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Cloud gel electrolyte for lead-acid storage battery

A lead-acid battery and electrolyte technology, applied in the direction of lead-acid batteries, etc., can solve the problems of poor acid-fixing ability, unstable gel strength, low stability, etc., achieve strong adsorption capacity, outstanding acid-fixing ability, and stable performance Effect

Active Publication Date: 2012-01-18
JIANGSU HUAFU STORAGE NEW TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to better overcome the current shortcomings of low electrolyte stability, poor acid-fixing ability, and unstable gel strength, and comprehensively improve battery performance, it is imperative to develop an electrolyte that is more suitable for maintenance-free lead-acid batteries.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0010] Change the molecular formula to SiO x (x=1.6), density 5~50g / l, specific surface area 200~1000m 2 6g of cloud glue powder per gram is evenly dispersed in 100g deionized water to form a cloud glue dispersion.

[0011] Dissolve 1.5 g of polyvinyl alcohol with a degree of polymerization of 500 and a degree of alcoholysis of 80% and 3 g of polyethylene glycol ether with a molecular weight of 2000 in 50 g of deionized water to prepare an aqueous additive solution.

[0012] 700g sulfuric acid was dissolved in 1140g deionized water to obtain dilute sulfuric acid solution.

[0013] Finally, mix the cloud glue dispersion, additive aqueous solution and dilute sulfuric acid solution evenly to obtain 2000g cloud glue electrolyte for lead-acid batteries. This electrolyte is suitable for lead-acid batteries using AGM separators and can be added to the batteries with a vacuum liquid filling machine.

example 2

[0015] Change the molecular formula to SiO x (x=1.8), density 5~50g / l, specific surface area 200~1000m 2 50g of cloud glue powder per gram is evenly dispersed in 400g deionized water to form a cloud glue dispersion.

[0016] Dissolve 2.0 g of polyvinyl alcohol with a degree of polymerization of 1700 and a degree of alcoholysis of 78% and 4 g of polyethylene glycol ether with a molecular weight of 1000 in 60 g of deionized water to prepare an aqueous additive solution.

[0017] 720 g of sulfuric acid was dissolved in 764 g of deionized water to obtain a dilute sulfuric acid solution.

[0018] Finally, mix the cloud glue dispersion, additive aqueous solution and dilute sulfuric acid solution evenly to obtain 2000g cloud glue electrolyte for lead-acid batteries. This electrolyte is suitable for all-colloid lead-acid batteries using PE and PVC separators, and a vacuum liquid filling machine can be used. Add to battery.

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Abstract

A cloud gel electrolyte for lead-acid storage batteries relates to the field of production technology of a cloud gel electrolyte used for lead-acid storage batteries. The electrolyte is prepared by mixing mainly sulfuric acid, cloud gel powder, an activated assistant, an additive, and deionized water. The electrolyte has good homogeneity, does not hydrate or become stratified, is convenient for filling operations, and is widely applicable to lead-acid storage batteries with various specification models by adjusting component ratios in the electrolyte. Storage batteries filled with the cloud gel electrolyte has a large initial capacity, strong charge acceptance, excellent low-temperature resistance, good starting performance, stable discharge performance, and long cycle life.

Description

technical field [0001] The invention belongs to the field of chemical power sources, and relates to the technical field of production of a cloud glue electrolyte that can be used for lead-acid batteries. Background technique [0002] Since the advent of lead-acid batteries, they have always had a great advantage in the field of chemical power sources, and how to improve the overall performance of lead-acid batteries has always been a research hotspot. As far as the development of the electrolyte used in lead-acid batteries is concerned, it has also gone through different stages. From the initial ordinary dilute sulfuric acid electrolyte, to sodium silicate electrolyte, to silica sol electrolyte, and finally to the gas phase SiO commonly used at present 2 colloidal electrolyte as the matrix. Its main research direction is mainly to make the electrolyte more stable and safe, reduce the concentration polarization of the battery, have stronger water retention capacity, and be ...

Claims

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Application Information

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IPC IPC(8): H01M10/08
CPCY02E60/126Y02E60/10
Inventor 吴战宇顾立贞朱明海周寿斌于尊奎代云飞居丽
Owner JIANGSU HUAFU STORAGE NEW TECH DEV
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