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Colloidal electrolyte for lead-acid storage battery

A colloidal electrolyte, lead-acid battery technology, applied in lead-acid batteries and other directions, can solve the problems of poor thixotropy, rapid aging, and easy hydration of colloidal electrolyte, and achieve high current discharge capacity, small self-discharge, and internal resistance. low effect

Active Publication Date: 2011-04-13
SHUANGDENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a colloidal electrolyte for lead-acid batteries to solve the problems of poor thixotropy, easy hydration, fast aging, and easy dryness of the colloidal electrolyte made of ordinary silica sol.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1. Select hydroxypropyl methylcellulose, acrylamide, and polyethylene glycol, take samples according to the mass percentages of 1.7%, 0.03%, and 0.09% in each ton of colloidal electrolyte, add 1000ml of pure water, heat to dissolve, and cool for later use. For component A.

[0015] 2. Select caratocyanin and potassium soap, take samples according to the mass percentages of 0.015% and 0.035% per ton of colloidal electrolyte, add them to 800ml of water, heat and dissolve, then cool for later use, and this is component B.

[0016] 3. According to the mass percentage of each component of colloidal electrolyte, weigh an appropriate amount of pure water and put it into a high-speed disperser; add 42% analytically pure sulfuric acid, stir and cool to 40-60°C; add 1.2% analytically pure sodium sulfate and 9.5% fumed silica, stirred at a high speed for 1.5 hours, and the stirring line speed was kept at 10-20m / s.

[0017] 4. Add component A and component B into the mixer and con...

Embodiment 2

[0019] 1. Select hydroxypropyl methylcellulose, acrylamide, and polyethylene glycol, take samples according to the mass percentages of 2%, 0.04%, and 0.08% in each ton of colloidal electrolyte, add 1000ml of pure water, heat to dissolve, and cool for later use. For component A.

[0020] 2. Select caratocyanin and potassium soap, take samples according to the mass percentages of 0.02% and 0.04% per ton of colloidal electrolyte, add them to 800ml of water, heat and dissolve, then cool for later use, and this is component B.

[0021] 3. According to the mass percentage of each component of colloidal electrolyte, weigh an appropriate amount of pure water and put it into a high-speed disperser; add 43% analytically pure sulfuric acid, stir and cool to 40-60°C; add 1.4% analytically pure sodium sulfate and 9.6% fumed silica, stirred at a high speed for 1.5 hours, and the stirring line speed was kept at 10-20m / s.

[0022] 4. Add component A and component B into the mixer and continu...

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Abstract

The invention discloses colloidal electrolyte for a lead-acid storage battery. The electrolyte is composed of the following components in percentage by weight: 40-48 percent of sulfuric acid, 7-15 percent of nano gas-phase silicon dioxide, 0.3-5 percent of sodium sulfate, 0.5-5 percent of hydroxypropyl methyl cellulose, 0.07-0.15 percent of acrylamide, 0.01-0.05 percent of polyethylene glycol, 0.01-0.04 percent of vanillin, 0.01-0.18 percent of soft soap, and the balance of pure water. By utilizing the colloidal electrolyte, the problems that the colloidal electrolyte prepared by utilizing common colloidal silica has poor thixotropy, is easy to hydrate, is rapid to age and is easy to dry are solved. The storage battery filled with the colloidal electrolyte has the advantages of good thixotropy, low internal resistance, low self-discharge, strong high-current discharging capacity and good low temperature resistance, and the capacity and cycle life of the battery are improved.

Description

technical field [0001] The invention relates to a colloidal electrolyte for a lead-acid storage battery. Background technique [0002] Colloidal electrolyte has the advantages of immobility, not easy to leak acid, can prevent active material from falling off, reduce self-discharge, good low temperature resistance, prolong battery life, etc., and has obvious advantages in the application process. However, as far as gel batteries are concerned, the most critical technology is the formulation of gel electrolytes, and different formulations have a great impact on the performance of gel batteries. At present, the colloidal electrolytes produced in China mainly use sulfuric acid and silica sol as the main raw materials. The colloidal electrolytes produced have poor thixotropy, easy hydration, fast aging, easy dryness, and cracks, which lead to increased internal resistance of the battery. The current discharge performance is reduced, the self-discharge is fast, the battery capaci...

Claims

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Application Information

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IPC IPC(8): H01M10/08
CPCY02E60/126Y02E60/10
Inventor 徐志彬
Owner SHUANGDENG GRP
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