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Carbon sphere material, preparation thereof and application of carbon sphere material in lead-carbon battery

A technology of lead-carbon batteries and carbon balls, which is applied in the direction of lead-acid batteries, carbon preparation/purification, battery electrodes, etc., which can solve the problems of limiting the long life of lead-carbon batteries, the aggravation of electrode sulfation, and the drying up of electrolytes, etc. Achieve the effects of hindering hydrogen ion combination, inhibiting hydrogen evolution, and improving stability

Pending Publication Date: 2022-05-13
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The introduction of carbon materials must overcome a key problem, that is, the negative electrode of lead-carbon batteries has a large hydrogen evolution current, which leads to a large amount of gas production during battery operation, which leads to the gradual drying of the electrolyte and the intensification of electrode sulfation, which limits Exploitation of the long-life characteristics of lead-carbon batteries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step 1: The carbon sphere material is prepared by the following method:

[0021] 1) Fully dissolve 10.269g of sucrose in 50ml of ultrapure water, then add 4.401g [23%] melamine and 4.401g of sodium dihydrogen phosphate to it, stir the mixed solution for 5 minutes and transfer it to a polythene with a rated volume of 100ml In the PTFE hydrothermal kettle, transfer the hydrothermal kettle to an oven at 180°C for 12 hours;

[0022] 2) 10g of the product obtained in step 1) was added with an appropriate amount of ultrapure water for centrifugal washing several times, and the obtained product was dried and transferred to N 2 Sinter at 800°C for 5 hours in an atmosphere, and transfer the sintered product to CO 2 Activation at 800°C for 5 hours in atmospheric environment. A carbon sphere material with an average diameter of 3 μm was obtained.

[0023] Step 2: Prepare lead-carbon battery by following steps: 1. Preparation of negative electrode: (1) 600g of lead powder, 9g of...

Embodiment 2

[0027] The process is the same as in Example 1, except that the lead-carbon battery: according to the requirements of Example 1, without changing other conditions, the amount of melamine added is changed to 1.8122g [13%]. The assembled internal hybrid battery can run for 17998 laps in the normal temperature life test. Compared with the test results of ordinary lead-acid batteries with the same lead element content under the same test conditions (7198 cycles), the normal temperature cycle life of internal mixed lead-carbon batteries can reach 2.5 times the life of traditional lead-acid batteries.

Embodiment 3

[0029] The process is the same as in Example 1, and the difference is that lead-carbon battery: according to the requirements of Example 1, without changing other conditions, the addition of sodium dihydrogen phosphate is changed to 1.8122g. The assembled internal hybrid battery can run for 17989 laps in the normal temperature life test. Compared with the test results of ordinary lead-acid batteries with the same lead element content under the same test conditions (7198 cycles), the normal temperature cycle life of internal mixed lead-carbon batteries can reach 2.5 times the life of traditional lead-acid batteries.

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Abstract

The invention relates to a lead-carbon battery, in particular to a carbon sphere material as well as preparation and application thereof in the lead-carbon battery, which is characterized in that sucrose or fructose, sodium phosphate, melamine and water are added into a hydrothermal reaction vessel for hydrothermal reaction; and transferring the dried product to an N2 atmosphere environment for sintering, and transferring the sintered product to a CO2 atmosphere environment for activation to obtain the carbon sphere material. The carbon sphere material of the lead-carbon battery loaded with the nitrogen-containing functional group on the surface is prepared by a hydrothermal method, so that the consumption of electrolyte in the battery circulation process can be reduced, and the cycle service life of the battery is prolonged.

Description

technical field [0001] The invention relates to the field of lead-carbon batteries, in particular to the fields of energy storage batteries and start-stop batteries. Background technique [0002] The lead-carbon battery is to add a certain amount of activated carbon and conductive carbon materials to the negative plate of the lead-acid battery to eliminate the problem of sulfation during the operation of the battery to the greatest extent, thereby effectively improving the service life of the battery. [0003] The introduction of carbon materials must overcome a key problem, that is, the negative electrode of lead-carbon batteries has a large hydrogen evolution current, which leads to a large amount of gas production during battery operation, which leads to the gradual drying of the electrolyte and the intensification of electrode sulfation, which limits The long-life characteristics of lead-carbon batteries are brought into play. In order to alleviate the hydrogen evolutio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05H01M4/587H01M4/62H01M10/06
CPCC01B32/05H01M4/587H01M4/625H01M10/06H01M2004/027C01P2004/32C01P2004/62C01P2004/61
Inventor 阎景旺李先锋席耀宁张华民
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI