Three-dimensional graphene nanoribbon/carbon nanoribbon bridged structural material, and preparation method and application thereof
A technology of graphene nanobelts and carbon nanotubes, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of reduced lithium storage space in batteries, poor stability of lithium batteries, and easy structure of GNRs. collapse and other problems, to achieve the effect of enhanced lithium storage capacity, good electrical conductivity and mechanical properties, sufficient electron transport and mass transfer
Inactive Publication Date: 2015-08-26
FUDAN UNIV
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The invention belongs to the technical field of nanometer materials, and specifically relates to a three-dimensional graphene nanoribbon/carbon nanoribbon bridged aerogel material, a preparation method and application thereof. According to the invention, aerogel is prepared by assembling basic structural units formed by bridging the graphene nanoribbon stripped from the carbon nanoribbon with unstripped carbon nanoribbon and doping the basic structural units with heteroatom as needed. The preparation of the aerogel comprises the following steps: preparing a carboxylic carbon nanotube solution, wherein a proper amount of a soluble dopant is added or not added into the solution; then carrying out hydrothermal treatment so as to obtain uniform hydrogel, placing the hydrogel in an ionic impregnation agent for complete replacement, then carrying out secondary hydrothermal treatment so as to finish a stripping process; and finally, carrying out drying and carbonizing so as to obtain the graphene nanoribbon/carbon nanoribbon bridged structural aerogel. The aerogel can be used as an anode material of lithium ion battery, shows high specific capacity and excellent stability and rate performance, and has important research significance and good application prospects.
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Property | Measurement | Unit |
Specific surface area | 529.0 ~ 621.0 | m²/g |
Aperture | 1.0 | nm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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