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Super Pb-C battery negative plate

A technology of lead-carbon batteries and negative plates, which is applied to the electrodes of lead-acid batteries, and can solve the problems of low specific energy, low active material utilization, and low specific energy of lead-acid batteries

Inactive Publication Date: 2012-10-10
HUNAN FENGRI ELECTRIC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional lead-acid battery has fatal flaws such as low specific energy and short cycle life that restrict the development of lead-acid batteries. Especially as a power battery, when a large current is discharged, due to the serious sulfation of the negative electrode, the lead The life problem of acid battery is more prominent
The low utilization rate of active materials is one of the limiting factors for the low specific energy of lead-acid batteries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Weigh 100g of activated carbon and vacuum impregnate in 1mol / l lead acetate at 50°C for 2h, then vacuum impregnate in 1.28g / ml sulfuric acid solution at 50°C for 5h after suction filtration, at this time, a layer of lead sulfate is deposited in the micropores of the activated carbon The modified layer was washed with water and filtered until the pH value was greater than 6.5, and dried in vacuum at 100°C for 6 hours to complete the activation modification of the activated carbon.

[0012] The preparation process of the negative plate: Weigh 400g of Barton lead powder, 6.4g of ultra-fine barium sulfate, 1.2g of lignin, 0.64g of fiber, 40g of activated and modified activated carbon, mix them evenly and fill them with powder. After filling the powder, put the plate on the Immerse in 1.28g / ml sulfuric acid solution for 2 hours, and cure for 48 hours at 65°C with a relative humidity of 95%. After curing, a negative plate will be formed. Put the negative plate into the electro...

Embodiment 2

[0016] Weigh 100g of activated carbon and vacuum impregnate in 1mol / l lead acetate at 50°C for 2h, then vacuum impregnate in 1.28g / ml sulfuric acid solution at 50°C for 5h after suction filtration, at this time, a layer of lead sulfate is deposited in the micropores of the activated carbon The modified layer was washed with water and filtered until the pH value was greater than 6.5, and dried in vacuum at 100°C for 6 hours to complete the activation modification of the activated carbon.

[0017] The preparation process of the negative plate: Weigh 400g Barton lead powder, 6.4g ultra-fine barium sulfate, 1.2g lignin, 0.64g fiber, 120g activated activated carbon, mix well and fill the powder, after the powder filling is completed, put the plate on the Immerse in 1.28g / ml sulfuric acid solution for 2 hours, and cure for 48 hours at 65°C with a relative humidity of 95%. After curing, a negative plate will be formed. Put the negative plate into the electrolyte and form it. After for...

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Abstract

The invention relates to a battery pole plate, especially relates to a negative plate for a super Pb-C battery. The negative plate for the super Pb-C battery is characterized in that: carbon with high specific surface area which accounts for 10-30 wt% of lead is added in the negative plate lead paste formula, the carbon with high specific surface area is processed by activation. The activation processing method of the carbon with high specific surface area comprises the following steps: conducting vacuum impregnation of the carbon with high specific surface area for 2-4 h in 0.5-1.5 mol / l plumbous acetate at 50 DEG C, conducting pumping filtration, then conducting vacuum impregnation for 5 h in 1.0-1.4 g / ml sulfuric acid solution at 50 DEG C, washing and carrying out suction filtration until the pH value is larger than 6.5, and conducting vacuum drying for 6 h at 100 DEG C. The battery prepared by using the negative plate has the advantages of high utilization rate of active substance and long circulation service life.

Description

technical field [0001] The invention relates to a battery polar plate, in particular to a super lead-carbon battery negative plate. Background technique [0002] The two major challenges of resources and environment make it urgent to move closer to "green transportation". Zero-emission, pollution-free and noise-free power vehicles have broad prospects for development. The core of power vehicles lies in power batteries. Compared with other types of batteries, lead-acid batteries have the advantages of low price, abundant resources, recyclability, mature technology, and high safety. However, the traditional lead-acid battery has fatal flaws such as low specific energy and short cycle life that restrict the development of lead-acid batteries. Especially as a power battery, when a large current is discharged, due to the serious sulfation of the negative electrode, the lead The life problem of acid battery is more prominent. The low utilization of active materials is one of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/14H01M4/16
CPCY02E60/126Y02E60/10
Inventor 黎福根毛先安
Owner HUNAN FENGRI ELECTRIC GROUP
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