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Two-phase composition used for lead storage battery and preparation method of two-phase composition

A technology for a lead storage battery and a composition is applied in the field of a two-phase composition for a lead storage battery and the preparation thereof, and can solve the problem that it is difficult to obtain stable coupling, the electrochemical activity of the lead storage battery does not contribute to the internal resistance, and the electrochemical performance of the lead storage battery is insufficient. It can improve the electrochemical activity, wide application and good use effect.

Inactive Publication Date: 2018-01-09
东莞恒量新能源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the development of material formulations in recent years, the industry has tried to apply a class of biodegradable vinyl polymer materials, but some methods of adding vinyl polymer materials to sulfuric acid solution or silica colloid are not satisfactory. The reason is: vinyl polymer is a kind of polymer material, it is difficult to obtain stable coupling by directly adding it into the water phase system, and the electrochemical pe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0041] The two-phase composition for the lead-acid storage battery of 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:

[0042] 1) Fully stir and mix the A component and the B component, then add the C component, fully stir and mix;

[0043] 2) Add the D component to the mixture obtained in step 1), stir and mix well to obtain the siloxane composition;

[0044] 3) Stir and mix the fumed silica and the industrial pure water evenly, and adjust the pH value of the mixture to 8-10 with the alkaline regulator during the full stirring and mixing process;

[0045] 4) Add the sodium lauryl sulfate to the mixture obtained in step 3), stir and mix well to obtain the silicon dioxide mixed solution;

[0046] 5) Mix the silicon dioxide mixed liquid obtained in step 4) and the siloxane composition obtained in step 2) uniformly according to the volume ratio range to ...

Embodiment 1

[0062] Design a kind of two-phase composition that is added in sulfuric acid liquid of lead accumulator, can increase the anti-softening ability of positive electrode active material, this two-phase composition is formed by the combination of siloxane composition of 70 parts by volume and fumed silicon dioxide of 30 parts by volume into, wherein, the siloxane composition is based on 100 parts by volume, and the components and contents 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 15 parts by volume;

[0064] Component B: methyl silicone rubber with a viscosity of 1000 Pa, 15 parts by volume;

[0065] Component C: 10wt% methyl orthosilicate, 69 parts by volume;

[0066] Component D: 1 volume part of water-soluble polyvinyl alcohol liquid with an active substance content of 8%;

[0067] Described silicon dioxide mixed solution ...

Embodiment 2

[0080] Mix the two-phase composition obtained in Example 1 with the sulfuric acid solution of a lead storage battery with a density of 1.245 at a volume ratio of 1:99 to form a colloidal electrolyte mixed with a two-phase composition and sulfuric acid solution for a lead storage battery.

[0081] The colloidal electrolyte described in this example is filled into a 2V500Ah lead-acid battery with a valve-regulated AGM separator structure for energy storage, and after conventional impregnation and conversion charging, it becomes a high-temperature-resistant special colloidal lead-acid battery. The two-phase composition 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.

[0082] In this embodiment, anhydrous sodium sulfate commonly used in the lead storage battery industry can also be added ...

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Abstract

The invention provides a two-phase composition used for a lead storage battery and a preparation method of the two-phase composition. The two-phase composition is formed by combining 10 to 90 parts byvolume of siloxane composition and 10 to 90 parts by volume of silica mixed liquor; based on 100 parts by volume, the siloxane composition is prepared from 2 to 15 parts by volume of siloxane with abackbone skeleton of a (-Si-O-Si-) structure, 2 to 15 parts by volume of organic silicon rubber, 68 to 95.8 parts by volume of tetramethyl orthosilicate and 0.2 to 1 part by volume of polyvinyl alcohol; based on 100 parts by volume, the silica mixed liquor is prepared from 5 to 15 parts by volume of fumed silica, 83 to 94.8 parts by volume of industrial pure water and 0.2 to 2 parts by volume of lauryl sodium sulfate. The two-phase composition is prepared by a technical method provided by the invention, is used for mixing sulfuric acid liquor, and has the advantages of capabilities of enhancing softening-resistant capacity of a positive active material and helping a softened active material restore to a hardened state after being added into the lead storage battery, fewer addition amount and high cost performance.

Description

technical field [0001] The invention relates to the technical field of materials for lead storage batteries, in particular to a two-phase composition for lead storage batteries and a preparation method thereof. Background technique [0002] In recent years, the energy storage market has generally demanded large-capacity lead-acid batteries for supporting applications. However, conventional lead-acid batteries have a short lifespan and a high waste rate when used outdoors, which restricts the commercial application of energy storage systems. The industry generally agrees that adding an appropriate amount of colloidal substances to the sulfuric acid solution of lead-acid batteries can effectively increase the life of outdoor use. The colloidal material traditionally used in lead storage batteries is fumed silica. In addition, in the Chinese Invention Patent Publication No. CN1383225A, a class of siloxane compositions mixed with polyelemental organosiloxane, silicone oil and or...

Claims

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Application Information

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IPC IPC(8): H01M10/10
CPCY02E60/10
Inventor 刘粤荣廖媛菲
Owner 东莞恒量新能源科技有限公司