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A kind of preparation method of lead-carbon composite material

A composite material, lead-carbon technology, used in electrode manufacturing, lead-acid batteries, electrode rolling/calendering, etc., can solve the problem of not being able to give full play to the advantages of carbon's high conductivity and large capacitance, and achieve mass production. The effect of negative electrode life and simple process

Active Publication Date: 2022-03-01
东方旭能(山东)科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a method for preparing a lead-carbon composite material, aiming at the present situation that the advantages of high electrical conductance and large capacitance of carbon cannot be fully utilized due to the mechanical mixing and adding of carbon materials in the current manufacturing process of lead-carbon super batteries.

Method used

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  • A kind of preparation method of lead-carbon composite material

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Embodiment 1

[0025] A preparation method of a lead-carbon composite material, comprising the steps of:

[0026] 1) Preparation of carbon solution: Add 2 grams of graphite into absolute ethanol, then place it in an ultrasonic cleaner at 50°C with an ultrasonic frequency of 80 Hz, and process it for 50 minutes to obtain a uniformly dispersed carbon solution;

[0027] 2) Pretreatment of the surface of the lead plate: the surface of the lead plate is pretreated by degreasing treatment, grinding treatment and acid solution cleaning in sequence; the specific steps of the degreasing treatment are: put the lead plate in a degreasing agent, and heat Soak for 20 minutes, then wash away the residual solution on the surface with deionized water; wherein, the degreasing agent is a tetrasodium solution, and its composition is: 20g / L NaOH, 20g / L NaOH 3 PO 4 , 10g / L Na 2 CO 3 , 4g / L Na 4 SiO 4 . The concrete steps of acid solution cleaning are: acidic solution impregnates the lead plate with smooth ...

Embodiment 2

[0033] A preparation method of a lead-carbon composite material, comprising the steps of:

[0034] 1) Preparation of carbon solution: 0.5 g of graphene was added to acetone, and then placed in an ultrasonic cleaner at 50° C., with an ultrasonic frequency of 80 Hz, and ultrasonically treated for 50 minutes to obtain a uniformly dispersed carbon solution;

[0035] 2) Pretreatment of the surface of the lead plate: the surface of the lead plate is pretreated by degreasing treatment, grinding treatment and acid solution cleaning in sequence; Soak for 10 minutes, then wash away the residual solution on the surface with deionized water; wherein, the degreasing agent is a tetrasodium solution, and its composition is: 20g / L NaOH, 20g / L NaOH 3 PO 4 , 10g / L Na 2 CO 3 , 4g / L Na 4 SiO 4 . The concrete steps of acid solution cleaning are: acidic solution impregnates the lead plate with smooth surface for 5-10 seconds and rinses lead plate with deionized water; acidic solution is made ...

Embodiment 3

[0041] A preparation method of a lead-carbon composite material, comprising the steps of:

[0042] 1) Preparation of carbon solution: Add 33 mg of carbon black to DMF, then place it in an ultrasonic cleaner at 50°C with an ultrasonic frequency of 80 Hz, and process it for 50 minutes to obtain a uniformly dispersed carbon solution;

[0043] 2) Pretreatment of the surface of the lead plate: the surface of the lead plate is pretreated by degreasing treatment, grinding treatment and acid solution cleaning in sequence; the specific steps of the degreasing treatment are: put the lead plate in a degreasing agent, and heat Soak for 20 minutes, then wash away the residual solution on the surface with deionized water; wherein, the degreasing agent is a tetrasodium solution, and its composition is: 20g / L NaOH, 20g / L NaOH 3 PO 4 , 10g / L Na 2 CO 3 , 4g / L Na 4 SiO 4 . The concrete steps of acid solution cleaning are: acidic solution impregnates the lead plate with smooth surface for 5-1...

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Abstract

The invention relates to a preparation method of a lead-carbon composite material, comprising the following steps: 1) preparing a carbon solution; 2) pretreating a lead plate; 3) coating the surface of the lead plate with a carbon layer, and uniformly coating the carbon solution on the surface of the lead plate , and finally put two lead plates up and down to form a laminate, and the two planes coated with carbon solution are bonded together to form a laminated lead plate with a carbon core structure between the lead plates; 4) Calendering of the lead plate: place the laminated lead plate on the After heat preservation at 100-300°C for 10-30 minutes, take it out and carry out rolling and calendering treatment. After the calendering treatment, a vertically elongated lead plate is obtained, and then the lead plate is folded longitudinally and symmetrically, and the mass fraction of carbon is controlled to be 0.01-10%. ; 5) Repeat the processing of the obtained lead plate several times according to the processing method in step 4), to obtain the lead-carbon composite material.

Description

technical field [0001] The invention relates to a preparation method of a lead-carbon composite material, belonging to the technical field of battery materials. Background technique [0002] With the increasing shortage of traditional energy sources, new energy technologies are getting more and more attention. At present, the commonly used secondary chemical power sources mainly include lead-acid batteries, lithium-ion batteries, nickel-metal hydride batteries, fuel cells, nickel-cadmium batteries and supercapacitors. However, due to some safety and price considerations, it is difficult for lithium-ion batteries and nickel-hydrogen batteries to be applied on a large scale in a short period of time. Lead-acid batteries have the advantages of mature technology, high cost performance, large capacity, good safety performance, and good circular economic benefits. They have become the battery with the largest output and the widest range of applications in the world. However, whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/38H01M4/62H01M10/06H01M4/04
CPCH01M4/0435H01M4/366H01M4/38H01M4/628H01M10/06Y02E60/10
Inventor 彭烨刘超李竞妍汤帅张艳萍
Owner 东方旭能(山东)科技发展有限公司
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