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Lead-acid storage battery electrolyte additive and preparation method thereof

An electrolyte additive and lead-acid battery technology, which is applied in lead-acid batteries, acid electrolytes, secondary batteries, etc., can solve the problems of poor cycle life improvement and achieve the effect of reducing sulfation

Active Publication Date: 2014-09-24
ANHUI YONGHENG STORAGE BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a method for reducing the sulfation of lead-acid battery plates, improving the electrochemical performance of the battery, and increasing the cycle life of the battery in order to solve the disadvantages of the existing lead-acid battery electrolyte additives that improve the cycle life. Electrolyte additives for lead-acid batteries

Method used

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  • Lead-acid storage battery electrolyte additive and preparation method thereof
  • Lead-acid storage battery electrolyte additive and preparation method thereof

Examples

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Embodiment 1

[0026] A preparation method of an electrolyte additive for a lead-acid battery, adding pure water to concentrated sulfuric acid to adjust the density to 1.03g / cm 3 , to prepare dilute sulfuric acid, take 1L of dilute sulfuric acid and heat it to 40°C, add s-triazine, sodium sulfate, and stannous sulfate, then add disodium edetate while stirring, vibrate ultrasonically for 40 minutes, and cool to room temperature. Among them, each liter of lead-acid battery electrolyte contains 1500mg / L of s-triazine, 1000mg / L of sodium sulfate, 1500mg / L of stannous sulfate, 3000mg / L of disodium edetate, and the balance is sulfuric acid solution; The frequency is 45Hz.

Embodiment 2

[0028] A preparation method of an electrolyte additive for a lead-acid storage battery, adding pure water to concentrated sulfuric acid to adjust the density to 1.26g / cm 3 , to prepare dilute sulfuric acid, take 1L of dilute sulfuric acid and heat it to 42°C, add s-triazine, sodium sulfate, stannous sulfate, then add disodium edetate while stirring, vibrate ultrasonically for 42min, and cool to room temperature. Among them, each liter of lead-acid battery electrolyte contains 1800mg / L of s-triazine, 1100mg / L of sodium sulfate, 1800mg / L of stannous sulfate, 4000mg / L of disodium edetate, and the balance is sulfuric acid solution; The frequency is 50Hz.

Embodiment 3

[0030] A preparation method of an electrolyte additive for a lead-acid storage battery, adding pure water to concentrated sulfuric acid to adjust the density to 1.3g / cm 3 , to prepare dilute sulfuric acid, take 1L of dilute sulfuric acid and heat to 45°C, add s-triazine, potassium sulfate, stannous sulfate, then add disodium ethylenediaminetetraacetate while stirring, vibrate ultrasonically for 45min, and cool to room temperature. Among them, each liter of lead-acid battery electrolyte contains 2000mg / L of s-triazine, 1200mg / L of potassium sulfate, 2000mg / L of stannous sulfate, 6000mg / L of disodium edetate, and the balance is sulfuric acid solution; The frequency is 55Hz.

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Abstract

The invention relates to a lead-acid storage battery electrolyte additive which contains s-triazine, sulfate, stannous mono-sulphate and ethylenediamine tetraacetic acid disodium, wherein each liter of lead-acid storage battery electrolyte contains 1,500-2,000mg / L of s-triazine, 1,000-1,200mg / L of sulfate, 1,500-2,000mg / L of stannous mono-sulphate, 3,000-6,000mg / L of ethylenediamine tetraacetic acid disodium and the balance of a sulfuric acid solution. The s-triazine and sulfuric acid are mixed according to a certain ratio to form a sulfuric acid electrolyte additive; due to the ligand mixing working mechanism of the s-triazine, the sulfation of a lead-acid storage battery polar plate is reduced, the electrochemical performance of a battery is improved, and the cycle service life of the battery is prolonged.

Description

technical field [0001] The invention relates to a lead-acid storage battery electrolyte, in particular to a lead-acid storage battery electrolyte additive for reducing sulfation of a lead-acid storage battery plate, improving the electrochemical performance of the battery and increasing the cycle life of the battery and a preparation method thereof. Background technique [0002] Since the advent of lead-acid batteries in 1859, people have been exploring the addition of certain solid or liquid additives to the electrolyte to increase battery capacity and extend battery life. Although the effectiveness of these additives is not certain, efforts have been made to find electrolyte additives to improve battery performance. [0003] Lead-acid batteries have been widely used in various fields, especially in the field of telecommunications, backup power supply, energy storage power supply and power applications, etc. However, traditional lead-acid batteries also have a series of p...

Claims

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Application Information

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IPC IPC(8): H01M10/08
CPCY02E60/126H01M10/08H01M10/4235H01M2300/0011Y02E60/10
Inventor 张绍辉
Owner ANHUI YONGHENG STORAGE BATTERY
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