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Preparation method of nano lead/carbon composite material and application of nano lead/carbon composite material

A technology of carbon composite materials and carbon materials, which is applied in the direction of lead-acid batteries, electrical components, battery electrodes, etc., can solve the problems of increasing battery self-discharge rate, low content requirements, and high impurity content, so as to improve cycle life and inhibit Hydrogen evolution reaction, the effect of small particles

Inactive Publication Date: 2019-06-07
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is very complicated. The carbon source is biomass. The carbon material formed after roasting contains more impurities. Some of the impurities (chlorine, iron, etc.) in the super lead-carbon battery can increase the self-discharge rate of the battery, so for Its content is very low

Method used

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  • Preparation method of nano lead/carbon composite material and application of nano lead/carbon composite material
  • Preparation method of nano lead/carbon composite material and application of nano lead/carbon composite material
  • Preparation method of nano lead/carbon composite material and application of nano lead/carbon composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0036] (1) Prepare solution 1: add 10 ml of deionized water to a 50 ml beaker, then add 10 ml of 30% hydrogen peroxide, stir with a glass rod, and mix well.

[0037] (2) Prepare solution 2: add 1 g of coconut shell carbon (hydrogen evolution overpotential is 1.22V, specific capacitance is 160F / g) into solution 1, and then stir under magnetic force for half an hour.

[0038] (3) Prepare solution 3: add 50 ml of deionized water to a 250 ml beaker, then add 1.655 g of lead nitrate, and stir magnetically for half an hour.

[0039] (4) Prepare solution 4: add solution 2 to solution 3, and stir magnetically for half an hour.

[0040] (5) Precursor preparation: Add 0.5g CTAB to solution 4, stir magnetically for one hour, vacuum filter, put the solid in a vacuum drying oven, set the temperature at 80°C, and dry for 12 hours to obtain the precursor.

[0041] (6) Product preparation: Grind the precursor into powder and put it into a tube furnace. The setting procedure is as follows: th...

Embodiment 2

[0045] (1) Solution 1: Add 20 ml of deionized water into a 50 ml beaker, then add 10 ml of 30% hydrogen peroxide, stir with a glass rod, and mix well.

[0046] (2) Solution 2: Add 0.1 g of rice husk charcoal (hydrogen evolution overpotential is 1.2V, specific capacitance is 175F / g) into solution 1, and then stirred under magnetic force for one hour.

[0047] (3) Solution 3: 50 ml of deionized water was added to a 250 ml beaker, and then 1 g of lead chloride was added, and magnetically stirred for one hour.

[0048] (4) Solution 4: Add solution 2 into solution 3, and stir magnetically for half an hour.

[0049] (5) Precursor preparation: Add 0.1 g of PVP to solution 4, stir magnetically for one hour, vacuum filter, put the solid in a vacuum drying oven, set the temperature at 80°C, and dry for 12 hours.

[0050] (6) Product preparation: Grind the precursor into powder and put it into a tube furnace. The setting procedure is as follows: the initial temperature is 25°C, the heatin...

Embodiment 3

[0056] (1) Solution 1: Add 80 ml of deionized water to a 250 ml beaker, then add 40 ml of 30% hydrogen peroxide and 40 ml of nitric acid, stir with a glass rod, and mix well.

[0057] (2) Solution 2: Add 1.0 g of graphene (hydrogen evolution overpotential is 1.10V, specific capacitance is 202F / g.) into solution 1, and then stirred under magnetic force for one hour.

[0058] (3) Solution 3: 50 ml of deionized water was added to a 250 ml beaker, and then 5 g of lead acetate was added, and magnetically stirred for one hour.

[0059] (4) Solution 4: Add solution 2 into solution 3, and stir magnetically for half an hour.

[0060] (5) Precursor preparation: Add 1 g of CTAB to solution 4, stir magnetically for one hour, vacuum filter, put the solid in a vacuum drying oven, set the temperature at 80°C, and dry for 12 hours.

[0061] (6) Product preparation: Grind the precursor into powder and put it into a tube furnace. The setting procedure is as follows: the initial temperature is ...

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Abstract

The present invention discloses a preparation method of a nano lead / carbon composite material and application of a nano lead / carbon composite material. The preparation method comprises the following steps of: (1) adding a carbon material into an oxidant aqueous solution for oxidation treatment to obtain a mixed liquor A; (2) mixing a lead source aqueous solution with the mixture A for stirring above 0.5 hours to allow lead ions to be absorbed at the surface of the carbon material to obtain a mixed liquor B; (3) adding a surfactant into the mixed liquor B for stirring above 0.5 hours, and performing filtering and vacuum drying to obtain a precursor; and (4) in a protective atmosphere, performing calcinations of the obtained precursor at a temperature of 300-700 DEG C, and performing thermaltreatment to obtain a nano lead / carbon composite material. The present invention provides application of the nano lead / carbon composite material taken as a super Pb-C battery anode material. The preparation method of the nano lead / carbon composite material is simple in operation, the obtained lead particles are very small and are uniformly dispersed on the surface of the carbon material, and thecomposite material can better inhibit the hydrogen evolution reaction.

Description

technical field [0001] The invention relates to a preparation method of a nanometer lead / carbon composite material and its application in a super lead-carbon battery. Background technique [0002] Lead-acid batteries occupy a major market in the field of medium and low-speed electric vehicles due to their advantages of low price, safe use, and wide operating temperature range. However, the service life of traditional lead-acid batteries is not long, and its cycle life ranges from 300 to 500 weeks. However, the cycle life of super lead-carbon batteries developed by introducing carbon materials into the negative electrode can be increased by 3-6 times. Super lead-carbon battery is a new type of battery that combines the capacitive characteristics of carbon materials and the high specific energy advantages of lead-acid batteries. Experiments have proved that super lead-carbon batteries have great performance in low temperature (-18°C) discharge and high current discharge. Adva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/38H01M10/06
CPCY02E60/10
Inventor 王连邦张兴冯冲吴昊苏利伟
Owner ZHEJIANG UNIV OF TECH
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