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Graphitized active carbon-based composite additive, preparation method and applications thereof

A composite additive and activated carbon technology, applied in the direction of lead-acid battery electrodes, battery electrodes, hybrid capacitor electrodes, etc., can solve the problem that the electronic conduction ability of activated carbon particles cannot be changed, so as to improve speed and reversibility, reduce internal resistance, and prevent The effect of sulfation

Inactive Publication Date: 2018-06-05
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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  • Graphitized active carbon-based composite additive, preparation method and applications thereof
  • Graphitized active carbon-based composite additive, preparation method and applications thereof
  • Graphitized active carbon-based composite additive, preparation method and applications thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Weigh 0.2 g of analytically pure nickel nitrate, add it to 10 mL of deionized water, and fully stir until completely dissolved to obtain a nickel nitrate solution. Weigh 0.2816 g of analytically pure disodium ethylenediaminetetraacetic acid (EDTA), add it to 20 mL of deionized water, and stir well until it is completely dissolved to obtain an EDTA solution. The prepared nickel nitrate solution was added to the EDTA solution and stirred for 30 min to make the nickel ions fully complexed by EDTA. Then 10g of activated carbon was added to the above solution, stirred for 30min, the obtained slurry was dried at 85°C for 20h, and the powder obtained by drying was dried in N 2 The partially graphitized activated carbon was obtained by calcining at 800 °C for 2 h in a protective atmosphere. Take 1.5g of partially graphitized activated carbon, add it to 150ml of dilute nitric acid solution with a concentration of 1mol / L, stir for 16h, and carry out pickling. After the stirring...

Embodiment 2

[0050] Weigh 0.2 g of analytically pure nickel nitrate, add it to 10 mL of deionized water, and fully stir until completely dissolved to obtain a nickel nitrate solution. Weigh 0.2816 g of analytically pure disodium ethylenediaminetetraacetic acid (EDTA), add it to 20 mL of deionized water, and stir well until it is completely dissolved to obtain an EDTA solution. The prepared nickel nitrate solution was added to the EDTA solution and stirred for 30 min to make the nickel ions fully complexed by EDTA. Then 10g of activated carbon was added to the above solution, stirred for 30min, the obtained slurry was dried at 85°C for 20h, and the powder obtained by drying was dried in N 2 The partially graphitized activated carbon was obtained by calcining at 900 °C for 2 h in a protective atmosphere. Take 1.5g part of graphitized activated carbon, add it to 150ml of dilute nitric acid solution with a concentration of 1mol / L, stir for 16h, and carry out acid washing. The pH value reache...

Embodiment 3

[0052] Weigh 0.2 g of analytically pure nickel nitrate, add it to 10 mL of deionized water, and fully stir until completely dissolved to obtain a nickel nitrate solution. Weigh 0.2816 g of analytically pure disodium ethylenediaminetetraacetic acid (EDTA), add it to 20 mL of deionized water, and stir well until it is completely dissolved to obtain an EDTA solution. The prepared nickel nitrate solution was added to the EDTA solution and stirred for 30 min to make the nickel ions fully complexed by EDTA. Then 10g of activated carbon was added to the above solution, stirred for 30min, the obtained slurry was dried at 85°C for 20h, and the powder obtained by drying was dried in N 2 The partially graphitized activated carbon was obtained by calcining at 800 °C for 5 h in a protective atmosphere. Take 1.5g part of graphitized activated carbon, add it to 150ml of dilute nitric acid solution with a concentration of 1mol / L, stir for 16h, and carry out acid washing. The pH value reache...

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Abstract

The invention relates to a graphitized active carbon-based composite additive, a preparation method and applications thereof, wherein the additive is metal-element-containing graphitized active carbonparticles, the carbon particles contain 0.1-50 wt% of carbon with a graphite structure, the specific surface area of the active carbon particles is 100-3000 m<2> / g, the electric conductivity of the active carbon particles is 0.01-100 S / cm, the metal element is one or more than two selected from Sn, Pb, Bi, Ce, In and Zn, and the metal element content in the additive is 0.01-30 wt%. According to the present invention, the lead-carbon battery negative electrode prepared by using the graphitized active carbon as the additive has advantages of high charge and discharge reversibility, high chargeand discharge cycle life and high charge acceptance compared to the conventional lead acid battery negative electrode.

Description

technical field [0001] The invention belongs to the technical field of lead-carbon batteries, and in particular relates to the composition of a partially graphitized activated carbon-based composite additive, a preparation method, and the application of a negative electrode mixed with the additive in lead-carbon batteries. Background technique [0002] Lead-carbon battery is a new type of energy storage device that combines supercapacitor and lead-acid battery. Lead-acid batteries are used as energy sources, and supercapacitors are used as pulse power to improve the performance of the batteries, thus making up for the shortcomings of ordinary VRLA batteries that cannot cope with various complex conditions of use. In lead-carbon batteries, the two energy storage methods of supercapacitors and lead-acid batteries are integrated internally, and no special external electronic control circuit is required, so that the size of the battery is controlled and the system is simplified,...

Claims

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Application Information

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IPC IPC(8): H01M4/20H01M4/36H01M4/56H01M4/583H01M4/62H01M16/00H01G11/30H01G11/34H01G11/86
CPCH01G11/30H01G11/34H01G11/86H01M4/20H01M4/362H01M4/56H01M4/583H01M4/625H01M16/00Y02E60/10
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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