Enhancement of electric double layer capacitance of carbon nanotubes by gallium ion irradiation

Journal Article · Tue Feb 15 00:00:00 EST 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3553448· OSTI ID:21538102

Rai, Padmnabh; Pandey, Srikrishna; Menemparabath, Minimol; Sug Kim, Young; Nikolaev, Pavel; Arepalli, Sivaram ^[1]; Lee, Il Ha ^[2]

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1. Department of Energy Science, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of)
2. Sungkyunkwan Advanced Institute of Nanotechnology, Suwon 440-746 (Korea, Republic of)

Irradiation by 30 keV Ga{sup +} ions was used to create defects in multiwalled carbon nanotubes. Damage to the graphitic structure of the nanotube wall resulting from ion irradiation was observed by a transmission electron microscope which was accompanied by corresponding changes in Raman spectra. It was found that ion irradiation at 2 x 10{sup 13} ions/cm{sup 2} cumulative dose increases the electric double layer capacitance of a multiwalled carbon nanotube electrode by a factor of 2.3, followed by a decrease and saturation at higher (2 x 10{sup 14} and 4 x 10{sup 14} ions/cm{sup 2}) doses. This might be a trade-off between the enhancement caused by the tip opening and lowering of the capacitance due to amorphization of carbon nanotubes.

• OSTI ID: 21538102
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 4; Other Information: DOI: 10.1063/1.3553448; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
AMORPHOUS STATE
CAPACITANCE
CARBON
CRYSTAL DEFECTS
DEPOSITION
ELECTROCHEMISTRY
ELECTRODES
GALLIUM IONS
GRAPHITE
ION BEAMS
IRRADIATION
KEV RANGE 10-100
LAYERS
MASS BALANCE
NANOTUBES
PHYSICAL RADIATION EFFECTS
RAMAN SPECTRA
SATURATION
SPATIAL DISTRIBUTION
TRANSMISSION ELECTRON MICROSCOPY
BEAMS
CHARGED PARTICLES
CHEMISTRY
CRYSTAL STRUCTURE
DISTRIBUTION
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
ELEMENTS
ENERGY RANGE
IONS
KEV RANGE
MICROSCOPY
MINERALS
NANOSTRUCTURES
NONMETALS
PHYSICAL PROPERTIES
RADIATION EFFECTS
SPECTRA