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A kind of preparation method of lead-graphene composite material for lead-carbon battery

A technology for composite materials and lead-carbon batteries, which is applied in the manufacture of lead-acid battery electrodes, battery electrodes, and hybrid/electric double-layer capacitors. Realize the effect of large-scale production and convenient operation

Active Publication Date: 2022-07-26
重庆锦添翼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

The invention adopts simple liquid phase reaction, centrifugation, high-temperature sintering and other methods to prepare lead-graphene composite material, the process is simple, and the obtained lead-graphene has high hydrogen evolution overpotential, which is a good solution to the low hydrogen evolution overpotential of graphene The problem

Method used

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  • A kind of preparation method of lead-graphene composite material for lead-carbon battery

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) a preparation method of lead-graphene composite material for lead-carbon batteries, wherein:

[0035] 1.1) get soluble lead salt and join in deionized water, according to soluble lead salt: deionized water ratio is 0.1g: 100ml configuration, obtain mixed solution A, wherein soluble lead salt is lead nitrate;

[0036] 1.2) get graphene and join in mixed solution A, according to graphene: mixed solution A ratio is 0.05g: 100ml configuration, obtain mixed solution B;

[0037] 1.3) get alkaline solution and join in mixed solution B, according to alkaline solution: mixed solution B ratio is 1ml: 100ml configuration, obtain mixed solution C, wherein alkaline solution is NaOH solution, and pH value is 14;

[0038] 1.4) Centrifuge the mixed solution C prepared in step 3, collect the precipitate, wash with washing solution, until the centrifuge reaches neutrality (i.e. pH reaches 7) to obtain a solid residue, wherein the washing solution is deionized water, centrifugal The r...

Embodiment 2

[0049] 1) a preparation method of lead-graphene composite material for lead-carbon battery, with implementation case 1, wherein:

[0050] The soluble lead salt described in step 1.1) is lead nitrate, and the mixed solution A is configured according to the ratio of lead nitrate: deionized water as 0.25g: 100ml;

[0051] The mixed solution B described in step 1.2) is configured according to graphene: mixed solution A ratio of 0.5g: 100ml;

[0052] The mixed solution C described in step 1.3) is configured according to the alkali solution: the mixed solution B ratio is 5ml:100ml, wherein the alkali solution is a KOH solution, and the pH value is 10;

[0053] The washing solution described in step 1.4) is absolute ethanol, and the centrifugal speed is 5000r / min during centrifugation, and the centrifugation time is 3min;

[0054] The freeze-drying temperature described in step 1.5) is -70 ℃, and the vacuum degree is 10Pa;

[0055] The protective atmosphere described in step 1.6) i...

Embodiment 3

[0062] 1) a preparation method of lead-graphene composite material for lead-carbon battery, with implementation case 1, wherein:

[0063] The soluble lead salt described in the step (1) is lead nitrate, and the mixed solution A is configured according to the ratio of lead nitrate: deionized water as 0.25g:100ml;

[0064] The mixed solution B described in the step (2) is configured according to the ratio of graphene: mixed solution A: 0.5g: 100ml;

[0065] The mixed solution C described in the step (3) is configured according to the alkali solution: the mixed solution B ratio is 10ml: 100ml, wherein the alkali solution is Na 2 CO 3 solution, pH 8;

[0066] The washing solution described in the step (4) is absolute ethanol, and the centrifugal rotation speed is 4000r / min during centrifugation, and the centrifugation time is 8min;

[0067] The freeze-drying temperature described in the step (5) is -50 ℃, and the vacuum degree is 20Pa;

[0068] The protective atmosphere descri...

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Abstract

The invention provides a preparation method of a lead-graphene composite material for a lead-carbon battery. The lead-graphene composite material is prepared by simple liquid phase reaction, centrifugation, high temperature sintering and other methods. The process is simple and the production efficiency is high, which is conducive to realizing Large-scale production, easy to popularize and apply. The obtained lead-graphene composite material has high hydrogen evolution overpotential, which well solves the problem of low hydrogen evolution overpotential of graphene and improves the capacitance performance of graphene. The composite material can effectively improve the rate performance, charge acceptance and HRPSOC cycle life of the battery as an additive for the negative electrode of the lead-carbon battery, and reduce the water loss of the lead-carbon battery, and has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of graphene application, and in particular relates to a preparation method of a lead-graphene composite material for a lead-carbon battery. Background technique [0002] In 2004, physicists from the University of Manchester in the United Kingdom successfully separated graphene from graphite. Graphene has a perfect two-dimensional crystal structure. Its lattice is a hexagon surrounded by six carbon atoms, with a thickness of one atomic layer. . The carbon atoms are connected by σ bonds, and the bonding method is sp 2 Hybridized, these σ bonds endow graphene with extremely excellent mechanical properties and structural rigidity. In graphene, each carbon atom has an unbonded p electron, and these p electrons can move freely in the crystal, giving graphene good electrical conductivity. Due to its high conductivity, high strength, ultra-thinness and other characteristics, graphene has broad application prospec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/20H01M4/36H01M4/56H01M4/583H01M16/00H01G11/30H01G11/36H01G11/86
CPCH01M4/20H01M4/362H01M4/56H01M4/583H01M16/00H01G11/30H01G11/36H01G11/86Y02E60/10
Inventor 李新禄张艳艳赵昱颉粟泽龙赵奚誉王荣华
Owner 重庆锦添翼新能源科技有限公司