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A kind of tubular battery cathode lead paste and preparation method thereof

A battery cathode, tubular technology, applied in battery electrodes, secondary batteries, lead-acid batteries, etc., can solve the problems of low utilization rate of cathode active materials, poor consistency and stability, etc., and is suitable for large-scale promotion and application, qualified The effect of high rate and high connection strength

Active Publication Date: 2021-08-17
湖南超威新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problems of poor paste consistency and stability and low utilization rate of positive electrode active materials in traditional tubular batteries, the present invention provides a tubular battery positive electrode lead with good fluidity and can improve the uniformity of the plate formation effect. paste, thereby improving the utilization rate of the active material of the positive plate of the tubular battery, further enhancing the charging acceptance capacity of the tubular battery, effectively slowing down the sulfation of the positive electrode of the tubular battery, and significantly improving the cycle life of the tubular battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1), according to the formula in Table 1, take the raw materials respectively for subsequent use, and inject 110Kg of deionized water into the special equipment. In the stirring state, add 1.5Kg of polyethylene glycol PEG400 and 0.2Kg of polyethylene glycol with a specific surface area of ​​250m 2 / g, carbon nanotubes with a conductivity of 9S / cm, after all the addition, the suspension was prepared and continued to stir for 20min before use; the suspension was kept in a continuous stirring state before use;

[0040] (2), add 600Kg lead powder into the paste mixing machine, then add 400Kg red lead (Pb 3 o 4 ), 5Kg tetrabasic lead sulfate (4BS), 3Kg sodium sulfate (Na 2 SO 4 ), 5Kg stannous sulfate. After adding, continue to stir for 5 minutes;

[0041] (3) In the state of continuous stirring, within 3 minutes, add the suspension obtained in step (1) into the paste mixer; after adding, continue to stir for 6 minutes;

[0042] (4) Under stirring, inject 100Kg of sulf...

Embodiment 2

[0045] The difference between embodiment 2 and embodiment 1 is that the formula is different (see table 1), and the rest are identical to embodiment 1.

Embodiment 3

[0047] The difference between embodiment 3 and embodiment 1 is that the formula is different (see table 1), and the rest are identical to embodiment 1.

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Abstract

The present invention relates to the technical field of lead-acid batteries, in particular to a tubular battery positive lead paste and a preparation method thereof. The tubular battery positive lead paste comprises the following components in parts by weight: 25-80 parts of lead powder, Pb 3 o 4 20 to 75 parts, 8 to 12 parts of sulfuric acid, 8 to 13 parts of deionized water, 0.2 to 2.0 parts of tetrabasic lead sulfate, 0.2 to 0.8 parts of sodium sulfate, 0.05 to 1.8 parts of stannous sulfate, and 0.01 to 0.1 parts of carbon nanotubes and 0.1 to 0.6 parts of polyethylene glycol. The cathode lead paste of the tubular battery of the present invention can significantly improve the pass rate of extruded paste of the tubular positive plate, reduce the manufacturing process cost of the battery; significantly improve the formation effect of the tubular positive plate, and reduce the gap between the upper and lower parts of the plate. The formation difference; the improvement of the formation effect and the decrease of the internal resistance of the positive electrode active material increase the utilization rate of the positive electrode active material and the capacity of the battery; further enhance the charging acceptance capacity of the battery, and effectively slow down the sulfuric acid on the positive electrode of the tubular battery. Salinization significantly improves the cycle life of tubular batteries.

Description

technical field [0001] The invention relates to the technical field of lead-acid storage batteries, in particular to a tubular battery cathode lead paste and a preparation method thereof. Background technique [0002] As we all know, compared with flat-plate lead-acid batteries, due to the protective effect of the positive plate casing, in the actual use process, the positive active material of the positive electrode has a stronger ability to resist softening and falling off, and the binding force between the active material and the lead bar of the grid is stronger, and the battery life is longer. has obvious advantages. [0003] At present, there are mainly three production processes for filling the active material of the tubular positive plate, including powder filling, grouting and paste extrusion. Due to the high noise and dust in the working environment, the powder filling process has been listed as backward production capacity and restricted elimination objects by the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/57H01M4/62H01M10/12
CPCH01M4/362H01M4/57H01M4/62H01M4/628H01M10/123Y02E60/10Y02P70/50
Inventor 张崇波李有德张祚强赵刚李祥军
Owner 湖南超威新材料有限公司
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