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A kind of lead-acid storage battery electrolyte additive and preparation method thereof

An electrolyte additive, lead-acid battery technology, applied in the direction of lead-acid battery, lead-acid battery construction, electrolyte, etc., can solve the problems of discharge capacity reduction, lead-acid battery charge acceptance decline, etc.

Active Publication Date: 2021-06-15
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature of the working environment of the lead-acid battery changes greatly, and it is often necessary to work in a low temperature environment below 0°C. The low temperature environment will lead to a decrease in the charge acceptance of the lead-acid battery and a decrease in the discharge capacity

Method used

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  • A kind of lead-acid storage battery electrolyte additive and preparation method thereof
  • A kind of lead-acid storage battery electrolyte additive and preparation method thereof
  • A kind of lead-acid storage battery electrolyte additive and preparation method thereof

Examples

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Effect test

Embodiment 1

[0024] A preparation method of an electrolyte additive for a lead-acid battery, adding concentrated sulfuric acid to ultrapure water to prepare dilute sulfuric acid with a volume of 1L, and adjusting the density of the dilute sulfuric acid to 1.24g / cm 3 3,500 mg of sodium sulfate, 4,000 mg of sodium tripolyphosphate, 4,000 mg of sodium dimercaptosuccinate, 5,000 mg of aspartic acid, and 2,000 mg of methanesulfonic acid were sequentially added to dilute sulfuric acid. Adjust the temperature of the dilute sulfuric acid to 37° C., and stir at a speed of 300 rpm for 5 minutes.

Embodiment 2

[0026] A preparation method of an electrolyte additive for a lead-acid battery, adding concentrated sulfuric acid to ultrapure water to prepare dilute sulfuric acid with a volume of 1L, and adjusting the density of the dilute sulfuric acid to 1.24g / cm 3 3,000 mg of stannous sulfate, 3,500 mg of sodium tripolyphosphate, 3,500 mg of sodium dimercaptosuccinate, 4,000 mg of cysteine, and 2,000 mg of methanesulfonic acid were sequentially added to dilute sulfuric acid. Adjust the temperature of the dilute sulfuric acid to 35° C., and stir at a speed of 400 rpm for 5 minutes.

Embodiment 3

[0028] A preparation method of an electrolyte additive for a lead-acid battery, adding concentrated sulfuric acid to ultrapure water to prepare dilute sulfuric acid with a volume of 1L, and adjusting the density of the dilute sulfuric acid to 1.24g / cm 3 3,200 mg of cobalt sulfate, 3,800 mg of sodium tripolyphosphate, 3,200 mg of sodium dimercaptosuccinate, 5,000 mg of threonine, and 3,000 mg of methanesulfonic acid were sequentially added to dilute sulfuric acid. Adjust the temperature of the dilute sulfuric acid to 36° C., and stir at a speed of 320 rpm for 5 minutes.

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Abstract

The invention discloses a lead-acid storage battery electrolyte and a preparation method thereof, wherein each liter of the lead-acid storage battery electrolyte contains 3000-4000 mg / L of sulfate, 3000-4000 mg / L of sodium tripolyphosphate, and sodium dimercaptosuccinate 2000‑5000mg / L, α‑amino acid 4000‑8000mg / L, methanesulfonic acid 1000‑4000mg / L. The balance is sulfuric acid. Using the electrolyte solution provided by the invention can effectively reduce the sulfation of the lead-acid battery plate, and improve the discharge capacity and charge acceptance of the lead-acid battery in a low-temperature environment.

Description

Technical field: [0001] The invention relates to a lead-acid battery electrolyte, in particular to an electrolyte additive for improving the low-temperature performance of a lead-acid battery and a preparation method thereof. Background technique: [0002] Lead-acid battery has a history of nearly 150 years, is a very important secondary battery, and still occupies a large market share in the battery market today. Lead-acid batteries have a wide range of applications and are widely used in industries such as telecommunications, energy storage, automobiles, and backup power. The temperature of the working environment of the lead-acid battery varies greatly, and it is often necessary to work in a low temperature environment below 0°C. The low temperature environment will lead to a decrease in the charge acceptance capacity of the lead-acid battery and a decrease in the discharge capacity. [0003] Aiming at the problem of performance degradation of lead-acid batteries in low-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/08H01M10/12
CPCH01M10/08H01M10/12H01M2300/0091Y02E60/10Y02P70/50
Inventor 林海波高宏宇
Owner JILIN UNIV
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