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Bowl-shaped carbon material and preparation method thereof, and point-line-plane three-phase composite conductive paste

A technology of composite conductive and carbon materials, used in circuits, electrical components, battery electrodes, etc., can solve the problem of not being able to build a three-dimensional conductive network, and achieve the effect of improving performance and excellent performance

Inactive Publication Date: 2018-01-19
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Like carbon nanotubes, the sheet-like structure of graphene determines that electrons can conduct in two-dimensional space, and is also regarded as an ideal conductive agent. However, the limitations of its two-dimensional structure and high specific surface area also lead to its inactive Materials cannot build a perfect three-dimensional conductive network like carbon nanotubes

Method used

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  • Bowl-shaped carbon material and preparation method thereof, and point-line-plane three-phase composite conductive paste
  • Bowl-shaped carbon material and preparation method thereof, and point-line-plane three-phase composite conductive paste
  • Bowl-shaped carbon material and preparation method thereof, and point-line-plane three-phase composite conductive paste

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Embodiment 1

[0045] The present embodiment provides a kind of preparation method of bowl-shaped carbon material, it comprises the following specific steps:

[0046] (1), Weigh 2.0g block copolymer F127 and 3.0g dopamine hydrochloride and add in the mixed solution of 200mL deionized water and ethanol (the volume ratio of water and ethanol is 0.8:1) successively, then add 5.0mL Mesitylene was dropped into it, and 10.0 mL of ammonia water was added dropwise while stirring at room temperature. After stirring for 2 h, the mixed solution of deionized water and ethanol (the volume ratio of water and ethanol was 0.8:1) was washed several times to remove the active agent. F127;

[0047] (2), uniformly disperse the washed polydopamine particles in a mixed solution of deionized water and ethanol (the volume ratio of water and ethanol is 0.8:1), place in a sealed hydrothermal kettle for hydrothermal reaction, set The oven temperature is 120°C, and the hydrothermal reaction time is 24h;

[0048] (3) ...

Embodiment 2

[0050] The present embodiment provides a kind of preparation method of bowl-shaped carbon material, it comprises the following specific steps:

[0051] (1), Weigh 2.0g block copolymer F127 and 3.0g dopamine hydrochloride and add in the mixed solution of 200mL deionized water and ethanol (the volume ratio of water and ethanol is 0.8:1) successively, then add 5.0mL Mesitylene was dropped into it, and 10.0 mL of ammonia water was added dropwise while stirring at room temperature. After stirring for 2 h, the mixed solution of deionized water and ethanol (the volume ratio of water and ethanol was 0.8:1) was washed several times to remove the active agent. F127;

[0052] (2), uniformly disperse the washed polydopamine particles in a mixed solution of deionized water and ethanol (the volume ratio of water and ethanol is 0.8:1), place in a sealed hydrothermal kettle for hydrothermal reaction, set The oven temperature is 120°C, and the hydrothermal reaction time is 24h;

[0053] (3) ...

Embodiment 3

[0055] The present embodiment provides a kind of preparation method of bowl-shaped carbon material, it comprises the following specific steps:

[0056] (1), Weigh 2.0g block copolymer F127 and 3.0g dopamine hydrochloride and add in the mixed solution of 200mL deionized water and ethanol (the volume ratio of water and ethanol is 0.8:1) successively, then add 5.0mL Mesitylene was dropped into it, and 10.0 mL of ammonia water was added dropwise while stirring at room temperature. After stirring for 2 h, the mixed solution of deionized water and ethanol (the volume ratio of water and ethanol was 0.8:1) was washed several times to remove the active agent. F127;

[0057] (2), uniformly disperse the washed polydopamine particles in a mixed solution of deionized water and ethanol (the volume ratio of water and ethanol is 0.8:1), place in a sealed hydrothermal kettle for hydrothermal reaction, set The oven temperature is 120°C, and the hydrothermal reaction time is 24h;

[0058] (3) ...

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Abstract

The invention provides a bowl-shaped carbon material and a preparation method thereof, and point-line-plane three-phase composite conductive paste. The preparation method of the bowl-shaped carbon material comprises the steps of (1) adding a block copolymer F127 and dopamine hydrochloride into a mixed solution of deionized water and ethyl alcohol in sequence, and next, dropwise adding trimethylbenzene thereto to obtain a mixed solution A; adding ammonium hydroxide to the mixed solution A in a stirring condition, and performing continuous stirring to obtain a mixed solution B; washing the mixedsolution B by the mixed solution of deionized water and ethyl alcohol to remove the block copolymer F127, and performing filtering to obtain polydopamine granules; (2) uniformly dispersing the polydopamine granules into the mixed solution of deionized water and ethyl alcohol, and performing a hydrothermal reaction in a sealing condition; and (3) performing calcining treatment on the product obtained in the hydrothermal reaction in inert atmosphere. The invention also provides the point-line-plane three-phase composite conductive paste comprising the bowl-shaped carbon material; and when the paste is used as the conductive agent of the battery, the battery performance can be improved effectively.

Description

technical field [0001] The invention relates to a bowl-shaped carbon material, its preparation and point-line-surface three-phase composite conductive paste, belonging to the technical field of carbon materials. Background technique [0002] Dopamine is a high-carbon biomolecule, which widely exists in the shell surface of organisms, and is a sustainable (renewable) carbon source material for human beings. Dopamine will polymerize into polydopamine balls under a certain pH condition, and polydopamine carbon materials can be obtained after polydopamine balls are carbonized. Due to its well-developed pore structure and excellent hydrothermal stability, polydopamine carbon materials have attracted attention in the fields of catalytic materials, membrane materials and surface modification of electrode materials. [0003] Since Carbon Nanotubes (CNTs) were first discovered by Japanese electron microscope scientist Iijima in 1991, as a one-dimensional carbon nanomaterial, it has ...

Claims

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Application Information

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IPC IPC(8): H01M4/62
CPCY02E60/10
Inventor 李永峰苗华迪傅婧怡马新龙徐春明
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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