Silicon dioxide colloid pole plate and preparation method and application thereof

A silica and colloid technology, applied in battery electrodes, lead-acid battery electrodes, electrical components, etc., to reduce water loss, reduce resistance, and reduce usage

Active Publication Date: 2016-01-27
ZHEJIANG TIANNENG POWER ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve many problems of the existing silica gel electrolyte batteries, the invention provides a silica colloidal plate with low production cost and good consistency of silica on the surface of the plate and a preparation method thereof

Method used

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  • Silicon dioxide colloid pole plate and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Coating: Place the raw plate on the gluing machine, the plate relies on the vacuum suction cup to absorb the plate lug, close the vacuum suction cup, the plate falls on the chain, the chain hook drives the plate, and the mass fraction is 0.2wt % silica colloidal aqueous solution was spray-coated on the upper and lower sides of the raw electrode plate, and then stood still for 0.5h to obtain a wet electrode plate.

[0031] (3) Drying: The wet plate is transported to the surface drying kiln by a chain hook, and it is dried by three stages of temperature control. h; the second stage is at 200°C, and the drying time of the second stage is 0.5h; the third stage is at 160°C, and the drying time of the third stage is 1h; a silica colloidal plate is obtained. After measurement, the moisture content of the prepared silica colloidal plate was 0.3%.

Embodiment 2

[0033] (1) Pretreatment: completely immerse the raw plate in dilute sulfuric acid aqueous solution with a density of 1.06g / mL, soak the positive plate for 40 minutes, and soak the negative plate for 20 minutes, then dry it at 30-60°C for 1- 2h, get the acid-leached plate;

[0034] (2) Coating: Place the acid leached plate on the gluing machine, the plate relies on the vacuum suction cup to absorb the plate lug, close the vacuum suction cup, the plate falls on the chain, the chain hook drives the plate, and the mass fraction is 0.3 The wt% silica colloidal aqueous solution was spray-coated on the upper and lower sides of the raw electrode plate, and then left to stand for 0.5h to obtain a wet electrode plate.

[0035] (3) Drying: The wet plate is transported to the surface drying kiln by a chain hook, and is dried by three stages of temperature control. h; the second stage is 210°C, and the drying time of the second stage is 0.7h; the third stage is 160°C, and the drying time ...

Embodiment 3

[0037] (1) Pretreatment: Immerse the raw plate completely in dilute sulfuric acid aqueous solution with a density of 1.09g / mL, soak the positive plate for 50 minutes, and soak the negative plate for 25 minutes, then dry it at 30-60°C for 1- 2h, get the acid-leached plate;

[0038] (2) Coating: Place the acid leached plate on the gluing machine, the plate relies on the vacuum suction cup to absorb the plate lug, close the vacuum suction cup, the plate falls on the chain, the chain hook drives the plate, and the mass fraction is 0.3 The wt% silica colloidal aqueous solution was spray-coated on the upper and lower sides of the raw electrode plate, and then left to stand for 0.5h to obtain a wet electrode plate.

[0039] (3) Drying: The wet plate is transported to the surface drying kiln by a chain hook, and it is dried by three stages of temperature control. h; the second stage is 210°C, and the drying time of the second stage is 0.6h; the third stage is 180°C, and the drying ti...

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PUM

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Abstract

The invention discloses a silicon dioxide colloid pole plate and a preparation method and application thereof. The preparation method comprises the following steps of spraying and applying a silicon dioxide colloid aqueous solution on the front side and the back side of a fresh pole plate, and allowing the fresh pole plate to stand to obtain a wet pole plate, wherein the concentration of a silicon dioxide colloid in the silicon dioxide colloid aqueous solution is 0.2-0.5 wt%; and carrying out temperature-control drying on the wet pole plate to obtain the silicon dioxide colloid pole plate. By the method, the consistency of the silicon dioxide colloid on the surface of the pole plate is improved, a phenomenon of acid liquid layering is reduced, the oxygen combination efficiency of the pole plate is reduced, the water loss of a battery is reduced, and the service lifetime of the battery is improved.

Description

technical field [0001] The invention relates to the field of battery production, in particular to a silica colloidal plate, a preparation method and an application thereof. Background technique [0002] The production process of electric vehicle batteries is relatively complicated, and the control requirements of each production process are relatively strict, because the use mode of electric vehicle batteries is to run high-current deep discharge, and the problem of poor consistency of the battery is prone to occur after high-current deep discharge. After long-term use There is a single lagging behind. In order to solve the problem of poor consistency of a single battery, some manufacturers usually add a small amount of colloidal silica mother liquor to the electrolyte in order to solve this problem, which is conducive to improving the charge acceptance and low-temperature discharge performance of the battery. [0003] Disclosed a kind of lead-acid storage battery colloidal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/20H01M4/36
CPCH01M4/20H01M4/366Y02E60/10
Inventor 张林山佘伟尹明成
Owner ZHEJIANG TIANNENG POWER ENERGY
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