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A kind of graphene conductive polymer lead-acid battery and preparation method thereof

A conductive polymer and lead-acid battery technology, applied in lead-acid batteries, lead-acid battery construction, battery electrodes, etc., can solve problems such as easy agglomeration, poor dispersion of graphene, safety of lead-acid batteries, and hidden dangers of unknown electrical properties , to achieve the effect of preventing agglomeration, improving conductivity and reducing muddy phenomenon

Active Publication Date: 2018-09-07
江西力之奇新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the poor dispersion of nanoscale graphene, there is a problem of easy agglomeration
Moreover, the titanium oxide / graphene composite material will introduce impurity metals, and there are still unknown hidden dangers to the safety and electrical properties of lead-acid batteries.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method for graphene conductive polymer lead-acid battery, comprising the following steps:

[0037] a. Dissolve polyacetylene in N-methylpyrrolidone solvent at 110° C., then add graphene into the solvent and stir. Wherein the mass ratio of the graphene to the polymer is 9:2, and the quality of the solvent is 4 times of the total mass of the graphene and the polymer. The graphene is prepared by a redox method; and the number of graphene layers is 1-50 layers, and the particle size is 20nm-10um.

[0038] After the graphene powder is completely infiltrated, the water bath is ultrasonicated, the temperature of the water bath is 52°C, the ultrasonic time is 1.5h; the stirring time is 2.5h, and the stirring speed is 450rpm. Then stir to obtain graphene polymer mixture.

[0039] b. Freeze-drying the graphene polymer mixture; obtaining graphene polymer powder.

[0040] c. Mixing the obtained graphene polymer powder and the positive electrode additive according t...

Embodiment 2

[0044] A preparation method for graphene conductive polymer lead-acid battery, comprising the following steps:

[0045] a. Dissolve polythiophene in dimethyl sulfoxide solvent at 100°C, then add graphene into the solvent and stir. Wherein the mass ratio of the graphene to the polymer is 2:8, and the quality of the solvent is 3.5-times of the total mass of the graphene and the polymer. The graphene is prepared by a mechanical exfoliation method; and the number of graphene layers is 1-50 layers, and the particle size is 20nm-10um.

[0046] After the graphene powder is completely infiltrated, the water bath is ultrasonicated, the temperature of the water bath is 45°C, the ultrasonic time is 3h; the stirring time is 4h, and the stirring speed is 200rpm. Then stir to obtain graphene polymer mixture.

[0047] b. drying and drying the graphene polymer mixture at a temperature of 190° C. to obtain graphene polymer powder.

[0048] c. Mixing the obtained graphene polymer powder and ...

Embodiment 3

[0052] A preparation method for graphene conductive polymer lead-acid battery, comprising the following steps:

[0053] a. Dissolve polypyrrole and polyaniline in dimethylacetamide at 120°C, then add graphene into the solvent and stir. Wherein the mass ratio of the graphene to the polymer is 9:1, and the quality of the solvent is 4.5 times of the total mass of the graphene and the polymer. The graphene is prepared by a mechanical exfoliation method; and the number of graphene layers is 1-50 layers, and the particle size is 20nm-10um.

[0054] After the graphene powder is completely infiltrated, the water bath is sonicated, the temperature of the water bath is 60°C, the ultrasonic time is 0.1h; the stirring time is 0.5h, and the stirring speed is 700rpm. Then stir to obtain graphene polymer mixture.

[0055] b. Freeze-drying the graphene polymer mixture; obtaining graphene polymer powder.

[0056] c. Mixing the obtained graphene polymer powder and the positive electrode addi...

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Abstract

The invention relates to the field of lead-acid batteries, and discloses a graphene conductive polymer lead-acid battery and a preparation method thereof. The following substances are included in every 10000 parts by mass of the positive lead paste of the graphene conductive polymer lead-acid battery: 9960-9980 parts of lead powder, 15-45 parts of positive electrode additive, 0.4-3.2 parts of graphene polymer powder; the graphite Graphene polymer powder is prepared from polymer, solvent, graphene; The mass ratio of described graphene and polymer is 2:8-9:1, and the quality of described solvent is 3.5% of the total mass of graphene and polymer ‑4.5 times. The graphene conductive polymer lead-acid battery prepared by the invention can effectively improve the conductivity of the active material of the positive electrode, increase the capacity of the battery, reduce the muddy phenomenon of the positive electrode during the use of the battery, and improve the service life of the battery.

Description

technical field [0001] The invention relates to the field of lead-acid batteries, in particular to a graphene conductive polymer lead-acid battery and a preparation method thereof. Background technique [0002] The conductivity of the positive electrode in lead-acid batteries is an important factor affecting the performance of the positive plate. Good electrical conductivity shortens the formation process cycle of the positive plate, reduces positive electrode slime, and improves the utilization rate of living things. [0003] As a new type of two-dimensional material, graphene has good electrical conductivity, thermal conductivity, mechanical properties, and low resistivity, making it suitable for use in lead-acid batteries. High-quality graphene is chemically stable at high potential and has higher oxidation resistance than other common carbon materials. [0004] For example, the Chinese invention patent with the application number of 201410304261.2 discloses a positive ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/57H01M4/62H01M10/06H01M10/12
CPCH01M4/57H01M4/62H01M4/625H01M10/06H01M10/12Y02E60/10Y02P70/50
Inventor 石沫戴贵平柯娃吴亮吴秋菊
Owner 江西力之奇新能源科技有限公司