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A kind of negative electrode of lead-carbon battery

A lead-carbon battery and negative electrode technology, applied in lead-acid battery electrodes, battery electrodes, circuits, etc., can solve the problems of uneven size, decreased hydrogen suppression effect, poor consistency, etc., and achieve increased utilization, increased hydrogen evolution resistance, high The effect of conductivity

Active Publication Date: 2021-10-15
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since activated carbon is an irregular high-specific surface material, the pores are in the micron or even nanometer scale, and the size is not uniform, which makes the consistency of Pb-doped modification effect poor.
Pb is only attached to the surface of activated carbon, and may agglomerate in some places through dissolution and recrystallization during the long-term battery cycle, reducing the hydrogen suppression effect

Method used

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  • A kind of negative electrode of lead-carbon battery
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  • A kind of negative electrode of lead-carbon battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A lead-carbon battery negative pole, the negative pole comprises the following components in parts by mass:

[0044]

[0045]

[0046] The heteroatom-doped carbon material is a mixture of carbon black and carbon nanotubes, the mass ratio of carbon black and carbon nanotubes is 3:1, and the mass fraction of heteroatom P in the composite of carbon black and carbon nanotubes is 2.25%. , the metal oxide is indium oxide, and the metal oxide is coated on the surface of the mixture of carbon black and carbon nanotubes. The specific surface area of ​​activated carbon is 1250m 2 / g.

Embodiment 2

[0048] A lead-carbon battery negative pole, the negative pole comprises the following components in parts by mass:

[0049]

[0050] 0.25 parts of barium stearate.

[0051] The heteroatom-doped carbon material is a mixture of expanded graphite and carbon nanofibers, the mass ratio of expanded graphite to carbon nanofibers is 2:1, and the mass percentage of heteroatom N in the composite of expanded graphite and carbon nanofibers is 4.68 %, the metal oxide is a mixture of zinc oxide and bismuth oxide, the mass ratio of zinc oxide and bismuth oxide is 1:1, the metal oxide is coated on the surface of the mixture of expanded graphite and carbon nanofibers, and the specific surface area of ​​activated carbon is 1600m 2 / g.

Embodiment 3

[0053] A lead-carbon battery negative pole, the negative pole comprises the following components in parts by mass:

[0054]

[0055] The heteroatom-doped carbon material is a mixture of acetylene black and carbon nanobelts, the mass ratio of acetylene black and carbon nanobelts is 1:1, and the mass fraction of heteroatoms N and B in the doped composite of acetylene black and carbon nanobelts The metal oxide is a mixture of gallium oxide and germanium oxide, the mass ratio of gallium oxide and germanium oxide is 1:2, the metal oxide is coated on the surface of the mixture of acetylene black and carbon nanobelts, and the specific surface area of ​​the activated carbon is 1460m 2 / g.

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Abstract

The invention provides a lead-carbon battery negative electrode. The negative electrode comprises the following components in parts by mass: 85-115 parts by mass of lead powder; 0.5-15 parts of metal oxide; 0.1-40 parts of carbon material; 9-12 parts of sulfuric acid; 0.2-3 parts of barium sulfate; Sodium lignosulfonate 0-2.5; humic acid 0.1-3; short fiber 0.05-1, water 14-16, barium stearate 0.18-0.25. The negative electrode of the lead-carbon battery applies the composite material of heteroatom-doped zero-dimensional carbon material and one-dimensional carbon nano-conductive agent to the lead paste additive of the negative electrode of the lead-carbon battery, forming a three-dimensional network in the negative electrode, which can reduce the use of carbon materials. Increase the conductivity of the negative electrode of the battery and the utilization rate of the active material, and improve the charge acceptance and specific power of the lead-acid battery.

Description

technical field [0001] The invention relates to a lead-carbon battery electrode material, in particular to a lead-carbon battery negative electrode. Background technique [0002] Lead-acid batteries are rich in raw material resources, low in price, good in safety, high in resource regeneration and recovery rate, and mature in technology. Traditional lead-acid batteries operate under high rate partial state of charge (HRPSoC) conditions (about 30% to 70% SoC), which can easily lead to severe sulfation of the negative plate and battery failure. Lead-carbon super battery is a new composite energy storage device composed of lead-acid battery and super capacitor. Compared with traditional lead-acid battery, it can effectively inhibit the sulfation of the negative plate, and the life can be extended by 3-5 times. Density increased by 20%-50%. [0003] Capacitive carbon materials such as carbon black and activated carbon with high specific surface area are mainly added to the neg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/14H01M4/57H01M4/62
CPCH01M4/14H01M4/57H01M4/624H01M4/625H01M4/628Y02E60/10
Inventor 胡晨杨凯刘皓高飞李大贺王丽娜金翼惠东来小康
Owner CHINA ELECTRIC POWER RES INST
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