Van der Waals Welding of Carbon Nanotubes with Near‐Limit High Strength
The strength of carbon nanotube (CNT) bundles and fibers is generally much lower than that of single CNTs, the short length of CNT components results in the assembly strength can only be contributed by the weak shearing interaction between CNTs. Here, the welding of CNTs by a fast chemical-vapor-deposition self-assembly (FCVDS) technique using TiO<sub>2</sub> nanoparticles as the solder is reported. It is simple, fast, pressure-free, applicable to ambient conditions, and can weld samples with macroscale length. The welded junctions have a mechanical strength approaching the tensile strength of a single CNT. Whereas the interface interaction between TiO<sub>2</sub> and CNTs is only contributed by Van der Waals forces, avoiding the destruction of the defect-free structure of CNTs. The solder mass can be only ≈1 wt% of welded CNTs.
Authors
- Fei Wei (ORCID: https://orcid.org/0000-0002-1422-9784)
- Rufan Zhang (ORCID: https://orcid.org/0000-0003-1774-0550)
- Jun Gao (ORCID: https://orcid.org/0000-0002-3847-0839)
- Yunxiang Bai (ORCID: https://orcid.org/0000-0002-8434-6150)
- Hongjie Yue (ORCID: https://orcid.org/0000-0002-1960-5427)
- Yukang Zhu
- Mengxiong Liu
- Shijun Wang (ORCID: https://orcid.org/0000-0002-5654-8118)
Institutions
- Chinese Academy of Sciences (CN)
- National Center for Nanoscience and Technology (CN)
- Tsinghua University (CN)
Publication Details
- Journal
- Advanced Materials
- Published
- 2025-06-29
- DOI
- https://doi.org/10.1002/adma.202502638
- Citations
- 2
- Primary Topic
- Carbon Nanotubes in Composites
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China