Preparation technology of electrolyte doped with mixed colloidal silica

A colloidal electrolyte and preparation technology, applied in the direction of lead-acid batteries, etc., can solve the problems of high viscosity, etc., and achieve the effects of good fluidity, long thinning time, and wide use conditions

Active Publication Date: 2012-08-15
淄博明泰电器科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fumed silica is a very good thickening thixotropic agent. The reason for thickening thixotropy is that the surface of fumed silica has highly active silanol groups, and its viscosity is extremely high. Therefore, when some water-soluble polymer materials are added, Such as polyvinyl alcohol, lake essence, glycerin, polyethylene glycol, polyacrylamide, fatty alcohol polyoxyethylene ether, etc., the above additives can delay the gelation process, thereby affecting the thixotropy of the colloidal electrolyte

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Provide a kind of preparation technology of the doped mixed silicon colloidal electrolyte that lead-acid accumulator is used, it is characterized in that comprising the following steps:

[0021] a. Preparation of sodium silicate colloid: use deionized water to dilute the water glass to a density of 1.05g / cm 3 , treated with anion and cation exchange resins to remove Na + Finally, use acid to adjust the pH value to be equal to 6, and obtain silica sol after heating, aging and concentrating; dilute sulfuric acid, the aqueous solution of the above-mentioned silica sol, siloxane aqueous solution, ethylene glycol aqueous solution, phosphoric acid aqueous solution and stannous sulfate aqueous solution according to The mass fraction of 100:5:1:2:2:1 is mixed to obtain sodium silicate colloid;

[0022] b. Prepare fumed silica colloid: mix dilute sulfuric acid, fumed silica emulsion and oxalic acid aqueous solution in parts by mass of 100:15:0.5 to prepare fumed silica colloid;...

Embodiment 2

[0035] Provide a kind of preparation technology of the doped mixed silicon colloidal electrolyte that lead-acid accumulator is used, it is characterized in that comprising the following steps:

[0036] a. Preparation of sodium silicate colloid: use deionized water to dilute the water glass to a density of 1.06g / cm 3 , treated with anion and cation exchange resins to remove Na + Finally, use acid to adjust the pH value to be equal to 6, and obtain silica sol after heating, aging and concentrating; dilute sulfuric acid, the aqueous solution of the above-mentioned silica sol, siloxane aqueous solution, ethylene glycol aqueous solution, phosphoric acid aqueous solution and stannous sulfate aqueous solution according to The mass fraction of 100:10:5:5:4:3 is mixed to obtain sodium silicate colloid;

[0037] b. Prepare fumed silica colloid: mix dilute sulfuric acid, fumed silica emulsion and oxalic acid aqueous solution in parts by mass of 100:25:4 to prepare fumed silica colloid; ...

Embodiment 3

[0049] Provide a kind of preparation technology of the doped mixed silicon colloidal electrolyte that lead-acid accumulator is used, it is characterized in that comprising the following steps:

[0050] a. Preparation of sodium silicate colloid: use deionized water to dilute the water glass to a density of 1.06g / cm 3 , treated with anion and cation exchange resins to remove Na + Finally, use acid to adjust the pH value to be equal to 6, and obtain silica sol after heating, aging and concentrating; dilute sulfuric acid, the aqueous solution of the above-mentioned silica sol, siloxane aqueous solution, ethylene glycol aqueous solution, phosphoric acid aqueous solution and stannous sulfate aqueous solution according to The mass fraction of 100:7:3:3:2:2 is mixed to obtain sodium silicate colloid;

[0051] b. Prepare fumed silica colloid: mix dilute sulfuric acid, fumed silica emulsion and oxalic acid aqueous solution in parts by mass of 100:20:2 to prepare fumed silica colloid; ...

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Abstract

The invention relates to a preparation technology of electrolyte doped with mixed colloidal silica for a lead-acid battery. The preparation technology belongs to the technical field of lead-acid batteries and is characterized by comprising the following steps of: diluting sodium silicate by virtue of deionized water, adjusting the pH value to equal to 6 by virtue of acid after removing Na+, performing the procedures of heating, ageing and concentrating to obtain colloidal silica, and then mixing dilute sulphuric acid, water solution of the colloidal silica, water solution of siloxane, water solution of glycol, water solution of phosphoric acid and water solution of stannous mono-sulphate to obtain sodium silicate colloid; mixing the dilute sulphuric acid, fume silica emulsion and water solution of oxalic acid to prepare fumed silica colloid; and mixing the sodium silicate colloid and the fumed silica colloid to obtain the electrolyte doped with the mixed colloidal silica. The prepared colloids are semitransparent liquid; after shear thinning, the colloid diluting time is long, and the colloids are not layered and hydrated; and the mixed colloids are uniform, fine and smooth, good in mobility, and easy to be injected.

Description

technical field [0001] The invention relates to a preparation process of a doped mixed silica colloid electrolyte for lead-acid batteries, belonging to the field of lead-acid batteries. Background technique [0002] In the 1920s, Americans began to study colloidal batteries, and it was not until 1996 that German Sunshine Company (Sonennschein) really realized the industrialization of colloidal batteries. China's research on colloidal batteries began in the 1950s and reached its climax in the late 1980s and early 1990s. At that time, the silicon material studied was mainly industrial water glass, and there were no successful cases due to many impurities. With the deepening of reform and opening up and the increase of technical exchanges with foreign countries, it is known that fumed silica is used in colloidal electrolytes, which has attracted scientific and technical personnel to study and pay attention to fumed silica. Fumed silica is a very good thickening thixotropic age...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/10
CPCY02E60/10
Inventor 张健白宗玉关英伟王光庆
Owner 淄博明泰电器科技有限公司
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