Ultrathin carbon nanotube fibrils of high electrochemical capacitance.
We have assembled single-wall carbon nanotubes into ultrathin long fibrils using a dielectrophoretic technique and studied the mechanical and electrochemical properties of carbon nanotube fibrils. The diameter of the fibrils can be controlled in the range of 200 nm to 2 mum, and the length can reach as long as 1 cm. The obtained fibrils have a tensile strength of about 65 MPa, electrical conductivity ranging from 80 to 200 S cm(-1), and specific capacitance more than 200 F g(-1). The results indicate that these ultrathin long carbon nanotube fibrils are of great potential for applications as conductive wires and probe electrodes.
Ma
Jun
J
1D Nanomaterials Research Group, National Institute for Materials Science, Tsukuba, Ibaraki, Japan.
Tang
Jie
J
Zhang
Han
H
Shinya
Norio
N
Qin
Lu-Chang
LC
D025802:Electric Capacitance; D004553:Electric Conductivity; D004563:Electrochemistry; D004586:Electrophoresis; D008855:Microscopy, Electron, Scanning; D037742:Nanotubes, Carbon / Q000737:chemistry*; D013314:Stress, Mechanical; D013718:Tensile Strength
D037742:Nanotubes, Carbon