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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. Ease of operation and capacity-enhancing effect

Active Publication Date: 2017-03-22
重庆知咚信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Preparation method of lead-graphene composite material for lead-carbon battery

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Experimental program
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Embodiment 1

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

[0035] 1.1) Take the soluble lead salt and add it to deionized water, and prepare according to the ratio of soluble lead salt: deionized water is 0.1g: 100ml to obtain a mixed solution A, wherein the 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) Take the alkaline solution and add it to the mixed solution B, configure according to the alkaline solution: mixed solution B ratio of 1ml: 100ml, to obtain the mixed solution C, wherein the alkaline solution is NaOH solution, and the pH value is 14;

[0038] 1.4) Centrifuge the mixed solution C prepared in step 3, collect the precipitate, and wash it with washing liquid until the centrifuged liquid reaches neutrality (that is, the pH reaches 7) to obtain a solid residue, whe...

Embodiment 2

[0049] 1) A kind of 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 of 0.25g: 100ml;

[0051] Mixed solution B described in step 1.2) is configured according to graphene: mixed solution A ratio is 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, 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°C, and the vacuum degree is 10Pa;

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

Embodiment 3

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

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

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

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

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

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

[0068] The protective atmosphere described in step (6) i...

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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 adopting simple methods of liquid-phase reaction, centrifugation, high-temperature sintering and the like. The process is simple, the production efficiency is high, implementation of large-scale production is facilitated and popularization and application are facilitated. The obtained lead-graphene composite material has high hydrogen evolution overpotential, the problem of low hydrogen evolution overpotential of graphene is well solved and the capacitance performance of the graphene is improved. According to the composite material serving as an additive for a negative electrode of the lead-carbon battery, the rate capability and the charge acceptance of the battery can be effectively improved, the cycle life of an HRPSOC can be effectively prolonged, the water loss of the lead-carbon battery is reduced and the application prospect is wide.

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 at the University of Manchester 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 mode is sp 2 Hybridization, these σ bonds endow graphene with extremely excellent mechanical properties and structural rigidity. In graphene, each carbon atom has an unbonded p-electron, which can move freely in the crystal, endowing graphene with good electrical conductivity. Due to the high conductivity, high strength, and ultra-thin properties of graphene, graphene has broad application prospects in the fields of solar cells, se...

Claims

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Application Information

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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 重庆知咚信息科技有限公司
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