Super lead carbon battery with active carbon negative electrode and preparation method thereof

A super battery and activated carbon technology, applied in lead-acid batteries, lead-acid battery electrodes, lead-acid battery construction, etc., can solve problems such as affecting the normal use of supporting products, short lifespan of lead batteries, and narrow operating temperature range, etc. The effect of salinization, prolonging cycle life and improving low temperature performance

Inactive Publication Date: 2010-06-30
NANJING SHUANGDENG SCI TECH DEV RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, lead-acid batteries used in energy storage systems such as solar energy and wind energy, and electric vehicle drive power systems have defects such as short life (about 300 to 500 times) and narrow...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 87.55wt.% lead powder, 0.08wt.% short fiber, 0.5wt.% conductive carbon black, 0.27wt.% sodium lignin sulfonate, 0.4wt.% barium sulfate are uniformly dry mixed, and then add raw materials with a weight ratio of 8~10wt.% deionized water for wet mixing, then add 2wt.% density of 1.4g / cm 3 sulfuric acid solution; then these lead pastes are double-coated on one side of a grid-shaped lead alloy grid with a thickness of 2.5mm, cured at high temperature and high humidity, and dried to make a lead negative electrode.

[0019] At the same time, dry mix 7.6wt.% activated carbon and 0.6wt.% conductive carbon black evenly, add a mixture of 0.5wt.% CMC and 0.5wt.% LA 132, and then apply the mixed paste on both sides of the aforementioned On the other side of the grid-shaped lead alloy grid, dry it at a temperature of 50-80°C to make an activated carbon negative electrode. The lead negative electrode and the activated carbon negative electrode form an internal parallel connection o...

Embodiment 2

[0023] In addition to adjusting the capacity of the activated carbon negative electrode to the total capacity of the negative electrode of the battery to 5%, the electrolyte is 1.3g / cm 3 Except the sulfuric acid, all the other are assembled into lead-carbon supercapacitor battery by the method of embodiment 1.

[0024] According to 0.12C rate, constant voltage and current limiting charge and discharge in the voltage range of 1.0V to 2.35V, the low-temperature discharge capacity of the lead-carbon super battery produced can reach more than 54% of the discharge capacity at room temperature 25°C, and the deep cycle service life Can reach more than 1990 times.

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Abstract

The invention discloses a super lead carbon battery with an active carbon negative electrode and a preparation method thereof. The negative electrode of the supper lead carbon battery comprises the active carbon negative electrode and a lead negative electrode which are internally parallel. A positive electrode of the battery adopts PbO2 as an active substance. A separator adopts an AGM diaphragm. Electrolyte adopts 1.0-1.4g/cm<3> sulfuric acid. By introducing the active carbon negative electrode into the lead negative electrode in parallel internally to act as the active substance, the invention can greatly promote the charge acceptance ability of the negative electrode, effectively improve the low temperature property of the super lead carbon battery, and greatly mitigate sulfation phenomenon in the negative electrode, so that the deep-cycle life can reach more than 1,800 times. Compared with cost of an inorganic system carbon-carbon symmetric mode and a nickel electrode-carbon mixed alkali system, the invention can greatly reduce the material cost of products. Compared with a traditional lead-acid battery, the invention can greatly prolong recycling lifetime of products and have obvious performance price ratio advantage.

Description

technical field [0001] The invention belongs to the technical field of lead storage batteries, and in particular relates to a lead-carbon super battery containing an activated carbon negative electrode and a preparation method thereof. Background technique [0002] Lead-acid batteries have a history of 150 years. Because of their good reliability, high cost performance, rich resources and recyclability, they have been widely used in social life, industrial production and even military fields. [0003] With the rapid development of the global economy and society, the shortage of resources and energy, and the deterioration of the ecological environment, human beings will be more dependent on renewable energy such as solar energy, wind energy, biomass energy or hydrogen energy. Among them, lead-acid batteries used in energy storage systems such as solar energy and wind energy, and electric vehicle drive power systems have defects such as short life (about 300 to 500 times) and ...

Claims

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Application Information

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IPC IPC(8): H01M10/06H01M4/14H01M10/12H01M4/20
CPCY02E60/126Y02E60/10Y02P70/50
Inventor 佘沛亮杨善基
Owner NANJING SHUANGDENG SCI TECH DEV RES INST
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