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Spongy C-SiC composite material and preparation method thereof

A composite material and sponge-like technology, which is applied in the field of sea sponge-like C-SiC composite material and its preparation, can solve problems such as a large amount of power consumption, and achieve the effects of improving electrical conductivity, shortening transmission distance and stable structure.

Active Publication Date: 2018-10-16
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires a high temperature of 1800°C and consumes a lot of electricity

Method used

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  • Spongy C-SiC composite material and preparation method thereof
  • Spongy C-SiC composite material and preparation method thereof
  • Spongy C-SiC composite material and preparation method thereof

Examples

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Embodiment 1

[0064] This embodiment provides a method for preparing a sea-sponge C-SiC composite material, comprising the following steps:

[0065] (0) Preparation of porous carbon spheres

[0066] (0.1) Weigh 19.68g of sodium chloroacetate and dissolve it in 130mL of deionized water to form a light yellow transparent solution, and add it to a humidifier;

[0067] (0.2) Turn on the tube furnace, when the temperature of the quartz tube of the tube furnace reaches 600°C, continuously feed 1.0L / min Ar gas into the humidifier, and introduce the mist into the quartz glass tube of the tube furnace;

[0068] (0.3) After the reaction, use 75% ethanol to collect the black solid in the quartz glass tube, centrifuge to collect the product, and vacuum dry to obtain carbon spheres with a porous structure.

[0069] (1) C-SiO 2 preparation of

[0070] (1.1) Weigh 25 mg of porous carbon spheres prepared in the above step (0), dissolve them in a total volume of 50 mL of aqueous ethanol (the volume ratio...

Embodiment 2

[0081] This embodiment provides a method for preparing a sea-sponge C-SiC composite material, comprising the following steps:

[0082] (0) Preparation of porous carbon spheres

[0083] (0.1) Take an appropriate amount of configured sodium chloroacetate solution with a concentration of 1.8mol / L and add it to the humidifier;

[0084] (0.2) First turn on the tube furnace and gradually increase the furnace temperature. When the temperature rises to 700°C, turn on the humidifier switch and use nitrogen as the carrier gas. The gas flow rate is controlled at 1.25L / min, and the atomized mist droplets are introduced into the in a quartz tube;

[0085] (0.3) After the reaction, the product was washed with 75% ethanol for 3 to 5 times, centrifuged and dried to obtain carbon spheres with a porous structure.

[0086] (1) C-SiO 2 material preparation

[0087] (1.1) Mix and disperse 25 mg of porous carbon spheres prepared in step (0) and 1 mL of 10 mM CTAB solution in a total volume of 5...

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Abstract

The invention provides a spongy C-SiC composite material and a preparation method thereof, and relates to the technical field of composite material preparation. The preparation method comprises the following steps: uniformly dispersing porous structure carbon spheres and tetraethoxysilane into a mixed solution of ethyl alcohol and deionized water in a certain proportion, adding ammonia water, reacting for several hours, centrifugally collecting a product, and carrying out vacuum drying after repeated washing to obtain a product C-SiO2; uniformly mixing the product C-SiO2 with magnesium powderin an appropriate mass proportion, transferring the mixture into a closed reactor and putting the closed reactor into a tubular furnace, controlling at a certain temperature rise rate, preserving thetemperature for a period of time, collecting the product after cooling, and carrying out vacuum drying after washing the product with certain concentrations of diluted hydrochloric acid and hydrofluoric acid in sequence to obtain the spongy C-SiC composite material. As an example but not restricted, through the scheme provided by the invention, the preparation method has the beneficial effects that the technology is simple, mild in preparation condition, convenient in product treatment, stable in product shape and high in purity, and is applicable for medium-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a sea sponge C-SiC composite material and a preparation method thereof. Background technique [0002] In recent years, lithium-ion batteries have developed rapidly, replacing lead-acid batteries, nickel-cadmium batteries and nickel-metal hydride batteries in various fields, becoming one of the important chemical power sources of modern transportation, communication equipment and many other high-tech fields. Compared with the main electrochemical energy storage devices, lithium-ion batteries have higher energy density and are currently the most widely used. [0003] Typical lithium-ion batteries store energy through the deintercalation of lithium ions. It is widely used in portable electronic devices, but it has gradually failed to meet the requirements of battery applications. Moreover, in the process of charging and discharging, the materials are easy to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/587H01M4/62H01M10/0525B82Y30/00
CPCB82Y30/00H01M4/362H01M4/587H01M4/625H01M10/0525Y02E60/10
Inventor 温鸣李佳琪陈世培李维娜
Owner TONGJI UNIV
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