Kim, Seo Gyun Heo, So Jeong Kim, Jeong-Gil Sangone, Kim Lee, Dongju Kim, Minkook Kim, Nam Dong Kim, Dae-Yoon Hwang, Jun Yeon Chae, Han Gi Ku, Bon-Cheol 2024-01-19T11:02:46Z 2024-01-19T11:02:46Z 2022-09-02 2022-10 2198-3844 https://pubs.kist.re.kr/handle/201004/114518 Individual carbon nanotubes (CNT) and graphene have unique mechanical and electrical properties; however, the properties of their macroscopic assemblies have not met expectations because of limited physical dimensions, the limited degree of dispersion of the components, and various structural defects. Here, a state-of-the-art assembly for a novel type of hybrid fiber possessing the properties required for a wide variety of multifunctional applications is presented. A simple and effective multidimensional nanostructure of CNT and graphene oxide (GO) assembled by solution processing improves the interfacial utilization of the components. Flexible GOs are effectively intercalated between nanotubes along the shape of CNTs, which reduces voids, enhances orientation, and maximizes the contact between elements. The microstructure is finely controlled by the elements content ratio and dimensions, and an optimal balance improves the mechanical properties. The hybrid fibers simultaneously exhibit exceptional strength (6.05 GPa), modulus (422 GPa), toughness (76.8 J g(-1)), electrical conductivity (8.43 MS m(-1)), and knot strength efficiency (92%). Furthermore, surface and electrochemical properties are significantly improved by tuning the GO content, further expanding the scope of applications. These hybrid fibers are expected to offer a strategy for overcoming the limitations of existing fibers in meeting the requirements for applications in the fiber industry. English Wiley-VCH Verlag Ultrastrong Hybrid Fibers with Tunable Macromolecular Interfaces of Graphene Oxide and Carbon Nanotube for Multifunctional Applications Article 10.1002/advs.202203008 1 Advanced Science, v.9, no.29 Advanced Science 9 29 Y scie scopus 000843393800001 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article X-RAY-SCATTERING HIERARCHICAL STRUCTURE COMPOSITE FIBER STRENGTH DISPERSIONS RHEOLOGY PHASE DENSIFICATION carbon nanotube fibers graphene oxide hybrid fibers multidimensional nanostructure wet spinning