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A method for preparing a lead-carbon composite material by iterative calendering

A composite material and calendering technology, applied in electrode rolling/calendering, electrode manufacturing, lead-acid batteries, etc., can solve problems such as the inability to give full play to the advantages of high carbon conductivity and large capacitance, and achieve large-scale production in batches and improve negative electrodes. The effect of easy control of life and reaction conditions

Active Publication Date: 2019-01-18
东方旭能(山东)科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims 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, and provides a method for preparing lead-carbon composite materials by iterative calendering

Method used

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  • A method for preparing a lead-carbon composite material by iterative calendering

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Embodiment 1

[0026] A method for preparing lead-carbon composite material by iterative rolling includes the following steps:

[0027] 1) Preparation of carbon solution: Add 2 grams of graphite to absolute ethanol, and then place it in an ultrasonic cleaner at 50°C, with an ultrasonic frequency of 80 Hz, and ultrasonic treatment for 50 minutes to obtain a uniformly dispersed carbon solution;

[0028] 2) Pretreatment of the lead plate surface: the lead plate surface is pretreated by degreasing treatment, grinding treatment and acid solution cleaning in sequence; the specific steps of the degreasing treatment are: putting the lead plate into the degreasing agent at 40℃ Soak for 20 minutes, then wash off the residual solution on the surface with deionized water; among them, the degreaser is tetrasodium solution, and its composition is: 20g / L NaOH, 20g / L Na 3 PO 4 , 10g / L Na 2 CO 3 , 4g / L Na 4 SiO 4 . The specific steps of acid solution cleaning are as follows: the acid solution soaks the lead plate...

Embodiment 2

[0034] A method for preparing lead-carbon composite material by iterative rolling includes the following steps:

[0035] 1) Preparation of carbon solution: add 0.5 g of graphene to acetone, and then place it in an ultrasonic cleaner at 50°C with an ultrasonic frequency of 80 Hz and ultrasonic treatment for 50 minutes to obtain a uniformly dispersed carbon solution;

[0036] 2) Pretreatment of the lead plate surface: the lead plate surface is pretreated by degreasing treatment, polishing treatment and acid solution cleaning in sequence; the specific steps of the degreasing treatment are: putting the lead plate into the degreasing agent at 60℃ Soak for 10 minutes, then wash off the residual solution on the surface with deionized water; among them, the degreaser is a tetrasodium solution, and its composition is: 20g / L NaOH, 20g / L Na 3 PO 4 , 10g / L Na 2 CO 3 , 4g / L Na 4 SiO 4 . The specific steps of acid solution cleaning are as follows: the acid solution soaks the lead plate with a sm...

Embodiment 3

[0042] A method for preparing lead-carbon composite material by iterative rolling includes the following steps:

[0043] 1) Preparation of carbon solution: 33mg of carbon black was added to DMF, and then placed in an ultrasonic cleaner at 50°C, the ultrasonic frequency was 80 Hz, and ultrasonic treatment was performed for 50 minutes to obtain a uniformly dispersed carbon solution;

[0044] 2) Pretreatment of the lead plate surface: the lead plate surface is pretreated by degreasing treatment, grinding treatment and acid solution cleaning in sequence; the specific steps of the degreasing treatment are: putting the lead plate into the degreasing agent at 40℃ Soak for 20 minutes, then wash off the residual solution on the surface with deionized water; among them, the degreaser is tetrasodium solution, and its composition is: 20g / L NaOH, 20g / L Na 3 PO 4 , 10g / L Na 2 CO 3 , 4g / L Na 4 SiO 4 . The specific steps of acid solution cleaning are as follows: the acid solution soaks the lead pl...

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Abstract

The invention relates to a method for preparing a lead-carbon composite material by iterative calendering, comprising the following steps: 1) preparing a carbon solution; 2) pretreat-fing a lead plate; 3) coating that surface of the lead plate with a carbon layer, uniformly coating a carbon solution on the surface of the lead plate, placing the two lead plates in a laminated layer on the upper andlow sides, and bonding two planes coated with the carbon solution to form a laminated lead plate with a carbon-sandwiched core structure; 4) calendering the lead plate: placing the laminated lead plate under the environment of 100-300 DEG C for 10-30min, then taking out the laminated lead plate for rolling calendering treatment, obtaining the longitudinally elongated lead plate after calenderingtreatment, and then folding the lead plate longitudinally and symmetrically to control the mass fraction of carbon to be 0.01-10%; 5) repeatedly treating that obtained lead plate several time according to the treatment method of step 4) to obtain a lead-carbon composite material.

Description

Technical field [0001] The invention relates to a method for preparing a lead-carbon composite material, in particular to a method for preparing a lead-carbon composite material by iterative rolling. Background technique [0002] With the increasing shortage of traditional energy, 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-hydrogen batteries, fuel cells, nickel-cadmium batteries and super capacitors. However, due to factors such as safety and price, it is difficult for lithium-ion batteries and nickel-hydrogen batteries to be widely used 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 economy benefits. They have become the world's largest output and most widely used battery. However, when the lead-acid battery is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/57H01M4/62H01M4/04H01M10/06
CPCH01M4/0435H01M4/364H01M4/57H01M4/625H01M4/628H01M10/06Y02E60/10
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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