Recently, a research team led by Professor Wang Jiannong from the School of Mechanical and Power Engineering at East China University of Science and Technology has achieved remarkable progress in the continuous production and performance enhancement of carbon nanotube fibers. The resulting fibers exhibit exceptional strength, flexibility, and electrical conductivity. These findings have been published in prestigious international academic journals, highlighting the significance of this breakthrough.
Since their discovery, carbon nanotubes have been regarded as one of the strongest, stiffest, and most resilient molecular structures ever created. They are considered ideal candidates for use in field-effect transistors, transparent electrodes, nanostructures, functional composites, lithium-ion batteries, and supercapacitors due to their outstanding thermal and electrical conductive properties. However, translating these impressive characteristics into practical applications requires assembling carbon nanotubes into macroscopic materials like fibers. This has become a major challenge and a shared goal for scientists and industries worldwide.
To address this challenge, Professor Wang Jiannong’s team introduced an innovative approach using floating chemical vapor deposition to continuously produce large-scale carbon nanotube cylinders. In an open atmosphere, these cylinders were directly broken down into fibers using water, followed by mechanical rolling. This method significantly enhanced the fiber's density and structural integrity. As a result, they successfully developed high-performance carbon nanotube fibers with tensile strengths ranging from 3.76 to 5.53 GPa, elongation between 8% and 13%, and excellent electrical conductivity. This marks the first time that such high levels of strength, toughness, and conductivity have been achieved in a single process, surpassing traditional high-strength carbon fibers in performance.
This advancement not only demonstrates the potential of carbon nanotube fibers in various advanced technologies but also opens new possibilities for future developments in flexible electronics, energy storage, and smart materials. With further optimization, these fibers could revolutionize multiple industries, making them a key component in next-generation materials and devices.
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