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Super lead-acid storage battery containing carbon-coated lead composite material and preparation method of super lead-acid storage battery

A composite material, super lead-acid technology, applied in lead-acid batteries, lead-acid battery construction, battery electrodes, etc., can solve problems such as the inability to reflect the advantages of battery life, aggravate the shedding of negative active materials, and the difficulty of super battery research and development, and achieve improvement. Sulfation phenomenon, obvious price advantage and performance advantage, the effect of improving capacity and high current discharge capacity

Inactive Publication Date: 2013-03-20
ZHUZHOU SMELTER GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although the design idea of ​​super battery provides direction for its structural design and material selection, due to the mismatch of physical and electrochemical properties of lead and carbon materials, the research and development of super battery is very difficult.
If the carbon plate is inserted in parallel with the negative electrode or used together, under the long-term high terminal voltage, there will be a serious problem of hydrogen evolution, which will cause the battery to lose water and make the life advantage unable to be reflected.
The method of mixing activated carbon with the active material of the negative electrode, or permeating the activated carbon layer on the surface of the negative electrode, due to the non-tight combination of lead and carbon, after the battery has been cycled for many times, the carbon material will be precipitated from the active material, causing the active material of the negative electrode to fall off prematurely , and the high content of activated carbon materials also causes a large amount of hydrogen evolution in the negative electrode during the charging process, which further aggravates the shedding of the active material of the negative electrode, and at the same time causes water loss and drying up, resulting in shortened battery life

Method used

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  • Super lead-acid storage battery containing carbon-coated lead composite material and preparation method of super lead-acid storage battery
  • Super lead-acid storage battery containing carbon-coated lead composite material and preparation method of super lead-acid storage battery
  • Super lead-acid storage battery containing carbon-coated lead composite material and preparation method of super lead-acid storage battery

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Embodiment 1

[0031] 70 parts by weight of lead powder, 25 parts by weight of carbon-coated lead composite material, and 5 parts by weight of additives were uniformly dry mixed, and deionized water and sulfuric acid solution with a density of 1.40 g / ml were added to prepare a density of 4.53 g / cm 3The lead paste; then these lead pastes are coated on both sides of the 2.5mm thick grid-shaped negative lead-calcium alloy grid, cured at 55°C and a relative humidity of 97% for 60 hours, and then at 60°C, and dried for 6 hours under the condition of relative humidity of 25%, to obtain a raw negative electrode plate. With the lead powder of 55 weight parts, the Pb of 44.35 weight parts 3 o 4 , 0.5 parts by weight of anisotropic graphite, and fibers of 0.15 parts by weight are dry-mixed in a paste mixer, adding deionized water and a sulfuric acid solution with a density of 1.40g / ml to prepare a density of 4.34g / cm 3 The lead paste, and then these lead pastes are coated on both sides of the 2.65mm...

Embodiment 2

[0034] 80 parts by weight of lead powder, 16 parts by weight of carbon-coated lead composite material, and 4 parts by weight of additives were uniformly dry mixed, and deionized water and sulfuric acid solution with a density of 1.40 g / ml were added to prepare a density of 4.55 g / cm 3 The lead paste; then these lead pastes are coated on both sides of the 2.5mm thick grid-shaped negative lead-calcium alloy grid, cured at 60°C and 95% relative humidity for 56 hours, and then at 70°C, and dried for 8 hours at a relative humidity of 30%, to obtain a raw negative electrode plate. With the lead powder of 65 weight parts, the Pb of 34.5 weight parts 3 o 4 , 0.3 parts by weight of anisotropic graphite, and fibers of 0.2 parts by weight are first dry-mixed in a paste mixer, adding deionized water and a sulfuric acid solution with a density of 1.40g / ml to prepare a density of 4.35g / cm 3 The lead paste, and then these lead pastes are coated on both sides of the grid-shaped positive lea...

Embodiment 3

[0036] 75 parts by weight of lead powder, 20 parts by weight of carbon-coated lead composite material, and 5 parts by weight of additives are uniformly mixed in a dry state in a paste mixer, and then deionized water and a sulfuric acid solution with a density of 1.40g / ml are added to prepare The density is 4.56g / cm 3 The lead paste; then these lead pastes are coated on both sides of the 2.5mm thick grid-shaped negative lead-calcium alloy grid, cured at 70°C and a relative humidity of 99% for 72 hours, and then at 80°C, relative humidity Drying for 16 hours under the condition of 40% humidity to obtain a raw negative electrode plate. The lead powder of 89.85 weight parts, the Pb of 10 weight parts 3 o 4 , 0.1 parts by weight of anisotropic graphite, and fibers of 0.05 parts by weight are dry-mixed in a paste mixer, adding deionized water and a sulfuric acid solution with a density of 1.40g / ml to prepare a density of 4.32g / cm 3 Then, these lead pastes are coated on both sides...

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Abstract

The invention discloses a super lead-acid storage battery containing carbon-coated lead composite material and a preparation method of the super lead-acid storage battery. In terms of weight, a cathode contains 0.5-20 % of carbon-coated lead composite material and an anode uses 10-68.85 % of Pb3O4 as an active material; and through the adoption of the traditional paste mixing, plate coating, curing and drying procedures, a valve-controlled sealed super battery with 1.0-1.4 g / cm<2> sulfuric acid as electrolyte or a colloid super storage battery containing 4-8 % of nanometer gas phase SiO2 and containing sulfuric acid with concentration of 1.0-1.4 g / cm<2> is prepared. The super lead-acid storage battery disclosed by the invention has the advantages of higher initial energy, better charging accepting capacity, better low temperature performance, more excellent large current discharging characteristic and longer cycle life and completely satisfies use requirements of power batteries. The super lead-acid storage battery disclosed by the invention is helpfully applied to electric automobile batteries or used for upgrading and remodeling the traditional storage batteries.

Description

technical field [0001] The invention belongs to the technical field of lead accumulators, and in particular relates to a super lead-acid accumulator which contains a carbon-coated lead composite negative electrode and uses part of red lead as an anode material and a preparation method thereof. Background technique [0002] Lead-acid batteries have gone through more than 100 years of development and have made great contributions to the development of human society. Although lead-acid batteries may have certain pollution risks due to imperfect technology in the manufacturing process and recycling process, their good reliability, high cost performance, and abundant resources that can be completely recycled have made lead-acid batteries popular in society. Life, industrial production and even military fields will remain widely used. [0003] Although the technical development of lead-acid batteries is very mature, its performance defects such as low utilization of active materi...

Claims

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Application Information

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IPC IPC(8): H01M4/56H01M4/62H01M10/12
CPCY02T10/7016Y02E60/126Y02E60/10Y02P70/50
Inventor 石光陈红雨胡杰魏文武王辉窦传龙
Owner ZHUZHOU SMELTER GRP
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