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Anode lead plaster of lead-acid accumulator

A technology of lead-acid battery and positive electrode paste, which is applied in the direction of battery electrodes, circuits, electrical components, etc., which can solve the problems of battery capacity drop and poor formation effect, so as to prolong the service life and overcome the softening effect of the plate

Active Publication Date: 2014-12-24
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the internal formation battery, after adding phosphoric acid to the electrolyte, the phosphate ion will lead to poor formation effect, resulting in a decrease in battery capacity

Method used

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  • Anode lead plaster of lead-acid accumulator
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Examples

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Effect test

Embodiment 1

[0020] A positive lead paste for lead-acid battery, the mass fraction of each component of the positive lead paste is: 67.9% of lead powder, 10% of red lead, 6% of sulfuric acid, 0.1% of short fiber, 15% of deionized water, and 0.5% of calcium phosphate and zinc phosphate 0.5%.

Embodiment 2-9

[0022] A kind of lead-acid accumulator positive electrode lead paste, the formula of this positive electrode lead paste is shown in Table 1.

[0023] Table 1

[0024]

[0025] The above components and paste were made into plates, and the experiments were carried out after assembling the battery. The specific experimental conditions are shown in Table 2 (take 12V12Ah battery as an example), and the life curve is as follows figure 1 and figure 2 shown. according to figure 1 , figure 2 From the data in Table 2, it can be seen that the initial capacity, charge acceptance, and low-temperature performance of the battery are not affected, but the cycle life is significantly improved.

[0026] Table 2

[0027]

[0028] The blank formula (mass fraction): 10% red lead, 6% sulfuric acid, 0.1% short fiber, 15% deionized water, and the balance is lead powder.

[0029] The lead-acid battery cathode lead paste and the paste prepared in each embodiment were made into pole plate...

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Abstract

The invention relates to an anode lead plaster of a lead-acid accumulator. The anode lead plaster comprises the following components in percentage by weight: 1-25% of red lead, 3-15% of sulfuric acid, 5-20% of water, 0.05-2% of short fibers, 0.01-10% of phosphate and the balance of lead powder. According to the anode lead plaster, by adding the slightly soluble phosphate into the formula, phosphate radical are slowly released during usage of the cell; not only are the forming process and early-stage performance of the cell not influenced, and also the problem that an electrode plate is softened at the later usage stage of the cell is overcome; the phosphate can be selected from common phosphate with stable property, such as calcium phosphate and zinc phosphate.

Description

technical field [0001] The invention relates to a positive electrode paste of a lead-acid storage battery, in particular to a positive electrode paste of a lead-acid storage battery. Background technique [0002] A major limiting factor in the cycle life of current lead-acid batteries is the softening of the positive electrode. Especially for internalized batteries, more than 80% of the batteries that have reached the end of their life in cyclic use are caused by the softening of the positive electrode. Therefore, overcoming softening is the key to improving the life of lead-acid batteries. Adding phosphoric acid to the battery is an effective means to overcome the softening of the positive plate of the battery. Phosphoric acid and phosphate are applied in externally formed industrial batteries, and the effect is remarkable. However, for the internal formation battery, after adding phosphoric acid to the electrolyte, the phosphate ion will lead to poor formation effect, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/57H01M4/62
CPCH01M4/57H01M4/62Y02E60/10
Inventor 马永泉刘孝伟
Owner CHAOWEI POWER CO LTD
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