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Carbon coated lead composite material and preparation method thereof

A composite material and carbon coating technology, applied in capacitors, coatings, circuits, etc., can solve problems such as performance defects and achieve the effect of inhibiting hydrogen evolution.

Active Publication Date: 2015-05-27
ZHUZHOU SMELTER GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the performance defects of the existing activated carbon used in supercapacitors in super batteries, and propose a carbon-coated lead composite material and its preparation method

Method used

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  • Carbon coated lead composite material and preparation method thereof
  • Carbon coated lead composite material and preparation method thereof
  • Carbon coated lead composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Weigh 5g of lead acetate and dissolve it in 30mL of deionized water, and record it as solution A.

[0027] (2) Weigh 2g of NaOH and dissolve it in 50mL of deionized water, and record it as solution B.

[0028] (3) Add B to A dropwise at 20 drops per minute, stir magnetically for 2 hours, then transfer to a 100mL hydrothermal reactor, react at a constant temperature of 160°C for 12 hours, remove the supernatant to obtain product C.

[0029] (4) Weigh 0.5g of polyvinylpyrrolidone and dissolve it in 70mL of deionized water, slowly add it into the reaction kettle, stir it magnetically for 2 hours, then react at 180°C for 12 hours, filter the product, and wash the filter residue with deionized water and ethanol respectively Once, dried in vacuum at 80°C for 6h to obtain the product D.

[0030] (5) D was carbonized at a constant temperature of 400 °C in an Ar gas atmosphere for 3 h, and the product carbon-coated lead composite was obtained after natural cooling.

[0031...

Embodiment 2

[0033] (1) Weigh 20g of lead nitrate and dissolve it in 30mL of deionized water, and record it as solution A.

[0034] (2) Weigh 5g of KOH and dissolve it in 50mL of deionized water, and record it as solution B.

[0035] (3) Add B to A dropwise at 20 drops per minute, stir magnetically for 3 hours, then transfer to a 100mL hydrothermal reactor, react at a constant temperature of 200°C for 10 hours, remove the supernatant to obtain product C.

[0036] (4) Weigh 60g of sucrose and dissolve it in 70mL of deionized water, slowly add it into the reaction kettle, stir it magnetically for 3 hours, then react at 220°C for 10 hours, filter the product, and wash the filter residue several times with deionized water and ethanol respectively, 80 °C and vacuum dried for 8h to obtain the product D.

[0037] (5) D was carbonized at a constant temperature of 600 °C in an Ar gas atmosphere for 8 h, and the product carbon-coated lead composite was obtained after natural cooling.

[0038] The ...

Embodiment 3

[0040] (1) Weigh 6g of lead nitrate and 8g of lead acetate and dissolve them in 30mL of deionized water, and record it as solution A.

[0041] (2) Dissolve 3g KOH and 2g NaOH in 50mL deionized water, and call it solution B.

[0042] (3) Add B to A dropwise at 20 drops per minute, stir magnetically for 2.5 hours, then transfer to a 100mL hydrothermal reactor, react at a constant temperature of 190°C for 11 hours, and remove the supernatant to obtain product C.

[0043] (4) Weigh 28g of glucose and dissolve it in 70mL of deionized water, slowly add it into the reaction kettle, stir it magnetically for 2.5h, then react at 200°C for 11h, filter the product, and wash the filter residue several times with deionized water and ethanol respectively, After vacuum drying at 90°C for 7 hours, the product D was obtained.

[0044] (5) D was carbonized at a constant temperature of 500 °C in an Ar gas atmosphere for 6 h, and the product carbon-coated lead composite was obtained after natural...

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Abstract

The invention discloses a carbon coated lead composite material and a preparation method thereof. The carbon coated lead composite material is a spherical material with a shell and core structure; the outer shell of the spherical material is a carbon material and the inner core of the spherical material is a lead material; and by using simple raw materials, the carbon coated lead composite material is prepared according to a hydrothermal carbonization process. The dimension of the carbon coated lead composite material is 0.1-20 microns, and lead and carbon weight ratio of the carbon coated lead composite material is (20-80) : (80-20). The carbon coated lead composite material disclosed by the invention has the advantages as follows: the lead and the carbon are closely combined; when being used as a super battery active carbon additive, the carbon coated lead composite material can be more uniformly mixed together with the Pb powder; problems that active carbon materials are separated out, cathode active substances are peeled off and so on in the battery recycling process can be avoided; and through the close combination of the lead and the carbon, hydrogen evolution phenomenon of the carbon material can be also suppressed to a certain degree.

Description

technical field [0001] The invention belongs to the field of activated carbon hybrid materials, and in particular relates to a preparation method of carbon-coated lead composite materials. Background technique [0002] The energy crisis and environmental protection policies are constantly promoting the rapid development of new energy technologies. Supercapacitor, also known as electrochemical capacitor or electric double layer capacitor, is a new type of energy storage device with higher power density and energy density. Supercapacitors have the advantages of long service life, strong environmental adaptability, and high charge and discharge efficiency. After nearly 30 years of development, great progress has been made in supercapacitor technology, especially breakthroughs have been made in high specific surface area and large specific capacity activated carbon. However, since the cost of supercapacitors is still high, and the energy density has always been lower than that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02B22F9/16H01G9/042
Inventor 石光付兴平陈红雨刘境方胡杰魏文武王辉窦传龙
Owner ZHUZHOU SMELTER GRP