Carbon material in-situ deposited nanometer lead crystal grain/lead oxide composite material and preparation method thereof

An in-situ deposition and composite material technology, applied in the field of nanomaterials, can solve the problems of increasing the self-discharge reaction of lead-carbon batteries, increasing the cost of lead negative electrode recycling, unfavorable industrial production, etc., to achieve large-scale production, electrochemical Excellent performance and the effect of suppressing agglomeration

Active Publication Date: 2019-09-06
重庆锦添翼新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantages of this patent are: (1) the obtained core-shell structure activated carbon composite material contains non-lead (bismuth, gallium) elements, which will inevitably increase the self-discharge reaction of the lead-carbon battery and increase the recycling cost of the lead negative electrode; (2) ) The raw material cost is expensive, and the bismuth salt and gallium salt used must be bismuth nitrate and gallium nitrate; (3) in the preparation method, the solid solution formed by bismuth salt-gallium salt needs to carry out microwave sintering in the atmosphere of water vapor and carbon dioxide, and the preparation conditions Harsh, complex process route, and low output, not conducive to large-scale industrial production

Method used

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  • Carbon material in-situ deposited nanometer lead crystal grain/lead oxide composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A carbon material in-situ deposited nano-lead / lead oxide grain composite material and its mass percentage are:

[0030] Carbon material 80%

[0031] Nano lead grains 15%

[0032] Lead Oxide 5%

[0033] Wherein: the carbon material is graphene nanosheets.

[0034] A preparation method for in-situ deposition of carbon material nano-lead crystal grains / lead oxide composite material, the specific steps are as follows:

[0035] (1) Dissolve lead nitrate in deionized water according to the ratio of the mass (g) of lead nitrate: the volume (ml) of deionized water is 0.1:500, and mix solution A after fully stirring.

[0036] (2) According to the mass (g) of the carbon material: the ratio of the volume of the mixed solution A (ml) is 1:500, the carbon material is uniformly dispersed in the mixed solution A, and mixed and stirred at room temperature for 10 minutes to obtain carbon Mixture B of material and soluble lead salt.

[0037] Wherein: the carbon material is graphene ...

Embodiment 2

[0044] A carbon material in-situ deposited nano-lead crystal grains / lead oxide composite material and its mass percentage are:

[0045] Carbon material 70%

[0046] Nano lead grains 24%

[0047] Lead Oxide 6%

[0048] Wherein: the carbon material is carbon nanotube.

[0049] A preparation method for in-situ deposition of carbon material nano-lead grains / lead oxide composite material, same as Example 1, wherein:

[0050] In step (1), the mixed solution A is configured according to the ratio of the mass (g) of lead nitrate: the volume (mL) of deionized water is 0.2:500.

[0051] In step (2), the mixed solution B is prepared according to the ratio of the mass (g) of the carbon material: the volume (mL) of the mixed solution A is 1:500, and stirred for 15 minutes. Wherein: the carbon material is carbon nanotube.

[0052] In step (3), the mixed solution C is prepared according to the volume ratio of the alkali solution: the mixed solution B is 1:50, and stirred for 15 minutes....

Embodiment 3

[0056] A carbon material in-situ deposited nano-lead crystal grains / lead oxide composite material and its mass percentage are:

[0057] Carbon material 60%

[0058] Nano lead grains 33%

[0059] Lead Oxide 7%

[0060] Wherein: the carbon material is activated carbon.

[0061] A preparation method for in-situ deposition of carbon material nano-lead grains / lead oxide composite material, same as Example 1, wherein:

[0062] In step (1), the mixed solution A is configured according to the ratio of the mass (g) of lead nitrate: the volume (mL) of deionized water is 0.3:500.

[0063] In step (2), the mixed solution B is prepared according to the mass (g) of the carbon material: the volume (mL) of the mixed solution A is 1:500, and stirred for 18 minutes. Wherein: the carbon material is activated carbon.

[0064] In step (3), the mixed solution C is prepared according to the volume ratio of the alkali solution: the mixed solution B is 1:50, and stirred for 18 minutes. Wherein: ...

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Abstract

The invention provides a carbon material in-situ deposited nanometer lead crystal grain/lead oxide composite material and a preparation method thereof. A final product is obtained through processes of mixing, chemical precipitation, solid-liquid separation, washing and drying and high-temperature sintering and the like with the carbon materials and soluble lead salts serving as raw materials. Themethod is simple in process, convenient to operate and low in production cost, is conducive to realizing large-scale production and is convenient for popularization and application; and the product prepared through the method has the advantages of high conductivity, high hydrogen evolution overpotential, high capacitance and excellent electrochemical performance and the like. The method can be widely applied to electrochemical power sources of lead-carbon batteries, lithium-ion batteries and supercapacitors and the like.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a carbon material in-situ deposited nanometer lead grain / lead oxide composite material and a preparation method thereof. Background technique [0002] After more than 150 years of development, lead-acid batteries have been widely used in electric power, communications, military, transportation, navigation, aviation and many other economic fields due to their advantages such as easy availability of raw materials, low price, good safety performance, and high recovery rate. energy storage devices. However, the specific surface area of ​​the active material of the negative plate of the traditional lead-acid battery is small, and it is difficult to charge quickly. Under the working condition of HRPSoC, it is easy to sulfate and cause the plate to fail, resulting in a greatly reduced battery cycle life, which makes the development of lead-acid batteries lag behi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/57H01M4/62H01M10/06B82Y30/00
CPCB82Y30/00H01M4/362H01M4/57H01M4/628H01M10/06H01M2004/027Y02E60/10
Inventor 李新禄吴玉洋王荣华李永健
Owner 重庆锦添翼新能源科技有限公司
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