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
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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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