Macroscopic yarns of FeCl3-intercalated collapsed carbon nanotubes with high doping and stability

Identification of Collapsed Carbon Nanotubes in High-Strength Fibers Spun from Compositionally Polydisperse Aerogels

“…17 More recently, fibers with collapsed CNTs were shown to stabilize intercalants, enabling large increases in electrical conductivity through hole doping via the formation of air-stable intercalation compounds. 18 Despite the interest in producing macroscopic ensembles with a high fraction of collapsed CNTs, the challenge has proven elusive. One reason is the difficulty to distinguish the subtle molecular-scale differences between collapsed and non-collapsed CNTs, particularly using methods that can be applied to macroscopic fibers with millions of CNTs.…”

“…Indeed, various reports show that fibers with some evidence of collapsed CNTs can reach a tensile strength of 2 GPa/SG, ,, above those of some commercial carbon fibers, or thermal conductivity above that of copper . More recently, fibers with collapsed CNTs were shown to stabilize intercalants, enabling a large increase in electrical conductivity through hole doping via the formation of air-stable intercalation compounds …”

Influence of metal-coordinating comonomers on the coordination structure and binding in magnetic poly(ionic liquid)s

“…71 In other FeCl 3 based material systems, a similar peak at ∼530 eV has been attributed to the formation of FeClO due to storage of materials in ambient air conditions. 76,77 Small amounts of Na were still observed in the survey spectra for several of the metal copolymers (Fig. S7–S11†), the peak at ∼536 eV is assigned to the Na KLL Auger peaks.…”

Efficient Fabrication of High-Quality Single-Walled Carbon Nanotubes and Their Macroscopic Conductive Fibers

“…Single-walled carbon nanotubes (SWCNTs) have attracted intense research interest due to their unique one-dimensional tubular structure and extraordinary physical and chemical properties . The experimentally measured Young’s modulus and tensile strength of SWCNTs have reached 1470 and 45 GPa, respectively .…”

“…S ingle-walled carbon nanotubes (SWCNTs) have attracted intense research interest due to their unique onedimensional tubular structure and extraordinary physical and chemical properties. 1 The experimentally measured Young's modulus and tensile strength of SWCNTs have reached 1470 and 45 GPa, respectively. 2 With an electrical conductivity of ∼10 7 S m −1 3 and ultrahigh current-carrying capability several orders of magnitude higher than that of copper, SWCNTs are highly attractive for use in electrical conduction.…”