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Preparation method of carbon-lead battery anode

A carbon-lead battery and negative electrode technology, which is applied in the field of carbon-lead battery negative electrode preparation, can solve the problems of accelerating the hydrogen evolution of the negative plate, difficult to mix uniformly, and the carbon materials cannot give full play to their advantages, and achieves the advantages of reducing floating carbon and prolonging the cycle life. Effect

Inactive Publication Date: 2019-12-20
ZHEJIANG MEINENG ELECTRIC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Although the addition of carbon materials to the negative plate can significantly inhibit the sulfation of the negative plate of the lead-acid battery during the HRPSoC cycle, it also accelerates the hydrogen evolution on the negative plate, and the specific gravity between the carbon material and the negative active material is inconsistent. The problem will make it difficult to mix the two evenly during the electrode preparation process, resulting in the phenomenon of floating carbon, so that the carbon material cannot give full play to its advantages

Method used

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  • Preparation method of carbon-lead battery anode
  • Preparation method of carbon-lead battery anode

Examples

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Embodiment 1

[0032] Pretreatment: Disperse 1 g of GO in 50 mL of 75% absolute ethanol and sonicate for 10 min, pour this mixture into 150 mL of 0.1 mol / L Pb(NO 3 ) 2 The solution was magnetically stirred for 3 hours; then 12.5 mL of ammonia solution with a concentration of 15 mol / L was added dropwise to the above solution, while ultrasonication was performed for 10 minutes, the above solution was filtered and vacuum-dried at 80°C for 12 hours to obtain samples.

[0033] Pyrolysis: The samples prepared above were further heated in N 2 Heat to 500°C at a rate of 10°C per minute in the air and keep it warm for 2 hours to obtain the pyrolysis product.

[0034] Pickling: Add 1.5g of pyrolysis product to 300ml of HCl solution with a concentration of 5mol / L, ultrasonically treat for 15min at 25°C, stir magnetically for 20min, let it rest for 40min, absorb the supernatant with a dropper, and repeat the above process 3 times; then the solution was filtered and washed with distilled water until Ph...

Embodiment 2

[0036] The preparation process of negative electrode paste is as follows: first, 0.2g acetylene black, 0.1g lignin, 0.5g polypropylene fiber, 0.4gBaSO 4 , 0.7g of humic acid and 1g of PbO / GO composite were ground evenly in an agate mortar, and then 97g of lead powder with an oxidation degree of 75% was added to the above mixture and mixed well; secondly, the H 2 Add O into the mortar and stir well, then add 1.25g / cm 3 H 2 SO 4, add it into the mortar evenly and slowly three times and keep stirring, and finally add an appropriate amount of water to adjust the apparent density of the lead paste to about 4.2g / cm 3 . Apply 1.0g of the above-prepared lead paste on an area of ​​1.5*0.5cm 2 On the negative electrode active material, the thickness is 1mm; then the plate after manual paste is placed in the H 2 SO 4 (1.25g / cm 3 ) solution for 1-3S. Put the prepared plate into a constant temperature and humidity box for curing treatment. The curing temperature is 55°C, the curing...

Embodiment 3

[0038] The preparation process of negative electrode paste is as follows: first, 0.2g acetylene black, 0.1g sodium lignosulfonate, 0.5g polyester fiber, 0.4gBaSO 4 , 0.7g of humic acid and 1g of PbO / GO composite were ground evenly in an agate mortar, and then 97g of lead powder with an oxidation degree of 75% was added to the above mixture and mixed well; secondly, the H 2 Add O into the mortar and stir well, then add 1.25g / cm 3 H 2 SO 4 , add it into the mortar evenly and slowly three times and keep stirring, and finally add an appropriate amount of water to adjust the apparent density of the lead paste to about 4.2g / cm 3 . Apply 1.0g of the above-prepared lead paste on an area of ​​1.5*0.5cm 2 On the negative electrode active material, the thickness is 1mm; then the plate after manual paste is placed in the H 2 SO 4 (1.25g / cm 3 ) solution for 1-3S. Put the prepared plate into a constant temperature and humidity box for curing treatment. The curing temperature is 45°C...

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Abstract

The invention discloses a preparation method of a carbon-lead battery anode. The method comprises the following steps of: 1, S1, mixing and stirring GO dispersed by ethanol and a Pb (NO3) 2 solution;adding an ammonia water solution, gradually performing heating to a temperature of 500 DEG C in an inert gas atmosphere for high-temperature pyrolysis, carrying out heat preservation for 2 hours, andwashing with water and drying after 5MHCl ultrasonic pickling to obtain a PbO / GO compound; S2, grounding and mixing acetylene black, a lignin additive, short fibers, barium sulfate, humic acid and thePbO / GO compound with lead powder; and S3, coating the Pb-Sn-Ca grid with the lead paste, soaking the Pb-Sn-Ca grid in an H2SO4 solution for 1-3 seconds, and then carrying out constant-temperature andconstant-humidity curing and drying to obtain a raw anode plate, so that hydrogen evolution of a carbon material is inhibited, and the HRPSoC cycle life of the battery is prolonged.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method for preparing a negative electrode of a carbon-lead battery. Background technique [0002] In order to cope with the excessive consumption of the earth's oil resources and protect the environment, the development of new energy vehicles and clean energy has become a research hotspot around the world. In new energy vehicles and energy storage, power batteries and energy storage batteries have become the bottleneck of their development. The working mode of lead-acid batteries in electric and hybrid vehicles is continuous high-rate partial charge cycle, which will cause negative active materials to appear. Irreversible sulfation, thereby reducing the cycle life of the battery In recent years, as the lead-carbon battery overcomes the shortcomings of the traditional lead-acid battery in hybrid electric vehicles, electric vehicles and energy storage applications, it retains t...

Claims

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Application Information

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IPC IPC(8): H01M4/04H01M4/20H01M4/21
CPCH01M4/0404H01M4/0471H01M4/20H01M4/21Y02E60/10
Inventor 谭晓波杨辉平马荣
Owner ZHEJIANG MEINENG ELECTRIC
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