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Anode material of lead accumulator and preparation method thereof

A cathode material, lead battery technology, applied in lead-acid battery electrodes, battery electrodes, circuits, etc., can solve problems such as loss of function, and achieve the effects of improving utilization, reducing the influence of impurities, and improving the efficiency of formation

Inactive Publication Date: 2008-12-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these additions showed good performance at the beginning of the battery cycle, due to the harsh application environment inside the lead-acid battery, they quickly lost their effect as the cycle progressed.

Method used

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  • Anode material of lead accumulator and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Mix 50g of concentrated sulfuric acid and 25g of concentrated nitric acid, then add 0.1g of sodium dodecylbenzenesulfonate and 0.1g of carbon nanotubes, stir and mix, then sonicate for 1 hour, add deionized water to dilute and suction filter until neutral, bake at 60°C 8h, to obtain mixed acid ultrasonic treatment of carbon nanotubes;

[0025] 2) Combine 0.1g polyacrylonitrile staple fiber with 30g PbO 2 Powder and 19.9g lead powder are mixed evenly;

[0026] 3) Put the mixture of mixed acid ultrasonically treated carbon nanotubes and step 2) into an agate ball mill jar at a mass ratio of 1:99, add 3ml of absolute ethanol dropwise therein, and ball mill at a speed of 200r / min for 2 hours to obtain an apparent density of 3.8 g / cm 3 positive electrode materials for lead-acid batteries. The positive electrode material of the lead storage battery contains 1% of carbon nanotubes, 0.5% of short polyacrylonitrile fibers, and Pb0 2 60%, the rest is lead powder.

[0027]...

Embodiment 2

[0029] 1) Mix 40g of concentrated sulfuric acid and 10g of concentrated nitric acid, then add 0.2g of sodium dodecylbenzenesulfonate and 0.2g of carbon nanotubes, stir and mix, then sonicate for 1 hour, add deionized water to dilute and filter until neutral, bake at 80°C 10h, to obtain mixed acid ultrasonic treatment of carbon nanotubes;

[0030] 2) Combine 0.5g polyacrylonitrile staple fiber with 35g PbO 2 Powder and 14.5g lead powder are mixed evenly;

[0031] 3) Put the mixture of mixed acid ultrasonically treated carbon nanotubes and step 2) into an agate ball mill jar at a mass ratio of 0.5:99.5, add 5ml of absolute ethanol dropwise therein, and ball mill at a speed of 200r / min for 3 hours to obtain an apparent density of 3.8 g / cm 3 positive electrode materials for lead-acid batteries. The positive electrode material of the lead storage battery contains 0.5% of carbon nanotubes, 1% of short polyacrylonitrile fibers, and Pb0 2 70%, the rest is lead powder.

[0032] A ...

Embodiment 3

[0034] 1) Mix 25g of concentrated sulfuric acid and 25g of concentrated nitric acid, then add 0.1g of polyvinyl alcohol and 0.1g of carbon nanotubes, stir and mix, then sonicate for 1h, add deionized water to dilute and filter until neutral, bake at 100°C for 12h, and obtain mixed acid sonication carbon nanotubes;

[0035] 2) Combine 1.0g polyacrylonitrile short fiber with 45g PbO 2 Powder and 4g lead powder are mixed evenly;

[0036] 3) Put the mixture of mixed acid ultrasonically treated carbon nanotubes and step 2) into an agate ball mill jar at a mass ratio of 2:98, add 3ml of absolute ethanol dropwise, and ball mill at a speed of 400r / min for 1h to obtain an apparent density of 4.3 g / cm 3 positive electrode materials for lead-acid batteries. Containing 2% of carbon nanotubes, 2% of short polyacrylonitrile fibers, and Pb0 in the positive electrode material of the lead storage battery 2 90%, the rest is lead powder.

[0037] A test electrode was prepared and tested usi...

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Abstract

The invention discloses lead storage battery positive pole material and a production method thereof, ingredients of the material and percent contents of the ingredients by weight are as follows: 0.2-2% of carbon nanometer tube, 0.2-2% of polyacrylonitrile short fiber, 60-90% of PbO2, the rest is lead powder. The carbon nanometer tube experiencing mixed-acid ultrasonic treatment is used as an additive for the lead storage battery positive pole, which can not only resist corrosion from the execrable electrochemical environment in the lead storage battery, increase specific surface area of the positive pole active substances, promote charging and discharging abilities of an electrode, improve the circulation performance, boost chemical efficiency, but advance the utilization rate of the active substances and discharging capacity of the lead storage battery. In case of 0.5c-10c of current, the utilization rate of the active substances in simulation batteries can be enhanced by 8%-15%. The invention has simple process and low cost as well as adapt to large-scale production and application.

Description

technical field [0001] The invention relates to a positive electrode material of a lead storage battery and a preparation method thereof. Background technique [0002] At present, the domestic and foreign academic research circles of lead-acid batteries agree that the main problems of lead-acid batteries are: low utilization rate of active materials (30-35% for positive pole and 40-45% for negative pole), low specific energy of battery (generally 30-35wh / kg). In recent years, in order to reduce the resistance of the positive electrode and improve the utilization rate of the active material of the positive electrode, amorphous carbon and graphite have been used as additives. Although these additions showed good performance at the beginning of the battery cycle, due to the harsh application environment inside the lead-acid battery, they quickly lost their effect as the cycle progressed. At present, there are many studies on the positive additives of lead storage batteries: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/57H01M4/62H01M4/16
CPCY02E60/10
Inventor 谭俊军张孝彬王杏花刘芙
Owner ZHEJIANG UNIV
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