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

A lead-acid battery and electrolyte technology, applied in the direction of lead-acid battery, lead-acid battery construction, electrolyte, etc., to achieve the effects of improving charge and discharge efficiency, improving cycle life, and increasing low-temperature performance

Active Publication Date: 2021-06-29
湖南省长城新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, how to improve the battery to improve the problem of premature end of life caused by the sulfation of the current plate and meet the high standard requirements of low temperature performance is a research topic facing the battery industry.

Method used

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

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Experimental program
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Effect test

Embodiment 1

[0032] Composition of raw materials (parts by weight): 1 part of cobalt sulfate, 1 part of chromium sulfate, 2 parts of ammonium dichromate, 1 part of sodium sulfate, 1 part of magnesium sulfate, 1 part of organic bismuth additive, 5 parts of tannin, 20 parts of phosphoric acid, manna 50 parts of alcohol, 100 parts of polyethylene glycol, and 200 parts of deionized water.

[0033] The organic bismuth additive is prepared by the following method: react 3mol 2-iodocyanobenzene and 1mol isopropylmagnesium chloride in 200mL dimethyl sulfoxide solution at -20°C to obtain the corresponding active intermediate, and then add 0.8 mol bismuth trichloride continues to react, and finally three-(2-cyanophenyl) bismuth is obtained, which is an organic bismuth additive.

[0034] The preparation method of lead-acid storage battery electrolyte, comprises the following steps:

[0035] S1. Weigh each raw material according to the formula;

[0036] S2. Heat 1 / 5 of deionized water to 50°C, add 1 / 2...

Embodiment 2

[0041] Composition of raw materials (parts by weight): 3 parts of cobalt sulfate, 2 parts of chromium sulfate, 4 parts of ammonium dichromate, 3 parts of sodium sulfate, 2 parts of magnesium sulfate, 3 parts of organic bismuth additive, 10 parts of tannin, 50 parts of phosphoric acid, manna 100 parts of alcohol, 300 parts of polyethylene glycol, and 400 parts of deionized water.

[0042] The organic bismuth additive is prepared by the following method: react 3.2mol 2-iodocyanobenzene and 3mol isopropylmagnesium chloride in 200mL dimethyl sulfoxide solution at -40°C to obtain the corresponding active intermediate, and then add 1mol bismuth trichloride continues to react, and finally three-(2-cyanophenyl) bismuth is obtained, which is an organic bismuth additive.

[0043] The preparation method of lead-acid storage battery electrolyte, comprises the following steps:

[0044] S1. Weigh each raw material according to the formula;

[0045] S2. Heat 1 / 5 of deionized water to 70°C,...

Embodiment 3

[0050] Composition of raw materials (parts by weight): 1.5 parts of cobalt sulfate, 1.2 parts of chromium sulfate, 2.5 parts of ammonium dichromate, 1.5 parts of sodium sulfate, 1.1 parts of magnesium sulfate, 1.5 parts of organic bismuth additive, 6 parts of tannin, 25 parts of phosphoric acid, manna 70 parts of alcohol, 150 parts of polyethylene glycol, and 250 parts of deionized water.

[0051] The organic bismuth additive is prepared by the following method: 3.1mol 2-iodocyanobenzene and 1.5mol isopropylmagnesium chloride are reacted in 200mL dimethyl sulfoxide solution at a low temperature of -25°C to obtain the corresponding active intermediate, and then Add 0.9 mol of bismuth trichloride to continue the reaction, and finally obtain tris-(2-cyanophenyl)bismuth, which is an organic bismuth additive.

[0052] The preparation method of lead-acid storage battery electrolyte, comprises the following steps:

[0053] S1. Weigh each raw material according to the formula;

[00...

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Abstract

The present invention proposes a kind of lead-acid battery electrolyte, comprises following raw material: cobalt sulfate, chromium sulfate, ammonium dichromate, sodium sulfate, magnesium sulfate, organic bismuth additive, tannin, phosphoric acid, mannitol, polyethylene glycol, Deionized water. The invention has simple formula and low cost, and the prepared accumulator electrolyte has better low-temperature resistance and electrical properties, and has wide application.

Description

technical field [0001] The invention relates to the technical field of storage batteries, in particular to a lead-acid storage battery electrolyte and a preparation method thereof. Background technique [0002] The battery industry is an important part of the new energy field, and has become a new hot spot in the global economic development. The lead-acid battery industry is closely related to the power, transportation, and information industries, and is inseparable from various fields of the national economy such as national defense, computers, scientific research, and ports. , From the perspective of sales revenue, lead-acid batteries currently account for more than 80% of the total revenue in the entire field of chemical power sources. The domestic lead-acid battery industry has developed rapidly, and large-scale enterprises have also reached a considerable production scale and a high technical level. Coupled with the increasing demand in the international market, my cou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0567H01M10/0566H01M10/12H01M10/42
CPCH01M10/0566H01M10/0567H01M10/12H01M10/4235H01M2300/0025H01M2300/0091Y02E60/10Y02P70/50
Inventor 罗跃成李桂辉
Owner 湖南省长城新能源科技有限公司
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