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Negative electrode for liquid-rich internal mixed lead-carbon battery and preparation and application thereof

A lead-carbon battery and internal hybrid technology, applied in the direction of electrode carrier/collector, etc., can solve the problems of inability to meet the needs of vehicle start-stop application upgrades, low resistance to high-current shocks, etc.

Active Publication Date: 2019-06-04
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The present invention aims to address the fact that the unit volume capacity of the rich liquid internal parallel lead-carbon battery is much lower than that of the traditional lead-acid battery and that the poor liquid internal mixed lead-acid battery has too low resistance to large current shocks, which cannot meet the needs of vehicle start-stop applications and existing fuel oil. To meet the needs of upgrading lead-acid batteries for vehicles, it is necessary to provide a rich liquid internal mixture that has a capacity similar to that of traditional lead-acid batteries, has higher resistance to large current shocks, and has a longer cycle life when working in a partially charged state. Type lead-carbon battery, negative electrode and preparation method thereof

Method used

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  • Negative electrode for liquid-rich internal mixed lead-carbon battery and preparation and application thereof
  • Negative electrode for liquid-rich internal mixed lead-carbon battery and preparation and application thereof
  • Negative electrode for liquid-rich internal mixed lead-carbon battery and preparation and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Weigh 95g of activated carbon, add it to 250g of deionized water, and stir well. Weigh 7.42 g of lead nitrate, add it into 50 g of deionized water, and stir until the lead nitrate is completely dissolved. Add the obtained lead nitrate solution to activated carbon dispersed in deionized water, stir well, then place it in an electric blast drying oven, heat to 90°C, and keep the temperature constant for 12 hours to remove the water in it. The dried product was placed in a tube furnace, nitrogen gas was fed continuously, the temperature was raised to 280°C, and the temperature was kept for 6 hours to obtain lead-poisoned activated carbon. Weigh 95.5g of carbon fiber, add it into 125g of deionized water, and stir well. Weigh 3.71 g of lead nitrate, add it to 25 g of deionized water, and stir until the lead nitrate is completely dissolved. Add the obtained lead nitrate solution to the carbon fiber dispersed in deionized water, stir well, then place it in an electric blast ...

Embodiment 2

[0042] Weigh 95g of activated carbon, add it to 250g of deionized water, and stir well. Weigh 14.84 g of lead nitrate, add it into 100 g of deionized water, and stir until the lead nitrate is completely dissolved. Add the obtained lead nitrate solution to activated carbon dispersed in deionized water, stir well, then place it in an electric blast drying oven, heat to 90°C, and keep the temperature constant for 12 hours to remove the water in it. The dried product was placed in a tube furnace, nitrogen gas was fed continuously, the temperature was raised to 280°C, and the temperature was kept for 6 hours to obtain lead-poisoned activated carbon. Weigh 95.5g of carbon fiber, add it into 125g of deionized water, and stir well. Weigh 7.42 g of lead nitrate, add it to 50 g of deionized water, and stir until the lead nitrate is completely dissolved. Add the obtained lead nitrate solution to the carbon fiber dispersed in deionized water, stir well, then place it in an electric blas...

Embodiment 3

[0044] Weigh 95g of activated carbon, add it to 250g of deionized water, and stir well. Weigh 7.42 g of lead nitrate, add it into 50 g of deionized water, and stir until the lead nitrate is completely dissolved. Add the obtained lead nitrate solution into activated carbon dispersed in deionized water, stir well, then place it in an electric blast drying oven, heat to 95°C, and keep the temperature constant for 12 hours to remove the water in it. The dried product was placed in a tube furnace, nitrogen gas was fed continuously, the temperature was raised to 300°C, and the temperature was kept for 6 hours to obtain lead-poisoned activated carbon. Weigh 95.5g of carbon fiber, add it into 125g of deionized water, and stir well. Weigh 3.71 g of lead nitrate, add it to 25 g of deionized water, and stir until the lead nitrate is completely dissolved. Add the obtained lead nitrate solution to the carbon fiber dispersed in deionized water, stir well, then place it in an electric blas...

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Abstract

The invention relates to a negative electrode for a liquid-rich internal mixed lead-carbon battery and preparation and application thereof. The negative electrode comprises a lead material, and the negative electrode contains 0.1-10wt% of carbon material which is subjected to poisoning processing, wherein the carbon material is carbon fibers or activated carbon or a combination of the carbon fibers and the activated carbon. The liquid-rich internal mixed lead-carbon battery has an energy density similar to that of a lead-acid battery, high current impact resistance ability similar to that of an internal parallel type lead-carbon battery and a charge-discharge cycle life of 3 to 5 times of that of a liquid-rich lead-acid battery, and the liquid-rich internal mixed lead-carbon battery is suitable for the start-stop application of a new energy vehicle and the replacement of an existing fuel vehicle vehicle-borne battery.

Description

technical field [0001] The invention relates to the field of lead-carbon batteries, in particular to a mixed-type lead-carbon battery with rich liquid and its negative electrode. Background technique [0002] Lead-carbon battery is a new type of energy storage device that combines supercapacitors and lead-acid batteries. The lead-acid battery is used as the energy source, and the supercapacitor is used as the pulse power, which improves the performance of the battery, thus making up for the deficiency that ordinary valve-regulated lead-acid batteries cannot cope with various complex use conditions. In lead-carbon batteries, the two energy storage methods of supercapacitor and lead-acid battery are integrated in an internal combination, and no special external electronic control circuit is required, so that the size of the battery is controlled, the system is simplified, and the cost of energy storage is reduced. In addition, the lead-carbon battery also has the following ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/74H01M4/82
CPCY02E60/10
Inventor 阎景旺张华民席耀宁李先锋高鹤王再红
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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