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Special colloidal electrolyte applicable to internal formation process and preparation method thereof

A colloidal electrolyte and internalization technology, applied in lead-acid batteries and other directions, can solve the problem of difficult to apply the battery internalization process requirements and other problems, and achieve the effects of excellent flow permeability, reduced internal resistance, and uniform dispersion.

Active Publication Date: 2012-06-13
JIANGSU XINRI E VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult for conventional colloidal electrolytes to meet the requirements of the internal formation process of batteries.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1: Add 1.5Kg of anhydrous sodium sulfate to 35Kg of dilute sulfuric acid, mix and stir at a constant speed for 30 minutes to 2 hours, fully dissolve it to form raw material solution A, and set aside.

[0038] Step 2: Mix 61Kg deionized water and 1.5Kg fumed silica, stir at a constant speed at 2000-3000 rpm, add 0.2Kg persulfate while stirring, and add 0.015Kg isopropanol after 5-10 minutes Continue to stir for 5-10 minutes to form material liquid B, set aside.

[0039] Step 3: After mixing and stirring the raw materials A and B at a constant speed of 2000-3000 rpm, add 0.015Kg of potassium soap and continue stirring for 2-3 minutes, then add 0.2Kg of acrylamide and 0.0015Kg of chain promoter and stir After 2-3 minutes, finally add 0.01Kg of anti-aging agent and 0.01Kg of fluorine-based-silicon-free defoamer, and disperse in the dispersion equipment for 1 to 3 hours to obtain the required electrolyte.

Embodiment 2

[0041] Step 1: Add 1Kg of anhydrous potassium sulfate to 90Kg of dilute sulfuric acid, mix and stir at a constant speed for 30 minutes to 2 hours, fully dissolve it to form raw material solution A, and set aside.

[0042] Step 2: Mix 4.77Kg deionized water and 3Kg fumed silica, stir at a constant speed at 2000-3000 rpm, add 0.3Kg persulfate while stirring, and add 0.2Kg isopropanol after 5-10 minutes Continue to stir for 5-10 minutes to form material liquid B, set aside.

[0043] Step 3: After mixing and stirring the raw material liquids A and B at a constant speed of 2000-3000 rpm, add 0.2Kg of potassium soap and continue stirring for 2-3 minutes, then add 0.3Kg of acrylamide and 0.3Kg of chain accelerator and stir After 2-3 minutes, finally add 0.2Kg of anti-aging agent and 0.02Kg of fluorine-based-silicon-free defoamer, and disperse in the dispersion equipment for 1 to 3 hours to obtain the required electrolyte.

Embodiment 3

[0045] Step 1: Add 1Kg of anhydrous potassium sulfate to 30Kg of dilute sulfuric acid, mix and stir at a constant speed for 30 minutes to 2 hours, fully dissolve it to form raw material solution A, and set aside.

[0046] Step 2: Mix 57.68Kg deionized water and 0.1Kg fumed silica, stir at a constant speed at 2000-3000 rpm, add 0.3Kg persulfate while stirring, and add 0.2Kg isopropyl after 5-10 minutes The alcohol continued to stir for 5-10 minutes to form material liquid B, which was set aside.

[0047] Step 3: After mixing and stirring the raw material liquids A and B at a constant speed of 2000-3000 rpm, add 0.2Kg of potassium soap and continue stirring for 2-3 minutes, then add 0.2Kg of acrylamide and 0.1Kg of chain accelerator and stir After 2-3 minutes, finally add 0.2Kg anti-aging agent and 0.1Kg fluorine-based-silicon-free defoamer, and disperse in the dispersion equipment for 1 hour to 3 hours to obtain the required electrolyte.

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PUM

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Abstract

The invention discloses a special colloidal electrolyte applicable to an internal formation process and a preparation method thereof. The colloidal electrolyte is prepared from the following components by weight: 0.1 to 3 parts of gas phase silica, 30 to 90 parts of sulfuric acid, 0.1 to 1.5 parts of anhydrous sodium sulfate and / or potassium sulfate, 0.01 to 0.2 part of isopropanol, 0.01 to 0.3 part of acrylamide, 0.01 to 0.3 part of persulfate, 0.01 to 0.02 part of a fluorine-based silicone-free antifoaming agent, 0.01 to 0.2 part of an anti-aging agent, 0.001 to 0.1 part of a chain promoter and 8 to 66 parts of deionized water. According to the invention, through combination of functional additives with reaction products, the prepared colloidal electrolyte has a stable system, is uniformly dispersed and has excellent flow permeability, conductive characteristics and a function of electrophoretic mobility shift; the colloidal electrolyte effectively reduce internal resistance of a gel battery and overcomes the disadvantages of poor flow permeability of conventional colloid perfusion and too early gelation during the process of internal formation charging of a battery, and therefore, the colloidal electrolyte is applicable to the internal formation process, allows usage performance of a lead acid battery to be improved and the service life of an internal-formation gel battery to be prolonged.

Description

technical field [0001] The invention relates to a special colloidal electrolyte suitable for an internalization process and a preparation method thereof, belonging to the technical field of lead-acid batteries. Background technique [0002] At present, batteries have been widely used in various fields, especially in the field of electric vehicles, where batteries are currently an irreplaceable power source. The commonly used colloidal electrolyte production method is generally to disperse fumed silica with a content greater than 3% into water, add sodium sulfate, CMC, stannous sulfate, phosphoric acid, PVA, glycerin, polyacrylamide, defoamer and other substances. High-speed shear dispersion into emulsion, mixed with a certain content of high-concentration sulfuric acid in a certain proportion and then poured into the battery. The colloidal electrolyte gel state prepared by this method is unstable. Under the multiple effects of thickening and flocculation, it is extremely It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/10
CPCY02E60/126Y02E60/10
Inventor 刘继民何海军
Owner JIANGSU XINRI E VEHICLE