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Deep-cycle-resistant lead-acid storage battery anode lead paste formula and preparation process thereof

A technology of lead-acid batteries and positive electrode paste, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of easy deterioration of lead paste, softening and failure of lead paste, etc., and achieve the effect of improving the cycle life

Active Publication Date: 2015-02-25
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a deep-cycle-resistant lead-acid battery positive paste formula that improves the cycle life of the battery in order to solve the defect that the existing lead-acid battery positive paste is easy to deteriorate and lead to extreme softening and failure of the lead paste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of preparation technology of anti-deep cycle lead-acid storage battery anode lead paste, described preparation technology comprises the following steps:

[0026] a) Add lead powder, short fiber, colloidal graphite and tetrabasic lead sulfate into the paste machine according to the formula, and dry mix for 6 minutes; (see Table 1 for formula)

[0027] b) Add silicon dioxide emulsion, polytetrafluoroethylene emulsion and deionized water of formula quantity while stirring in the pasting machine of step a), then continue to stir for 4min; Silicon dioxide emulsion, polytetrafluoroethylene emulsion and deionized water The ionized water is added within 1 min; the mass percentage concentration of the polytetrafluoroethylene emulsion is 15%, and the mass percentage concentration of the silicon dioxide emulsion is 10%;

[0028] c) Add the formula amount while stirring in the compound paste machine of step b), and the density is 1.4g / cm 3 sulfuric acid, the temperature was...

Embodiment 2

[0031] A kind of preparation technology of anti-deep cycle lead-acid storage battery anode lead paste, described preparation technology comprises the following steps:

[0032] a) Add lead powder, short fiber, colloidal graphite and tetrabasic lead sulfate into the paste mixing machine according to the formula, and dry mix for 7 minutes; (see Table 1 for formula)

[0033] b) Add silicon dioxide emulsion, polytetrafluoroethylene emulsion and deionized water of formula amount while stirring in the pasting machine of step a), then continue to stir for 5min; Silicon dioxide emulsion, polytetrafluoroethylene emulsion and deionized water The ionized water was added within 2 minutes; the mass percentage concentration of the polytetrafluoroethylene emulsion was 55%, and the mass percentage concentration of the silicon dioxide emulsion was 30%;

[0034] c) Add the formula amount while stirring in the compound paste machine of step b), and the density is 1.4g / cm 3 sulfuric acid, the tem...

Embodiment 3

[0037] A kind of preparation technology of anti-deep cycle lead-acid storage battery anode lead paste, described preparation technology comprises the following steps:

[0038] a) Add lead powder, short fiber, colloidal graphite and tetrabasic lead sulfate into the paste machine according to the formula, and dry mix for 8 minutes; (see Table 1 for formula)

[0039] b) Add silicon dioxide emulsion, polytetrafluoroethylene emulsion and deionized water of formula amount while stirring in the pasting machine of step a), then continue to stir for 8min; Silicon dioxide emulsion, polytetrafluoroethylene emulsion and deionized water The ionized water was added within 3 minutes; the mass percentage concentration of the polytetrafluoroethylene emulsion was 85%, and the mass percentage concentration of the silicon dioxide emulsion was 50%;

[0040] c) Add the formula amount while stirring in the compound paste machine of step b), and the density is 1.4g / cm 3 sulfuric acid, the temperatur...

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Abstract

The invention relates to a deep-cycle-resistant lead-acid storage battery anode lead paste formula which comprises the following components by the weight percentage: 70-90% of a lead powder, 3-15% of sulfuric acid, 3.9-10% of water, 0.05-2% of short fibers, 0.1-0.4% of colloidal graphite, 0.1-0.5% of tetra-basic lead sulfate, 0.1-1.5% of a silica emulsion, and 0.1-5% of a polytetrafluoroethylene emulsion, wherein the particle size of tetra-basic lead sulfate particles is 10-120 nm. A structure of active substances in charge and discharge processes is ensured by adding the polytetrafluoroethylene emulsion; through adding the silica emulsion in a lead paste, silica forms a network structure on the surface of the lead paste, so that lead paste crystals are protected, and the active substance softening and shedding caused by volume expansion and contraction in the charge and discharge processes are reduced; and through adding 4BS in the lead paste, 4BS plays a seed crystal role in the lead paste, and at the same time, with use of the processes of high temperature and paste, a large amount of 4BS crystals are promoted to exist in the lead paste, so as to increase the battery cycle service life.

Description

technical field [0001] The invention belongs to the technical field of lead-acid storage batteries, and relates to a positive lead paste of a lead-acid storage battery, in particular to a formula and a preparation process of a deep-cycle-resistant lead-acid storage battery positive paste for improving the cycle life of the battery. Background technique [0002] From the currently recognized reaction mechanism of lead-acid batteries, it can be known that lead sulfate is converted into lead dioxide during the charging process of the lead-acid battery positive electrode, and lead dioxide is converted into lead sulfate during the discharge process. During the charge and discharge process, the structure of the porous electrode changes, the reason is that the density and molar volume of the positive electrode active material lead dioxide and the product lead sulfate after discharge change, and the volume shrinkage and expansion of the positive electrode active material during the c...

Claims

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Application Information

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IPC IPC(8): H01M4/57H01M4/62
CPCH01M4/57H01M4/628Y02E60/10
Inventor 祝皎皎赵文超马洪涛张余霞贡全富
Owner CHAOWEI POWER CO LTD
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