part of lead dioxide in the PAM is reduced, so that the binding force among other lead dioxide particles in the part is weakened; under the action of surface tension, some particles begin to recombine, and in the process, bismuth sulfate begin to act, so that the binding force between active substances and the binding force between the active substances and the grid are enhanced.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a positive electrode paste formula for long-life lead-acid batteries and a preparation method thereof. Background technique [0002] During the charging and discharging process of the positive electrode of the lead-acid battery, due to the mutual transformation between lead sulfate and lead dioxide, the structure of the porous electrode changes. Large changes, the shrinkage and expansion of the volume of the positive active material during charge and discharge, resulting in a very poor binding force between the active material and between the active material and the grid, resulting in softening and falling off of the active material. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention provides a positive electrode paste formula for a long-life lead-acid storage battery and a preparation method thereof. [0004] The present ...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/38H01M4/58H01M10/06
CPCH01M4/621H01M4/628H01M4/57H01M10/06Y02E60/10
Inventor 崔辉程先清朱继昌李振华李志兵陈清元
Owner ANHUI LEOCH BATTERY TECH
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