Carbon nanofibers | Properties of carbon nanofibers

Carbon nanofibers

Carbon nanofibers are a type of nanoscale carbon fiber that is a one-dimensional carbon component between carbon nanotubes and carbon fibers. They can be classified as hollow carbon nanofibers and solid carbon nanofibers according to their structural properties. Its diameter is usually in the range of 10 to 500 nm and its length is from 0.5 to 200 mm. It has a higher degree of crystal orientation and is preferred for electrical and thermal conductivity. Not only does it have the same or lower density, high modulus, high strength, high conductivity, and thermal stability, but also has advantages such as a small number of defects, a large aspect ratio, a large surface, and a compact structure.

Carbon nanofibers

History of carbon nanofibers

One of the first technical records concerning carbon nanofibers was probably patented in 1889 filamentous carbon synthesis by Hughes and Chambers. They use a methane/hydrogen gaseous mixture and increase the carbon filament through gas pyrolysis and subsequent carbon accumulation and filament growth. The actual realization of these fibers came much later when their structure could be analyzed by electronic microscopy. The first electronic microscopy examining carbon nanofibers that were performed in the early 1950s by Soviet scientists Raduskevich and Lukyanovich. In 1991, Japanese researcher Sumio Ijima synthesized hollow carbon molecules to determine their crystal structure. At that time, these molecules were called "carbon nanotubes". VGCNF is produced through basically the same manufacturing process as VGCF, only the diameter is usually less than 200 nm. Some global companies are actively involved in the commercial-scale production of carbon nanofibers and new engineering applications are being intensively developed for these materials.

Properties of carbon nanofibers

1. Carbon nanofibers have a high level of chemical bonding flexibility.

2. It has a number of allotropes including diamond, graphite, and fullerenes.

3. This underscores the versatility of CNFs, which is notable for their thermal, electrical, and electromagnetic protection, and increase in mechanical properties.

4. Since carbon is readily available at a low cost, CNFs are a popular addition to composite materials.

5. CNFs exist on very small, nanometer scales.

6. Carbon nanofibers (CNFs) are clearly used as anode materials for the production of numerous interstitial sites, they show the great performance of sodium and lithium storage.

7. Carbon nanofibers (CNF) are produced catalytically in the CVD process.

8. It has a diameter ranging between 150–300 nm.

Reactions

Post a Comment

0 Comments