High-temperature epitaxial graphite deposition on macroscopic superaligned carbon nanotube structures by a one-step self-heating method

By using superaligned carbon nanotube (SACNT) macrostructures as reinforcements, the one-step homoepitaxial growth of SACNT/graphite composites was achieved with a home-built experimental setup at temperatures as high as 2600 degrees C. Compared with traditional furnace heating method, this approach offers the advantages of increased convenience, high throughput and energy efficiency. This high-temperature homoepitaxy strategy was applied to three kinds of structures: SACNT yarn, SACNT film, and SACNT array. Because of the high temperature which exceeded 1800 degrees C, the samples after high-temperature homoepitaxy showed increased G/D peak area ratios in the Raman spectra, enhanced mechanical properties and improved thermal properties, all of which can meet the requirements of various applications. (C) 2020 Elsevier Ltd. All rights reserved.

Automated summary

The one-step homoepitaxial growth of SACNT/graphite composites using superaligned carbon nanotube macrostructures as reinforcements was achieved at temperatures as high as 2600 degrees C, offering advantages of convenience, high throughput, and energy efficiency. The samples after high-temperature homoepitaxy showed increased G/D peak area ratios in the Raman spectra, enhanced mechanical properties, and improved thermal properties, meeting the requirements of various applications.