Polymeric additive for lead storage battery and preparation method of polymeric additive
A lead-acid battery and additive technology, applied in lead-acid batteries and other directions, can solve the problems of unsatisfactory electrochemical performance, high viscosity and poor processability of lead-acid batteries, and achieve the effect of improving electrochemical performance, wide application and good use effect.
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[0038] The polymerization additive for lead-acid batteries described in the present invention cannot be mixed by a one-pot method, and must be prepared by following a certain process after preparing the materials. The preparation method includes:
[0039] 1) The industrial pure water is divided into two parts, and the emulsifier is divided into three parts for subsequent use;
[0040] 2) fully stir and mix the A component and the B component;
[0041] 3) Adjust the HLB of one part of the emulsifier to 7-9, add one part of industrial pure water, stir and mix well, then add it to the mixture obtained in step 2), and then use the other part of the emulsifier to distill this step The HLB of the resulting mixture is adjusted to 10-14;
[0042] 4) Adjust the HLB of another part of the emulsifier to 10-14, add another part of industrial pure water, mix well, then add the fumed silica, and stir for more than 10 minutes;
[0043] 5) Add the montmorillonite aqueous solution to the mix...
Embodiment 1
[0062] Design a kind of target to be added in lead storage battery with sulfuric acid liquid, can increase the polymerization additive of anti-softening ability of positive pole active material, this polymerization additive is in 100 parts by volume, and component and content are:
[0063] Component A: use a siloxane with several (-Si-O-Si-) segment structures in the main chain skeleton, its side group contains H, the molecular weight is 1200, and the addition amount is 7 parts by volume;
[0064] Component B: methyl silicone oil with a viscosity of 1000 Pa, 7 parts by volume;
[0065] Industrial pure water: 83 parts by volume;
[0066] Fumed silica: 2 parts by volume (conversion value of weight / specific gravity);
[0067] Aqueous solution of montmorillonite: 0.5 parts by volume
[0068] 0.5 parts by volume of emulsifier: choose Span 20 and Tween 80, of which Span 20 is prepared for 0.2 parts by volume, and Tween 80 is prepared for 0.3 parts by volume. The actual dosage can ...
Embodiment 2
[0078] Mix the polymerization additive obtained in Example 1 with the sulfuric acid solution of a lead storage battery with a density of 1.245 in a volume ratio of 1:99, and use it as a colloidal electrolyte in which a siloxane composition, silicon dioxide and sulfuric acid solution are mixed.
[0079] The colloidal electrolyte is filled into a 2V500Ah lead-acid battery with a valve-regulated AGM separator structure for energy storage, and after conventional impregnation and formation charging, it becomes a high-temperature-resistant colloidal lead-acid battery for outdoor energy storage. The polymeric additive of this example is used to fill lead-acid batteries with sulfuric acid solution at a volume ratio of 1:99. Under the same density of sulfuric acid solution, the lead-acid batteries can obviously reduce internal resistance and increase capacity.
[0080] In this embodiment, anhydrous sodium sulfate commonly used in the lead storage battery industry can also be added to th...
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Abstract
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