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Additive for negative electrode plate of lead storage battery, and preparation method thereof

A technology of lead-acid batteries and additives, applied in lead-acid batteries, battery electrodes, circuits, etc., which can solve the problems of accelerating battery hydrogen evolution and increasing costs

Active Publication Date: 2014-09-03
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of activated carbon, carbon nanotubes and graphene as additive batteries will increase significantly, and carbonaceous materials will accelerate the hydrogen evolution of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The crucible that fills 10g potassium carbonate is put into the muffle furnace, and the muffle furnace is heated up to 700 ℃, then feeds 50 sccm of acetylene and methane mass ratio 1: 1 mixed gas into the furnace, and reacts for 60 minutes to make the powder The product was added to a 500 mL, 0.2 mol / L lead nitrate solution to react for 0.8 hours, washed and dried, and then heat-treated at 400° C. for 1 hour to obtain the lead battery negative plate additive. The mass ratio of carbon and lead oxide in the obtained additive is 1:200 after testing. The length and width of layered carbon measured by scanning electron microscope are 2.50 μm and 1.50 μm respectively, the average number of layers is 10 layers, and the average size of lead oxide particles is 100 nm. Evenly distributed on the layered carbon surface.

[0019] In the negative electrode lead powder, add the obtained additive according to the ratio of 0.2% of its mass, and prepare a 12V12Ah specification battery ac...

Embodiment 2

[0021] Spread a mixture of 5g of potassium carbonate and 5g of sodium carbonate on the bottom of the corundum crucible, put the crucible into the muffle furnace, heat up the muffle furnace to 700°C, and then feed 100 sccm of acetylene and methane into the furnace with a mass ratio of 1:3 After reacting for 60 minutes, the powdery product was added to 500mL, 0.15mol / L lead nitrate solution for 1.1 hours, the product was washed and dried, and then heat-treated at 400°C in air for 1 hour to obtain the additive product. After testing the mass ratio of carbon to lead oxide in the additive is 1:20, the length and width of layered carbon are 150 μm and 50 μm respectively through scanning electron microscope observation, the average number of layers is 10 layers, and the average size of lead oxide particles is 120nm. The charcoal is evenly distributed on the surface.

[0022] Add gained additive according to the ratio of 0.5% of its mass in negative electrode lead powder, and prepare ...

Embodiment 3

[0024] Spread a mixture of 3g of potassium carbonate and 5g of sodium carbonate on the bottom of the corundum crucible, put the crucible in a muffle furnace, heat up the muffle furnace to 1100°C, and then feed 80 sccm of carbon monoxide and methane into the furnace with a mass ratio of 1:1 After 120 minutes of reaction, the product was taken out, and the product powder was added to a 600mL, 0.20mol / L lead nitrate solution to react for 2.0 hours. After the product was washed and dried, it was heat-treated at 400°C in the air for 1 hour to obtain the additive product. . The mass ratio of carbon to lead oxide in the test additive is 1.5:10, and the length and width of layered carbon are 200 μm and 70 μm through scanning electron microscope observation, the average number of layers is 20 layers, and the average size of lead oxide particles is 100 nm. The charcoal is evenly distributed on the surface.

[0025] Add gained additive according to the ratio of 0.4% of its mass in negat...

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Abstract

The invention provides an additive for a negative electrode plate of a lead storage battery, and a preparation method thereof. The additive is a layered carbon / lead oxide composite material. The layer number of the layered carbon is 1-50; lead oxide particles are uniformly adhered on the layered carbon; the size of the lead oxide particles is 5-200 nm; and a mass ratio of the layered carbon to lead oxide is 1:1-200. The additive for the negative electrode plate of the lead storage battery can effectively increase energy density, power density and cycle life of the lead storage battery.

Description

technical field [0001] The invention relates to a battery negative electrode additive and a preparation method thereof, in particular to a lead-acid storage battery composite negative electrode additive and a preparation method thereof. Background technique [0002] With the rapid development of electric vehicles such as pure electric vehicles and hybrid electric vehicles HEV, lead-acid batteries have a good application prospect in electric vehicles due to their rich raw material resources, low price, mature technology and good safety. Due to the low specific power of lead-acid batteries and the short service life of high-power discharge, its development is restricted. The main cause of the above problems is caused by the negative electrode. Due to high-density current discharge, a large number of lead ions generated by the negative electrode enter the electrolyte. The corresponding situation is that the diffusion of sulfate ions in the electrolyte is limited, resulting in e...

Claims

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Application Information

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IPC IPC(8): H01M4/62
CPCH01M4/56H01M4/625H01M10/06Y02E60/10
Inventor 张浩胡晨杨凯曹高萍刘皓王丽娜惠东来小康杨裕生
Owner STATE GRID CORP OF CHINA
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