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Negative lead paste for lead-carbon battery

A negative lead paste, lead-carbon battery technology, applied in battery electrodes, lead-acid batteries, lead-acid battery construction and other directions, can solve the problems of decreased hydrogen suppression effect, uneven size, poor consistency, etc., and achieve the increase of hydrogen evolution resistance. Utilization rate, the effect of reducing hydrogen evolution

Active Publication Date: 2016-04-13
CHINA ELECTRIC POWER RES INST +3
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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, so the consistency of the Pb-doped modification effect is 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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  • Negative lead paste for lead-carbon battery
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Preparation of activated carbon-gallium oxide-indium oxide composites: physical vapor deposition method in activated carbon Gallium oxide and indium oxide are deposited on the surface and pores, where activated carbon The specific surface area is 1800~2000m 2 / g, particle size D50 is 10-20m, activated carbon : gallium oxide: indium oxide weight ratio 24:1:1.

[0058] Preparation of lead carbon negative lead paste: the solid raw materials of the lead paste include 97 parts of lead powder, 2 parts of activated carbon-gallium oxide-indium oxide composite material, 0.2 part of carbon black, 0.5 part of barium sulfate, and 0.1 part of lignin sulfonate Sodium acid, 0.1 part of humic acid and 0.1 part of short fiber, the apparent density of the lead paste is 4.0-4.4g / cm 3 .

[0059] Two sets of reference negative electrode pastes were prepared.

[0060] The solid raw materials of the first group of negative electrode pastes include 97 parts of lead powder, 2 parts of g...

Embodiment 2

[0072] Preparation of activated carbon-zinc oxide composite material: Deposit zinc oxide on the surface of graphene by hydrothermal method, wherein the number of carbon atomic layers of graphene is within 10 layers, and the specific surface area is 300-400m 2 / g, the weight ratio of graphene: zinc oxide is 23:2.

[0073] Preparation of lead carbon negative electrode paste: the solid raw materials of the paste include 99 parts of lead powder, 0.5 parts of graphene-zinc oxide composite material, 0.25 parts of carbon black, 1 part of barium sulfate, and 0.01 part of sodium lignosulfonate , 0.2 parts of humic acid and 0.06 parts of short fibers, the apparent density of the lead paste is 4.0-4.4g / cm 3 .

[0074] Apply the above two kinds of lead pastes on the grid to make the negative plate, and the positive plate is assembled, filled with acid and activated according to the normal production process to produce 2V15Ah valve-regulated sealed lead-acid battery.

[0075] Two sets of...

Embodiment 3

[0088] Preparation of carbon black-graphite-bismuth oxide composite material: use a chemical water bath method to coat a thin layer of bismuth oxide on the surface of carbon black and graphite, and the specific surface area of ​​carbon black is 1000-1200m 2 / g, particle size D 50 5~10m, the specific surface area of ​​graphite is 8~10m 2 / g, particle size D 50 The thickness of bismuth oxide thin layer is about 100nm. The mass ratio of carbon black, graphite and bismuth oxide in the composite material is 10:9:1.

[0089] Preparation of lead carbon negative lead paste: the solid raw materials of the lead paste include 98 parts of lead powder, 5 parts of carbon black-graphite-bismuth oxide composite material, 0.2 part of barium sulfate, 0.05 part of sodium lignosulfonate, 0.05 part of Humic acid and 0.09 parts of short fibers, the apparent density of the lead paste is 4.0-4.4g / cm 3 .

[0090] Apply the above two kinds of lead pastes on the grid to make the negative plate, and t...

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Abstract

The invention provides a negative lead paste for a lead-carbon battery. The negative lead paste is prepared from the following components in parts by weight: 1-99 parts of lead powder, 0.1-90 parts of a carbon-oxide composite material, 0-0.5 part of carbon black, 0.1-2 parts of barium sulfate, 0.05-0.1 part of a short fiber and 0.01-3.2 parts of an organic swelling agent. Oxides on the surface and in holes of the carbon material of the lead paste are tightly adsorbed to the periphery of the carbon material in an ionic form, and are recombined on the surface and in the holes of the carbon material in curing and drying processes; and a tiny oxide film is evenly attached to the active surface and the holes of the carbon material by 'dissolving and recombination', so that the bonding degree of the carbon material and the oxides is greatly improved; the conduction characteristics and the capacitance characteristics of the carbon material are put into a fully play; and hydrogen evolution on the surface of the carbon material is limited.

Description

technical field [0001] The invention relates to a lead-carbon battery electrode material, in particular to a lead-carbon battery negative lead paste. 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 lead to 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 prolong the service life by 3-5 times. Power density increased by 20%-50%. [0003] At present, capacitive carbon materials such as carbon black and activated carbon with high specific surface area a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/57H01M4/62H01M10/12
CPCH01M4/57H01M4/625H01M4/628H01M10/121Y02E60/10Y02P70/50
Inventor 刘皓胡晨相佳媛杨凯高飞赵录兴李大贺王丽娜马晓明丁平陈建吴贤章
Owner CHINA ELECTRIC POWER RES INST
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