Super-Robust, Lightweight, Conducting Carbon Nanotube Blocks Cross-Linked by De-fluorination
Source abstract
Abstract
We produced large binder-free multi-walled carbon nanotube (MWNT) blocks from fluorinated MWNTs using thermal heating and a compressing method in vacuo. This technique resulted in the formation of covalent MWNT networks generated by the introduction of sp(3)-hybridized carbon atoms that cross-link between nanotubes upon de-fluorination. The resulting carbon nanotube blocks are lighter than graphite, can be machined and polished, and possess average bending strengths of 102.2 MPa, a bending modulus of 15.4 GPa, and an electrical conductivity of 2.1 x 10(2) S/cm. Although each nanotube exhibits a random structure in these blocks, the mechanical properties are 3 times higher than those obtained for commercial graphite. On the basis of theoretical molecular dynamics simulations, a model is presented for the nanotube interconnecting mechanism upon de-fluorination.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Graphene research and applications · Fiber-reinforced polymer composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan
Institute of Fluid Science, Tohoku University, 2-2-1, Katahira, Aoba-ku, Sendai 980-8577, Japan
Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University, Aoba 6-6-11, Aramaki, Aoba-ku, Sendai 980-8579, Japan
Research Group General Chemistry, Free University of Brussels, Pleinlaan 2, B-1050 Brussels, Belgium
Advanced Materials Department, IPICyT, Camino a la Presa San José 2055, Lomas 4a seccion 78216, San Luis Potosí, SLP, México
Stella Chemifa Corporation, 1-41, Rinkai-cho, Izumiotsu, Osaka 595-0075, Japan
Institute for Materials Research, Tohoku University, 2-2-1, Katahira, Aoba-ku, Sendai 980-8577, Japan
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