Flexible, Ultralight, Porous Superconducting Yarns Containing Shell-Core Magnesium Diboride-Carbon Nanotube Nanofibers

Flexible, Ultralight, Porous Superconducting Yarns Containing Shell-Core Magnesium Diboride-Carbon Nanotube Nanofibers

Magnesium‐diboride‐coated carbon nanotube arrays are synthesized by templating carbon‐nanotube aerogel sheets with boron and then converting the boron to MgB2. The resultant MgB2‐CNT sheets are twisted into flexible, light‐weight yarns that have a superconducting transition around 37.8 K and critica...

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Veröffentlicht in:Advanced materials (Weinheim) 2014-11, Vol.26 (44), p.7510-7515
Hauptverfasser: Bykova, Julia S., Lima, Márcio Dias, Haines, Carter S., Tolly, Derrick, Salamon, M. B., Baughman, Ray H., Zakhidov, Anvar A.
Format: Artikel
Sprache:eng
Schlagworte:
Borides
Boron
carbon nanotubes
Density
Magnesium
Magnesium compounds
magnesium diboride
nanofiber
nanowire
Superconductivity
superconductor
Wire
Yarns
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Zusammenfassung:Magnesium‐diboride‐coated carbon nanotube arrays are synthesized by templating carbon‐nanotube aerogel sheets with boron and then converting the boron to MgB2. The resultant MgB2‐CNT sheets are twisted into flexible, light‐weight yarns that have a superconducting transition around 37.8 K and critical current and critical field comparable with those of existing MgB2 wires, but have about 20 times lower density than bulk MgB2.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201402794