A kind of lead-acid storage battery electrolyte additive and preparation method thereof
An electrolyte additive, lead-acid battery technology, applied in lead-acid batteries, acid electrolytes, secondary batteries, etc., can solve problems such as poor cycle life improvement, and achieve the effect of reducing sulfation
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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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