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Novel lead-acid storage battery negative electrode lead paste and preparation method thereof

A lead-acid battery and negative lead paste technology, applied in the field of electrochemistry, can solve the problems of affecting the service life of the battery, easy softening and falling off, poor mechanical strength of the active material of the electrode plate, etc., to improve the battery capacity and the cycle performance of the battery, delay the The effect of softening and falling off and increasing the real area

Inactive Publication Date: 2018-11-13
HENAN CHAOWEI POWER SUPPLY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the active material of the plate has poor mechanical strength and is easy to soften and fall off, which seriously affects the service life of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A new negative lead paste for lead-acid battery, the negative lead paste is prepared from the following raw materials: 84-86% lead powder, 6-8% sulfuric acid, 0.05-0.15% composite carbon fiber, 0.3% p-Nanthracene blue, 0.05% graphite 0.10%, 0.3-0.5% humic acid, 0.5% barium stearate, and the balance is deionized water; the sum of the weight percentages of each raw material is 100%.

[0027] 120-124 g of the negative electrode paste is coated on a Pb—Ca alloy grid to prepare a negative electrode sheet, and the prepared negative electrode sheet is cured in a curing chamber. The cured negative plate group and the positive plate prepared by the conventional method are assembled into a battery, and the density of the electrolyte is 1.26g / cm 3 The sulfuric acid is converted, and after the conversion is completed, the performance of the battery is tested.

Embodiment 2

[0029] A new negative lead paste for lead-acid battery, the negative lead paste is prepared from the following raw materials: 84-86% lead powder, 6-8% sulfuric acid, 0.05-0.15% composite carbon fiber, 0.5% p-nitrogen anthracene blue, 0.05% graphite ~ 0.10%, humic acid 0.3 ~ 0.5%, barium stearate 1%, the balance is deionized water; the sum of the weight percentages of each raw material is 100%.

[0030] 120-124 g of the negative electrode paste is coated on a Pb—Ca alloy grid to prepare a negative electrode sheet, and the prepared negative electrode sheet is cured in a curing chamber. The cured negative plate group and the positive plate prepared by the conventional method are assembled into a battery, and the density of the electrolyte is 1.26g / cm 3 The sulfuric acid is converted, and after the conversion is completed, the performance of the battery is tested.

Embodiment 3

[0032] A new negative lead paste for lead-acid battery, the negative lead paste is prepared from the following raw materials: 84-86% lead powder, 6-8% sulfuric acid, 0.05-0.15% composite carbon fiber, 0.7% p-nitrogen anthracene blue, 0.05% graphite ~ 0.10%, humic acid 0.3 ~ 0.5%, barium stearate 2%, the balance is deionized water; the sum of the weight percentages of each raw material is 100%.

[0033] 120-124 g of the negative electrode paste is coated on a Pb—Ca alloy grid to prepare a negative electrode sheet, and the prepared negative electrode sheet is cured in a curing chamber. The cured negative plate group and the positive plate prepared by the conventional method are assembled into a battery, and the density of the electrolyte is 1.26g / cm 3 The sulfuric acid is converted, and after the conversion is completed, the performance of the battery is tested.

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Abstract

The invention discloses a novel lead-acid storage battery negative electrode lead paste and a preparation method thereof. The lead paste is prepared from 84-86% of lead powder, 6-8% of sulfuric acid,0.05-0.15% of conductive fiber, 0.1-1.0% of induline base N, 0.05-0.10% of graphite, 0.3-0.5% of humic acid, 0.5-3% of barium stearate and the balance of deionized water. The negative electrode lead paste prepared by the preparation method provided by the invention significantly reduces phenomena of the difficulty in passivation of a negative electrode, falling, softening, and shedding too early,and also significantly reduces a phenomenon of non-uniform distribution of active material particles on a negative electrode plate; the initial capacity and the battery capacity of a battery preparedfrom the negative electrode lead paste are improved to a certain extent, so that the cycle life of the battery is prolonged.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry. In particular, it relates to a novel lead-acid storage battery negative electrode paste and a preparation method thereof. technical background [0002] Lead-acid batteries, which have a long history of development, are widely used in various fields due to their advantages such as safe and reliable performance, mature technology, low price, high recovery rate, and large discharge current density. [0003] With the development of science and technology, the performance of lead-acid batteries has been rapidly improved, and people's requirements for the performance of lead-acid batteries have also increased, especially in terms of initial capacity and low-temperature capacity. The initial capacity and low temperature capacity are closely related to the negative electrode of the lead-acid battery. In the charge and discharge reaction of lead-acid batteries, especially under low temperature ...

Claims

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Application Information

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IPC IPC(8): H01M4/57H01M10/06
CPCH01M4/57H01M10/06Y02E60/10
Inventor 李慧萍白丹丹李松林张雷
Owner HENAN CHAOWEI POWER SUPPLY
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