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Storage battery plate additive and preparation method thereof

A storage battery and additive technology, applied to battery electrodes, circuits, electrical components, etc., can solve problems such as unresolved sulfation problems, reduced battery charge acceptance, and reduced utilization of active materials, so as to maintain the adhesion area and charge The effect of smooth transmission, increasing specific surface area and porosity

Inactive Publication Date: 2017-07-21
明光市裕阳新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the initial stage of discharge, the lead sulfate crystals generated are small. When charging, under the action of the electric field, the fine lead sulfate crystals are easily dissolved in the sulfuric acid electrolyte and reduced to lead as the active substance; as the number of charge and discharge increases, the fine lead sulfate crystals Lead sulfate crystals are easy to agglomerate into thick and hard crystals, and the coarse lead sulfate crystals are difficult to be reduced to lead during the charging process, resulting in intensified irreversible sulfation, reducing the utilization rate of active materials, and reducing the charge acceptance of the battery. eventually kills the battery
[0004] For the failure mechanism of the battery, after so many years of technological development, it is generally believed that adding additives to the active materials of the positive and negative plates of the battery is an effective solution to the problem. Additives are an important part of the lead-acid battery plate. The types of additives for the negative plate are more complicated. The common additives used for the negative plate of the lead-acid battery include barium sulfate, humic acid, lignosulfonate, etc. These additives are often added to the negative plate together. Battery performance has improved, but the deadliest problem of sulfation remains unresolved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment relates to a battery plate additive, including the following raw materials in parts by weight: 20 parts of modified graphene, 18 parts of tetrabasic lead sulfate, 23 parts of fumed nano-silica, 2,6-di-tert-butyl -5 parts of 4-hydroxytoluene, 3 parts of 2-mercapto-benzimidazole, and 10 parts of pure water.

[0023] Wherein, the modified graphene is prepared by the following method: (1) mixing graphite oxide and sodium dodecylsulfonate, then adding deionized water, stirring evenly, placing it in a numerically controlled ultrasonic machine for 2.5 hours to obtain Graphene oxide aqueous solution; (2) Put the graphene oxide aqueous solution in a reaction kettle at 190°C to keep warm for 15 hours, and then dry it in a low temperature environment to obtain the modified graphene.

[0024] Wherein, the concentration of the sodium dodecylsulfonate is 5%.

[0025] Wherein, the specific surface area of ​​the gas-phase method nano-silica is 500m 2 / g, the particle ...

Embodiment 2

[0032] This embodiment relates to a battery plate additive, including the following raw materials in parts by weight: 40 parts of modified graphene, 27 parts of tetrabasic lead sulfate, 42 parts of fumed nano-silica, 2,6-di-tert-butyl -12 parts of 4-hydroxytoluene, 8 parts of 2-mercapto-benzimidazole, and 20 parts of pure water.

[0033] Wherein, the modified graphene is prepared by the following method: (1) mixing graphite oxide and sodium dodecylsulfonate, then adding deionized water, stirring evenly, placing it in a numerically controlled ultrasonic machine for 2.5 hours to obtain Graphene oxide aqueous solution; (2) Put the graphene oxide aqueous solution in a reaction kettle at 200°C to keep warm for 17 hours, and then place it in a low-temperature environment to dry, so as to obtain the modified graphene.

[0034] Wherein, the concentration of the sodium dodecylsulfonate is 8%.

[0035] Wherein, the specific surface area of ​​the gas-phase method nano-silica is 500m 2 ...

Embodiment 3

[0042] This embodiment relates to a battery plate additive, including the following raw materials in parts by weight: 25 parts of modified graphene, 21 parts of tetrabasic lead sulfate, 35 parts of fumed nano-silica, 2,6-di-tert-butyl -8 parts of 4-hydroxytoluene, 4 parts of 2-mercapto-benzimidazole, and 13 parts of pure water.

[0043]Wherein, the modified graphene is prepared by the following method: (1) mixing graphite oxide and sodium dodecylsulfonate, then adding deionized water, stirring evenly, placing it in a numerically controlled ultrasonic machine for 2.5 hours to obtain Graphene oxide aqueous solution; (2) Put the graphene oxide aqueous solution in a reaction kettle at 195°C to keep warm for 16 hours, and then place it in a low-temperature environment to dry, so as to obtain the modified graphene.

[0044] Wherein, the concentration of the sodium dodecylsulfonate is 6%.

[0045] Wherein, the specific surface area of ​​the gas-phase method nano-silica is 500m 2 / g...

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Abstract

The invention discloses a storage battery plate additive. The storage battery plate additive is prepared from, by weight, 20-40 parts of modified graphene, 18-27 parts of tetrabasic lead sulfate, 23-42 parts of vapor phase method nano-silica, 5-12 parts of 2,6-di-tert-4-butylated hydroxytoluene, 3-8 parts of 2-sulfydryl-benzimidazole and 10-20 parts of purified water. The storage battery plate additive can increase the specific area and the porosity of a lead-acid storage battery plate, enhance the strength of the plate, improve the conductivity of the plate, increase the surface utilization rate of active materials, effectively reduce the lead sulfate particle size, lower polarization, improve the lead sulfate-to-cathode lead conversion efficiency, and achieve the purposes of improving the charging receptivity and prolonging the service life of the storage battery.

Description

technical field [0001] The invention belongs to the technical field of storage batteries, and in particular relates to a storage battery pole plate additive and a preparation method thereof. Background technique [0002] At present, lead-acid batteries have become the largest and most widely used battery varieties in the world because of their low price, easy availability of raw materials, reliable performance, easy recycling, and high-current discharge. Electric vehicles and other fields are inseparable from batteries. During the use of lead-acid batteries, as the number of charge and discharge increases, the discharge capacity will continue to decrease, which will eventually lead to battery failure. The reasons for the failure can be summarized as follows: ①Corrosion and deformation of the positive plate; ②The softening and falling off of the positive active material ; ③ irreversible sulfation; ④ premature loss of capacity; ⑤ thermal runaway. The most common cause of bat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62
CPCH01M4/62H01M4/625H01M4/628Y02E60/10
Inventor 辛松
Owner 明光市裕阳新材料有限公司
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