Ao SUN , Nuo XU , Yue-fan WANG , Jia-qi XU , Zi-zheng SHI , Xiao ZHANG
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Abstract
The use of carbon nanotube fibers (CNTFs), which are macroscopic assemblies of billions of carbon nanotubes (CNTs), has long been limited by their disordered and loose microstructures. As a result, their mechanical properties are several orders of magnitude lower than those of single CNTs. In recent years, with the innovation in CNTF preparation techniques, not only has continuous mass production at the industrial level been achieved, but the cost has also significantly decreased to levels close to those of high-performance commercial fibers due to the economies of scale. High performance CNTFs have been developed that have a high strength, moderate to high modulus, high electrical conductivity, high thermal conductivity, high flexibility, and low density. These advanced CNTFs have not only surpassed the characteristic properties of benchmark commercial fibers but have also been widely explored for use in structural materials for aerospace, conductive cables, and novel mechanical energy harvesting. During the last decade there has been significant improvements in CNTF preparation techniques, post-synthesis treatment and its mechanisms, understanding the failure mechanisms of structures developed from them, and many new applications have been explored. The review attempts to understand the key problems in transferring properties from the nanoscale to the macroscale and discusses feasible ways to approach the superior properties of CNTs in order to widen the future applications of CNTFs.
期刊介绍：
New Carbon Materials is a scholarly journal that publishes original research papers focusing on the physics, chemistry, and technology of organic substances that serve as precursors for creating carbonaceous solids with aromatic or tetrahedral bonding. The scope of materials covered by the journal extends from diamond and graphite to a variety of forms including chars, semicokes, mesophase substances, carbons, carbon fibers, carbynes, fullerenes, and carbon nanotubes. The journal's objective is to showcase the latest research findings and advancements in the areas of formation, structure, properties, behaviors, and technological applications of carbon materials. Additionally, the journal includes papers on the secondary production of new carbon and composite materials, such as carbon-carbon composites, derived from the aforementioned carbons. Research papers on organic substances will be considered for publication only if they have a direct relevance to the resulting carbon materials.
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