In-situ reduced non-oxidized copper nanoparticles in nanocomposites with extraordinary high electrical and thermal conductivity
| Autor: | Wonjae Jeon, Sung Wng Kim, Seunghyun Baik, C. Muhammed Ajmal, Aby Paul Benny, Seong-Kyun Kim |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Nanoparticle chemistry.chemical_element 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences law.invention Metal Thermal conductivity law General Materials Science Electrical conductor chemistry.chemical_classification Nanocomposite Mechanical Engineering Polymer 021001 nanoscience & nanotechnology Condensed Matter Physics Copper 0104 chemical sciences chemistry Chemical engineering Mechanics of Materials visual_art visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Materials Today. 48:59-71 |
| ISSN: | 1369-7021 |
| DOI: | 10.1016/j.mattod.2021.04.012 |
| Popis: | Copper has received considerable attention for conductive nanocomposites as an alternative to costly silver or gold. However, practical application has been impeded by its susceptibility to oxidation in air. Here we report a novel scalable synthesis method of non-oxidized copper nanoparticles (InSituCuNPs) by pre-mixing and in-situ reducing copper formate-(butylamine-octylamine) complex inside soft epoxy matrix. The solid–liquid phase change of the copper formate complex, during the nanocomposite spark-plasma-sintering process, promotes uniform dispersion. Even the outermost atoms of InSituCuNPs are not oxidized since they are surrounded by the thick matrix polymer as soon as in-situ reduced into metallic copper, resulting in high electrical (15,048 Scm−1) and thermal (28.4 Wm−1K−1) conductivities of the nanocomposite. Furthermore, a small addition of 1-dimensional carbon nanotubes decorated with 0-dimensional copper nanoparticles ( |
| Databáze: | OpenAIRE |
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