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High-binding-force positive electrode lead paste for punching net grid and preparation method and application of positive electrode lead paste

A positive lead paste and binding force technology, applied in the field of battery chemistry, can solve the problems of increasing battery pollution, increasing production costs, slow dissolution rate, etc., and achieving the effects of being environmentally friendly, reducing impact, and improving binding force

Active Publication Date: 2020-08-11
HENAN CHILWEE GENSHORE POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of sodium perborate significantly increases the production cost, and the dissolution rate is slow and the efficiency is low. The existence of boron further increases the pollution of the battery to the environment. Boron has obvious harm to soil, crops, etc.

Method used

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  • High-binding-force positive electrode lead paste for punching net grid and preparation method and application of positive electrode lead paste
  • High-binding-force positive electrode lead paste for punching net grid and preparation method and application of positive electrode lead paste
  • High-binding-force positive electrode lead paste for punching net grid and preparation method and application of positive electrode lead paste

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preparation example Construction

[0036] The present invention also provides a method for preparing positive electrode lead paste for punching grids with high binding force, the method comprising the following steps:

[0037] (1) prepare raw material lead powder, red lead, short fiber, graphene oxide, tetrabasic lead sulfate, silicon dioxide, zinc oxide, sulfuric acid, solid alkali according to the raw material ratio of above-mentioned requirement (being prepared as mass fraction is 10% solid alkali aqueous solution), sodium percarbonate;

[0038] (2) Add lead powder, red lead, short fiber, graphene oxide, tetrabasic lead sulfate, silicon dioxide and zinc oxide in step 1 and stir in the paste machine for 10 to 15 minutes, and mix well to obtain a mixed material;

[0039] (3) Slowly add deionized water to the mixed material obtained in step (2), then stir for 7 to 10 minutes, and stir evenly to obtain a mixture;

[0040] (4) Slowly add a solid alkali aqueous solution with a mass fraction of 10% to the mixture ...

Embodiment 1

[0053] A positive lead paste for punching grids with high binding force, the lead paste is prepared from the following raw materials: 100Kg lead powder, 7.5Kg red lead, 0.0625Kg short fiber, 0.3125Kg graphene oxide, 0.625 tetrabasic lead sulfate Kg, fumed silica 0.01875Kg, zinc oxide 0.01875Kg, deionized water 10Kg, 10% sodium hydroxide aqueous solution 1.25Kg, 1.400g / m 3 6.25Kg of sulfuric acid, 0.09375Kg of sodium percarbonate, and adjust the apparent density of the lead paste at 4.0-4.3g / m 3 , Penetration / ring 22.

Embodiment 2

[0055] A positive lead paste for punching grids with high binding force, the lead paste is prepared from the following raw materials: 100Kg lead powder, 10Kg red lead, 0.075Kg short fiber, 1.400g / m 3 Sulfuric acid 7.5Kg, graphene oxide 0.35Kg, tetrabasic lead sulfate 0.75Kg, fumed silica 0.0225Kg, zinc oxide 0.0225Kg, deionized water 12.5Kg, 10% sodium hydroxide aqueous solution 1.5Kg, sodium percarbonate 0.09375 Kg, adjust the apparent density of the lead paste at 4.0-4.3g / m 3 , Penetration / ring 22.

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Abstract

The invention discloses positive electrode lead paste for a high-binding-force impact net grid and a preparation method thereof. The lead plaste is prepared from the following raw materials in percentage, by mass, 78%-84% of lead powder, 5%-8% of red lead, 5.4%-8.3% of sulfuric acid, 0.05%-0.06% of short fibers, 0.2%-0.3% of graphene oxide, 0.5%-0.7% of tetrabasic lead sulfate, 0.01%-0.03% of silicon dioxide, 0.01%-0.02% of zinc oxide, 0.05%-0.15% of sodium percarbonate, 0.1%-0.3% of solid alkali and the balance of deionized water. The lead plaste is advantaged in that through interaction of components, the binding force between the lead plaster and the grid and the binding force between the lead plaster and the grid are improved, and the binding force is greatly improved compared with traditional lead plaster and a traditional process; performance of a battery obtained by adopting the grid lead paste is obviously improved, low-temperature starting performance is good, and cycling stability is good; and the lead plaste is low in cost and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of accumulator chemistry. In particular, it relates to a positive lead paste for punching grids with high binding force and its preparation method and application, that is, it relates to a positive lead paste matched with a battery punching grid process and a preparation method thereof. [0002] technical background [0003] The core component of the battery is the pole plate, and the performance of the pole plate is directly determined by the grid and lead paste. In the storage battery, due to the smooth surface and small contact surface, the punched grid is not easy to combine with the lead paste in the preparation process. In the traditional process, roughening treatment such as roughening is often performed on the smooth panel grid to increase the roughness of the grid surface to enhance the bonding strength between the grid and the lead paste. It is also possible to improve the bonding force between th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/57H01M4/73H01M10/12
CPCH01M4/57H01M4/73H01M10/12Y02E60/10Y02P70/50
Inventor 呼梦娟梁艳丽王欢柴成雷李翔
Owner HENAN CHILWEE GENSHORE POWER
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