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Partially graphitized activated carbon-based composite additive and preparation, negative electrode and application

A composite additive, activated carbon technology, applied in battery electrodes, lead-acid battery electrodes, structural parts, etc., can solve the problem of not changing the electronic conductivity of activated carbon particles, reduce energy consumption and water consumption, simplify the preparation process, high The effect of charge-discharge reversibility

Active Publication Date: 2020-06-26
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

Due to the mechanical mixing of conductive carbon black and activated carbon, the electronic conductivity inside the activated carbon particles cannot be changed.

Method used

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  • Partially graphitized activated carbon-based composite additive and preparation, negative electrode and application
  • Partially graphitized activated carbon-based composite additive and preparation, negative electrode and application
  • Partially graphitized activated carbon-based composite additive and preparation, negative electrode and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Weigh 0.078g of lead nitrate and add it into 4ml of deionized water, and stir until fully dissolved to obtain a lead nitrate solution. Weigh 1 g of activated carbon, add it into the above-mentioned lead nitrate solution and stir evenly to obtain a slurry. Then, 0.069 g of sulfuric acid having a density of 1.245 g / ml (25° C.) was slowly dropped into the slurry while stirring. The resulting mixture was dried at 85 °C for 20 h to obtain the activated carbon precursor powder deposited with lead sulfate. Put the above precursor powder in N 2 Calcined at 600°C for 2 hours in a protective atmosphere to obtain lead-poisoned partially graphitized activated carbon. 10g of lead powder, 0.15g of lead-poisoned partially graphitized activated carbon, 0.14g of barium sulfate, and 0.005g of short polypropylene fibers with a length of 5mm were premixed with a high-speed mixer. 1.4 g of deionized water was then added to the premixed powder with stirring. After stirring evenly, slowly...

Embodiment 2

[0045] Weigh 0.078g of lead nitrate and add it into 4ml of deionized water, and stir until fully dissolved to obtain a lead nitrate solution. Weigh 1 g of activated carbon, add it into the above-mentioned lead nitrate solution and stir evenly to obtain a slurry. Then, 0.069 g of sulfuric acid having a density of 1.245 g / ml (25° C.) was slowly dropped into the slurry while stirring. The resulting mixture was dried at 85 °C for 20 h to obtain the activated carbon precursor powder deposited with lead sulfate. Put the above precursor powder in N 2 Calcined at 700°C for 2 hours in a protective atmosphere to obtain lead-poisoned partially graphitized activated carbon. 10g of lead powder, 0.15g of lead-poisoned partially graphitized activated carbon, 0.14g of barium sulfate, and 0.005g of short polypropylene fibers with a length of 5mm were premixed with a high-speed mixer. 1.4 g of deionized water was then added to the premixed powder with stirring. After stirring evenly, slowly...

Embodiment 3

[0047] Weigh 0.078g of lead nitrate and add it into 4ml of deionized water, and stir until fully dissolved to obtain a lead nitrate solution. Weigh 1 g of activated carbon, add it into the above-mentioned lead nitrate solution and stir evenly to obtain a slurry. Then, 0.069 g of sulfuric acid having a density of 1.245 g / ml (25° C.) was slowly dropped into the slurry while stirring. The resulting mixture was dried at 85 °C for 20 h to obtain the activated carbon precursor powder deposited with lead sulfate. Put the above precursor powder in N 2 Calcined at 800°C for 2 hours in a protective atmosphere to obtain lead-poisoned partially graphitized activated carbon. 10g of lead powder, 0.15g of lead-poisoned partially graphitized activated carbon, 0.14g of barium sulfate, and 0.005g of short polypropylene fibers with a length of 5mm were premixed with a high-speed mixer. 1.4 g of deionized water was then added to the premixed powder with stirring. After stirring evenly, slowly...

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Abstract

The invention relates to a partially-graphitized active carbon-based lead-carbon battery composite additive, a preparation method and applications thereof, wherein graphite ribbons are distributed inactive carbon particles, the graphite ribbon content in the carbon particles is 0.1-50 wt%, the active carbon particles contain lead as a hydrogen evolution inhibitor, the specific surface area of thematerial is 10-3000 m<2> / g, the electrical conductivity is 0.01-100 S / cm, and the lead content is 0.01-30 wt%. According to the present invention, the preparation process has advantages of simple steps, low energy consumption, low water consumption, low production cost and the like; and the lead-carbon battery with the negative electrode doped with the lead poisoning partially-graphitized activecarbon has excellent charging / discharging reaction reversibility, excellent charging / discharging cycle life and excellent charging receiving capability compared to the traditional lead acid battery.

Description

technical field [0001] The invention belongs to the technical field of lead-carbon batteries, and in particular relates to the composition and preparation method of a lead-poisoned partially graphitized activated carbon additive, and the application of a negative electrode doped with the additive in a lead-carbon battery. 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/62H01M4/14H01M4/20H01M10/06
CPCH01M4/14H01M4/20H01M4/625H01M4/628H01M10/06Y02E60/10
Inventor 阎景旺席耀宁张华民李先锋张洪章孙海涛霍玉龙王再红高鹤
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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