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Carbon cloth with uniformly distributed cobalt particles and grown with vertical graphene as well as preparation method and application of carbon cloth

A technology with uniform particles and graphene, applied in the direction of active material electrodes, electrical components, electrochemical generators, etc., can solve the problems of high dendrite growth, low Coulomb efficiency, large volume effect, etc., achieve high energy density, reduce volume effect, the effect of relieving volume expansion

Active Publication Date: 2021-04-13
ZHANGJIAGANG INST OF IND TECH SOOCHOW UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still three major problems in the use of sodium metal anodes: 1. Too much dendrite growth; 2. Low Coulombic efficiency; 3. Large volume effect

Method used

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  • Carbon cloth with uniformly distributed cobalt particles and grown with vertical graphene as well as preparation method and application of carbon cloth
  • Carbon cloth with uniformly distributed cobalt particles and grown with vertical graphene as well as preparation method and application of carbon cloth
  • Carbon cloth with uniformly distributed cobalt particles and grown with vertical graphene as well as preparation method and application of carbon cloth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The present embodiment provides a kind of synthetic method of the carbon cloth that the long vertical graphene of cobalt particle is uniformly distributed, and it comprises the following steps:

[0034] (a) Arrange the carbon in the CVD furnace, vacuumize, feed 100sccm argon and 10sccm methane, grow vertical graphene at 500-600°C by 80w PECVD to obtain the first carbon cloth, and add 0.493g 2-methyl Imidazole and 0.218g cobalt nitrate were uniformly dispersed in 20ml water respectively, and mixed to obtain the first solution;

[0035] (b) Put the first carbon cloth into the first solution with magnetic stirring, react for 4-5h to grow Co-MOF, take it out, wash it with deionized water, and dry it to obtain the second carbon cloth; The carbon is arranged in a tube furnace, and argon-protected annealing is used to obtain a carbon cloth with vertical graphene with evenly distributed cobalt particles (first burn at 400°C for 3 hours, then burn at 700°C for 8 hours, and the h...

Embodiment 2

[0043] The present embodiment provides a kind of synthetic method and the application thereof of the carbon cloth that the long vertical graphene of cobalt particle is uniformly distributed, and it is basically consistent with embodiment 1, and difference only is: in step (a), the cobalt nitrate The amount added was 0.175 g.

Embodiment 3

[0045] The present embodiment provides a kind of synthetic method and the application thereof of the carbon cloth that the long vertical graphene of cobalt particle is uniformly distributed, and it is basically consistent with embodiment 1, and difference only is: in step (a), the cobalt nitrate The amount added was 0.262g.

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Abstract

The invention provides carbon cloth with uniformly distributed cobalt particles and grown with vertical graphene as well as a preparation method and application of the carbon cloth. The preparation method comprises the following steps of growing vertical graphene on carbon cloth through PECVD reaction to obtain first carbon cloth, respectively and uniformly dispersing 2-methylimidazole and cobalt nitrate in water to obtain a first solution, adding the first carbon cloth into the first solution, mixing and stirring, reacting for 4h to 5h to grow Co-MOF, cleaning and drying to obtain second carbon cloth, and carrying out annealing treatment on the second carbon cloth under the protection of argon to obtain the carbon cloth with uniformly distributed cobalt particles and grown with vertical graphene. A sodium ion total battery assembled by the carbon cloth with uniformly distributed cobalt particles and grown with vertical graphene can realize good electrochemical performance.

Description

technical field [0001] The invention relates to a carbon cloth with vertical graphene in which cobalt particles are uniformly distributed and a preparation method thereof, belonging to the technical field of alkali metal batteries. Background technique [0002] At present, lithium-ion batteries have occupied most of the energy storage market. Due to their high energy density and stable safety factor, they have been commercialized and are increasingly welcomed and developed by everyone. As we all know, lithium resources are quite scarce and unevenly distributed. It is predicted that by 2025, the consumption of metallic lithium will exceed 20% of its production. Therefore, it is particularly important to find an alternative alkaline metal battery. In the periodic table of elements, sodium is next to the same main group as lithium metal. Because sodium ions cannot store energy in graphite negative electrodes, its commercial development is limited. Therefore, designing a new ty...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/583H01M10/054
CPCH01M4/366H01M4/583H01M10/054H01M2004/027Y02E60/10
Inventor 孙靖宇卢晨
Owner ZHANGJIAGANG INST OF IND TECH SOOCHOW UNIV
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