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A kind of colloidal electrolyte and preparation method thereof

A colloidal electrolyte and colloid technology, applied in lead-acid batteries and other directions, can solve the problems of difficult perfusion of high-solubility colloids, short gelation time, and high viscosity of colloid electrolytes, so as to prolong the gelation time of colloids, reduce costs, and be easy to colloid. effect of infusion

Active Publication Date: 2019-05-31
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is the strong thixotropy of fumed silica that makes the colloidal electrolyte high viscosity and short gelation time, which leads to the problem of difficulty in pouring the gel. In order to achieve the pouring effect, it is usually necessary to sacrifice the gel by reducing the silica content. Strength, to achieve lower viscosity, which is conducive to glue filling
In order to solve the above problems, a colloid formula and configuration scheme were invented to allow low-solubility colloids to have high-concentration colloid properties, and at the same time effectively prolong the colloid gelation time, which not only reduces costs, but also solves the rare problem of high-solubility colloid perfusion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, the present invention provides a colloidal electrolyte, which is composed of the following components, the mass ratio of each component: 0.5 parts of manna gum, 0.5 parts of silicon dioxide, 34 parts of sulfuric acid, 1 part of sodium sulfate, stannous sulfate 0.5 parts, 57.5 parts of pure water.

[0017] Sulfuric acid is the main active substance of lead-acid batteries; pure water is sulfuric acid diluent, additives, and conductivity; stannous sulfate is analytically pure grade, and its function is to improve conductivity and over-discharge recovery ability; sodium sulfate increases the solubility of lead sulfate, Improve charge acceptance; manna gum is used to thicken sulfuric acid electrolyte and improve the acid-locking stability of sulfuric acid electrolyte; silicon dioxide is gas-phase nano-scale silicon dioxide, which is the main component of the electrolyte, and the hydroxyl group on the surface of silicon dioxide Bridging with sulfate radicals to ...

Embodiment 2

[0019] Embodiment 2, the present invention provides a kind of colloidal electrolyte, is made up of the following components, the mass ratio of each component: Manna gum 1 part, silicon dioxide 2 parts, sulfuric acid 36 parts, sodium sulfate 2 parts, stannous sulfate 1.5 parts, 63.5 parts of pure water.

Embodiment 3

[0020] Example 3, 0.8 parts of manna gum, 1 part of silicon dioxide, 35 parts of sulfuric acid, 1.5 parts of sodium sulfate, 1 part of stannous sulfate, and 60 parts of pure water.

[0021] A kind of preparation method of colloidal electrolyte of the present invention,

[0022] Embodiment 1, comprises the following steps,

[0023] Pump the measured mass ratio of 57.5 parts of pure water into the glue mixing kettle;

[0024] Slowly pump 34 parts of concentrated sulfuric acid into the kettle, and the solution temperature is 40°C;

[0025] Add 1 part of sodium sulfate and 0.5 part of stannous sulfate to the kettle, and cut at a low speed while adding, and the shearing speed is controlled between 500r / min until the sodium sulfate and stannous sulfate are completely dissolved;

[0026] Add 0.5 parts of water-soluble dry gel to the prepared dilute sulfuric acid solution for rapid shear dispersion and dissolution, and the shear rate is controlled between 3000r / min;

[0027] After ...

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PUM

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Abstract

The invention relates to the field of lead-acid storage batteries, and particularly relates to a colloidal electrolyte which is characterized by comprising the following components in parts by mass: 0.5-1 part of Mannan, 0.5-2 parts of silicon dioxide, 34-36 parts of sulfuric acid, 1-2 parts of sodium sulfate, 0.5-1.5 parts of stannous sulfate and 57.5-63.5 parts of pure water. The invention also relates to a preparation method of the colloidal electrolyte. The colloidal electrolyte provided by the invention has properties of high concentration colloidal, effectively prolongs colloidal gelation time, facilitates colloid perfusion and reduces costs.

Description

technical field [0001] The invention relates to the field of lead-acid batteries, in particular to a colloidal electrolyte and a preparation method thereof. Background technique [0002] The gel battery electrolyte uses the surface hydroxyl groups of silica to form a three-dimensional network structure under the bridging effect of sulfate radicals, thereby fixing the sulfuric acid electrolyte and changing it from a liquid state to a gel state. Colloidal electrolyte can effectively prevent stratification of sulfuric acid, so that the charge and discharge of lead-acid batteries are stable; the starting performance and deep discharge resistance performance are well improved; the growth of lead sulfate crystals is also inhibited, and the irreversible sulfate of the plate is reduced , prolonging the battery cycle life. Fumed silica has good thixotropy and gel strength, and is used as a gelling agent by large colloidal battery manufacturers at home and abroad. But it is the stro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/10
CPCH01M10/10Y02E60/10
Inventor 代少振王江林项晨吴鑫
Owner CHAOWEI POWER CO LTD