Lead-acid storage battery electrolyte and preparation method thereof

A lead-acid battery, electrolyte technology, applied in lead-acid battery, lead-acid battery construction, electrolyte and other directions, to achieve the effect of inhibiting PCL phenomenon, improving low temperature performance, and improving charging acceptability

Active Publication Date: 2020-11-13
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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  • Lead-acid storage battery electrolyte and preparation method thereof
  • Lead-acid storage battery electrolyte and preparation method thereof

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Effect test

Embodiment 1

[0032] Raw material composition (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, 200 parts of deionized water.

[0033] The organic bismuth additive is prepared by the following method: 3mol 2-iodocyanobenzene and 1mol isopropylmagnesium chloride are reacted in 200mL dimethylsulfoxide solution at a low temperature of -20℃ to obtain the corresponding active intermediate, and then 0.8 The mol bismuth trichloride continues to react, and finally tri-(2-cyanophenyl) bismuth is obtained, which is an organic bismuth additive.

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

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

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

Embodiment 2

[0041] Raw material composition (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 additives, 10 parts of tannins, 50 parts of phosphoric acid, and manna 100 parts of alcohol, 300 parts of polyethylene glycol, 400 parts of deionized water.

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

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

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

[0045] S2. Heat 1 / 5 of deionized wate...

Embodiment 3

[0050] Raw material composition (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 additives, 6 parts of tannins, 25 parts of phosphoric acid, and manna 70 parts of alcohol, 150 parts of polyethylene glycol, 250 parts of deionized water.

[0051] The organic bismuth additive is prepared by the following method: 3.1 mol 2-iodocyanobenzene and 1.5 mol isopropyl magnesium chloride are reacted in 200 mL 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 prepare tris-(2-cyanophenyl) bismuth, which is an organic bismuth additive.

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

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

[0054] S2. Heat 1 / ...

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Abstract

The invention discloses a lead-acid storage battery electrolyte, which comprises the following raw materials: cobalt sulfate, chromium sulfate, ammonium dichromate, sodium sulfate, magnesium sulfate,an organic bismuth additive, tannin, phosphoric acid, mannitol, polyethylene glycol and deionized water. The formula is simple, the cost is relatively low, and the prepared storage battery electrolytehas relatively good low-temperature resistance and electrical properties and is wide in application range.

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 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 total revenue in the entire chemical power supply field. The domestic lead-acid battery industry has developed rapidly, and large-scale enterprises have also reached a considerable production scale and high technical level. Coupled with increasing demand in the international market, my country has become one of the largest expo...

Claims

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Application Information

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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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