Fwcnt

Few-walled carbon nanotubes FWCNT and single-walled carbon nanotubes are both types of carbon nanotubes. The main difference between them is the number of tube wall layers. Single-walled carbon nanotubes, as the name suggests, are carbon nanotubes with only one tube wall, while few-walled carbon nanotubes FWCNT refer to carbon nanotubos com menos camadas de parede de tubo, geralmente duas a três camadas .

Carbon nanotubes (CNTs) are a typical one-dimensional nanomaterial and have been one of the research hotspots in the field of materials science for many years. Few-walled carbon nanotubes FWCNT are light in weight, have a perfectly connected hexagonal structure, and have many excellent mechanical properties, electrical conductivity and chemical properties.

Vantagens de desempenho de nanotubos de carbono

Highest specific strength: The covalent bonds connecting carbon atoms in carbon nanotubes are the most stable chemical bonds in nature. Carbon nanotubes have extremely high tensile strength and elastic modulus. At the same time, the density of carbon nanotubes is only 1/6 of that of steel, making them the material with the highest specific strength that can be prepared at presente .

Strong flexibility: Carbon nanotubes are strong but not brittle. When bending carbon nanotubes or applying pressure to them axially, even if the external force exceeds the Euler strength limit or bending strength, the carbon nanotubes will not break, but will first bend at a large angle. When the external force is released, the carbon nanotubes will return to their original forma .

Good conductivity: The structure of carbon nanotubes is the same as the lamellar structure of graphite, and has good conductivity. The resistance of carbon nanotubes is independent of their length and diameter, and electrons will not generate heat to heat carbon nanotubes when passing through them. The transmission of electrons in carbon nanotubes is like the transmission of light signals in optical fiber cabos, com perda mínima de energia, tornando -os excelentes condutores de bateria .

Bom desempenho de armazenamento de hidrogênio: os próprios nanotubos de carbono têm uma área de superfície específica alta e, após o tratamento, eles têm excelente capacidade de armazenamento de hidrogênio .

Excelentes propriedades de inserção de lítio: a cavidade do tubo oco de nanotubos de carbono, as lacunas entre os tubos, as lacunas entre camadas na parede do tubo e vários defeitos na estrutura do tubo fornecem espaço de armazenamento abundante e canais de transporte para íons de lítio .}}}

Estabilidade química: os nanotubos de carbono são quimicamente estáveis ​​e têm resistência ácida e alcalina . adicionando nanotubos de carbono aos compósitos de polímeros podem melhorar a resistência ao ácido e a oxidação do próprio material .

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