Carbon nanotube wires with continuous current rating exceeding 20 Amperes
| Autor: | Stephen M. Ubnoske, Andrew R. Bucossi, Brian J. Landi, Colleen C. Lawlor, Ivan Puchades, Matthew J. Ganter, Christopher M. Schauerman, Karen J. Soule, Jamie E. Rossi, Cory D. Cress |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Doping General Physics and Astronomy Nanotechnology 02 engineering and technology Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Nanolithography Nanoelectronics law Thermal Electrical measurements Composite material 0210 nano-technology Thermal analysis Current density |
| Zdroj: | Journal of Applied Physics. 122:025101 |
| ISSN: | 1089-7550 0021-8979 |
| Popis: | A process to fabricate carbon nanotube (CNT) wires with diameters greater than 1 cm and continuous current carrying capability exceeding 20 A is demonstrated. Wires larger than 5 mm are formed using a multi-step radial densification process that begins with a densified CNT wire core followed by successive wrapping of additional CNT material to increase the wire size. This process allows for a wide range of wire diameters to be fabricated, with and without potassium tetrabromoaurate (KAuBr4) chemical doping, and the resulting electrical and thermal properties to be characterized. Electrical measurements are performed with on/off current steps to obtain the maximum current before reaching a peak CNT wire temperature of 100 °C and before failure, yielding values of instantaneous currents in excess of 45 A for KAuBr4 doped CNT wires with a diameter of 6 mm achieved prior to failure. The peak temperature of the wires at failure (∼530 °C) is correlated with the primary decomposition peak observed in thermal gra... |
| Databáze: | OpenAIRE |
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