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Lead carbon mixed negative lead paste and preparation method thereof

A negative electrode paste and lead carbon technology, applied in the direction of lead-acid battery electrodes, battery electrodes, electrical components, etc., can solve the problems of decreased binding force between lead paste and plate, affecting capacitance characteristics, and reducing active surface, etc., to achieve excellent battery life. Effects of chemical properties, improved service life, and high capacitance characteristics

Active Publication Date: 2013-01-16
ZHEJIANG NARADA POWER SOURCE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high surface activity of carbon materials with high specific surface area, agglomeration is very easy to occur. After being mixed with lead paste, the active surface is greatly reduced, which affects the performance of its capacitance characteristics.
In addition, due to the huge difference in surface properties between lead powder and carbon materials, it is difficult for carbon materials to mix evenly with lead powder, which eventually leads to a decrease in the bonding force between the lead paste and the plate and reduces the strength of the plate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh the raw materials required for the negative electrode paste, and weigh them in parts by weight: 100 parts of lead powder; 1 part of vapor-phase grown carbon fiber; 0.5 part of carbon black; 2 parts of activated carbon; 0.5 part of hydrogen evolution inhibitor; 0.5 parts of sodium sulfonate; 0.5 parts of humic acid; 0.1 parts of short fiber; 15 parts of water; 8 parts of sulfuric acid.

[0028] Among the above raw materials, the gas-phase grown carbon fiber has a diameter of 100nm, a length of 20m, and a specific surface area of ​​10-15m 2 / g.

[0029] Among the above raw materials, the specific surface area of ​​high specific surface carbon black is 1200-1400m 2 / g, the oil absorption value is 180.

[0030] Among the above raw materials, the specific surface area of ​​activated carbon is 2000-2200m 2 / g, the particle size is 40-60m, and the specific capacitance in 1.304g / ml sulfuric acid is 200F / g.

[0031] Among the above raw materials, the hydrogen evolution...

Embodiment 2

[0038] Weigh the raw materials required for the negative electrode paste, and weigh them in parts by weight: 100 parts of lead powder; 0.8 parts of vapor-phase grown carbon fiber; 0.3 parts of high specific surface carbon black; 1 part of activated carbon; 0.2 parts of hydrogen evolution inhibitor; 1 part of barium sulfate 0.4 parts of sodium lignosulfonate; 0.5 parts of humic acid; 0.1 parts of short fiber; 15 parts of water; 8 parts of sulfuric acid.

[0039] Among the above raw materials, the gas-phase grown carbon fiber has a diameter of 150nm, a length of 10m, and a specific surface area of ​​10-15m 2 / g.

[0040] Among the above raw materials, the specific surface area of ​​high specific surface carbon black is 1200-1400m 2 / g, the oil absorption value is 180.

[0041] Among the above raw materials, the specific surface area of ​​activated carbon is 2200-2400m 2 / g, the particle size is 60-80m, and the specific capacitance in 1.304g / ml sulfuric acid is 250F / g.

[004...

Embodiment 3

[0049] Weigh the raw materials required for the negative electrode paste, and weigh them in parts by weight: 100 parts of lead powder; 1 part of vapor-phase grown carbon fiber; 0.5 part of high specific surface carbon black; 1 part of activated carbon; 0.3 parts of hydrogen evolution inhibitor; 1.2 parts of barium sulfate 0.4 parts of sodium lignosulfonate; 0.8 parts of humic acid; 0.1 parts of short fiber; 15 parts of water; 8 parts of sulfuric acid.

[0050] Among the above raw materials, the gas-phase grown carbon fiber has a diameter of 150nm, a length of 20m, and a specific surface area of ​​10-15m 2 / g.

[0051] Among the above raw materials, the specific surface area of ​​high specific surface carbon black is 1000-1200m 2 / g, the oil absorption value is 180.

[0052] Among the above raw materials, the specific surface area of ​​activated carbon is 2200-2400m 2 / g, the particle size is 60-80m, and the specific capacitance in 1.304g / ml sulfuric acid is 250F / g.

[0053...

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Abstract

The invention discloses a lead carbon mixed negative lead paste and a preparation method thereof. The lead paste is prepared by the following raw materials of, according to weight part proportions, 100 of lead powder, 0.01-2 of gas phase grown carbon fibers, 0.01-2 of high specific surface carbon black, 0.01-5 of activated carbon, 0.01-2 of a hydrogen evolution inhibitor, 0.3-2 of barium sulfate, 0-1.2 of sodium lignosulfonate, 0.5-2 of a humic acid, 0.05-0.1 of short fibers, 5-20 of water and 4-15 of sulfuric acid (the concentration is 1.2-1.40 g / mL). Due to the addition of the gas phase grown carbon fibers, the lead carbon mixed negative lead paste can maintain stable apertures and good active interface; and the high conductive characteristic and high capacitance characteristic of the carbon materials can be fully played. The preparation method of the lead carbon mixed negative lead paste employs a mode of firstly immersing the carbon materials, and then mixing the lead powder and the carbon powder, thereby realizing the better uniform distribution of the carbon. The charging acceptance capability and HRPSoC cycle life of the battery can be significantly improved by using the lead carbon mixed negative lead paste to make a lead carbon super battery.

Description

technical field [0001] The invention belongs to the technical field of lead-acid batteries, and in particular relates to negative lead paste for lead-acid batteries, in particular to a lead-carbon mixed negative lead paste and a preparation method thereof. Background technique [0002] After more than 150 years of development, lead-acid batteries have the advantages of abundant raw materials, good safety and reliability, high cost performance, and recyclability, and occupy an important position in the field of secondary power sources. With the continuous development of new energy storage and power markets, higher requirements are placed on the energy density, power density and cycle life of lead-acid batteries. Especially in hybrid electric vehicles and intermittent new energy storage applications, secondary batteries are required to have a long cycle life under partial charge state high current charge and discharge (HRPSoC) conditions. Under such working conditions of trad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/14H01M4/62H01M4/20
CPCY02E60/126Y02E60/10
Inventor 陈建相佳媛丁平孔德帅吴贤章
Owner ZHEJIANG NARADA POWER SOURCE CO LTD
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