Negative plate of lead-carbon battery and preparation method

A technology of lead-carbon battery and negative plate, which is applied in the direction of lead-acid battery electrodes, battery electrodes, circuits, etc., which can solve the problems of large specific surface area of ​​activated carbon materials and water loss of batteries, and achieve good crystallinity, prolong service life, and easy The effect of electron transport

Active Publication Date: 2012-02-01
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual application of electric vehicles, the battery is required to be a maintenance-free lean liquid valve-regulated battery. Under actual applicati

Method used

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  • Negative plate of lead-carbon battery and preparation method
  • Negative plate of lead-carbon battery and preparation method
  • Negative plate of lead-carbon battery and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Preparation of negative plate with 0% addition of carbon nanotubes

[0029] Take 3kg of lead powder, 2.1g of polyester fiber, 6g of sodium lignosulfonate, 24g of barium sulfate, and 15g of conductive carbon black. Stir and mix the above five materials for 10 minutes, then slowly add 15℃ =1.350±0.004g / cm 3 dilute sulfuric acid, control the flow rate for 10-15 minutes, then continue to stir for 5 minutes, add an appropriate amount of water to adjust the apparent density of the lead paste to 4.25g / cm 3 , hand-painted panels.

Embodiment 2

[0030] Example 2: Preparation of negative plate with multi-walled carbon nanotubes added in an amount of 0.25%

[0031] Take 7.5g of multi-walled carbon nanotubes and disperse them into 400g of water. The ultrasonic power is controlled at 500-700W, with 4s and 4s intervals, and the total ultrasonic time is 1h. The carbon nanotubes used have a diameter of 30-50nm, a length of 5-20μm, and a specific surface area of ​​300m 2 / g of hydroxylated multi-walled carbon nanotubes TNMH7.

[0032]Get 3kg of lead powder, 2.1g of polyester fiber, 6g of sodium lignosulfonate, 24g of barium sulfate, and 15g of conductive carbon black. Stir and mix the above materials for 10 minutes, add the mixture of dispersed carbon nanotubes and water, continue stirring for 10 minutes, and then slowly Add slowly and the specific gravity is d 15℃ =1.350±0.004g / cm 3 Add dilute sulfuric acid, control the flow rate for 10-15 minutes, continue stirring for 5 minutes, add an appropriate amount of water, and a...

Embodiment 5

[0053] Example 5: Preparation of negative plate with 1% addition of multi-walled carbon nanotubes

[0054] Take 100g of carbon nanotubes and disperse them into 1400g of water. The ultrasonic power is controlled at 500-700W, the ultrasonic wave is 4s and the interval is 4s, and the total ultrasonic time is 1.5h. The carbon nanotubes used are multi-walled tubes MWCNTs.

[0055] Get 10kg of lead powder, 7g of acrylic fibers, 28g of a mixture of sodium lignosulfonate and humic acid with a mass ratio of 9:1, 80g of barium sulfate, and 50g of colloidal graphite, stir and mix for 10min, add the mixture of dispersed carbon nanotubes and water, Continue to stir for 10min, then slowly add the specific gravity d 15℃ =1.350±0.004g / cm 3 Add dilute sulfuric acid, control the flow rate for 10-15 minutes, then continue to stir for 5 minutes, add an appropriate amount of water to adjust the apparent density of the lead paste to 4.05g / cm 3 , hand-painted panels.

[0056] Performance Testing...

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Abstract

The invention relates to a negative plate of a lead-carbon battery and a preparation method. An anode material in the negative plate of the lead-carbon battery comprises lead powder, fibers which are 0.05 to 0.2 percent based on the mass of the lead powder, organic additives which are 0.2 to 0.5 percent based on the mass of the lead powder, barium sulfate which is 0. 5 to 1.2 percent based on the mass of the lead powder, carbon nano tubes which are 0.2 to 10 percent based on the mass of the lead powder and other nanoscale or micron-sized conductive carbon materials which are 0.2 to 1 percent based on the mass of the lead powder. The preparation method comprises the following steps of: dispersing the carbon nano tubes, mixing paste and coating lead plaster on a negative grid. The negative plate of the lead-carbon battery effectively improves the discharging capacity of the battery and prolongs the service life of the battery in an under-charging state, and remarkably improves the high-current charging and discharging performance of the battery in a full-charging state.

Description

technical field [0001] The invention relates to a lead-carbon battery negative plate and a preparation method thereof, belonging to the technical field of lead-carbon batteries. Background technique [0002] With the rapid development of electric vehicles, electric bicycles and other electric vehicles, lead-acid batteries are favored by the market due to their mature technology, stable performance, high safety and low price. At present, the share of lead-acid batteries in the electric bicycle market has reached above 95. Due to the characteristics of the lead-acid battery itself, the charging current should not be too large. Generally, the charging current should be 10-30% of the rated capacity, and each charge must be fully charged. Long time charging. However, in practical applications, limited by this condition, the battery will often operate in an undercharged state. The use of the under-charged state will accelerate the process of sulfation of the negative electrode,...

Claims

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Application Information

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IPC IPC(8): H01M4/14H01M4/62H01M4/20
CPCY02E60/126Y02E60/10
Inventor 范娜李现红孔德龙马厚义钱逸泰
Owner SHANDONG UNIV
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