A comparative study of the electrochemical properties of carbon nanotubes and carbon black
Samo za registrovane korisnike
2009
Autori
Obradović, MajaVuković, Goran D.
Stevanović, Sanja
Panić, Vladimir
Uskoković, Petar
Kowal, Andrzej
Gojković, Snežana Lj.
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Two samples of commercial multi-walled carbon nanotubes (Sigma-Aldrich and Sun Nanotech) and a sample of carbon black (Vulcan XC-72R) were investigated in raw state and after the activation in nitric and sulfuric acid by ultrasound agitation. Atomic force microscopy revealed that activated Sigma-Aldrich nanotubes are straight with corrugated walls (bamboo-like structure), while Sun Nanotech nanotubes are tortuous with smooth walls. Fourier transform infrared spectroscopy showed that abundance of oxygen-containing functional groups was formed on both Sigma-Aldrich and Sun Nanotech carbon nanotubes, as well as on carbon black surfaces. Electrochemical properties were studied by cyclic voltammetry and electrochemical impedance spectroscopy. It was found that the electrochemically active surface area of all carbon samples is expanded, charge storage ability is enhanced and the electron-transfer kinetics, probed by Fe(CN)(6)(3-)/Fe(CN)(6)(4-) redox couple, is promoted upon activation. The c...haracteristics of carbon nanotubes were superior to Carbon black. Morphology of the carbon nanotubes was found to be important; nanotubes with corrugated walls showed faster electron-transfer and pseudocapacitive redox kinetics than nanotubes with smooth walls. This was explained by the higher proportion of edge and defect sites, which are known as more electrochemically active than the walls of uniform graphene structure.
Ključne reči:
Carbon nanotubes / Electrochemistry / Electrochemical impedance spectroscopy / Atomic force microscopyIzvor:
Journal of Electroanalytical Chemistry, 2009, 634, 1, 22-30Izdavač:
- Elsevier Science Sa, Lausanne
Finansiranje / projekti:
DOI: 10.1016/j.jelechem.2009.07.001
ISSN: 1572-6657
WoS: 000270118100003
Scopus: 2-s2.0-68949186637
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Obradović, Maja AU - Vuković, Goran D. AU - Stevanović, Sanja AU - Panić, Vladimir AU - Uskoković, Petar AU - Kowal, Andrzej AU - Gojković, Snežana Lj. PY - 2009 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1420 AB - Two samples of commercial multi-walled carbon nanotubes (Sigma-Aldrich and Sun Nanotech) and a sample of carbon black (Vulcan XC-72R) were investigated in raw state and after the activation in nitric and sulfuric acid by ultrasound agitation. Atomic force microscopy revealed that activated Sigma-Aldrich nanotubes are straight with corrugated walls (bamboo-like structure), while Sun Nanotech nanotubes are tortuous with smooth walls. Fourier transform infrared spectroscopy showed that abundance of oxygen-containing functional groups was formed on both Sigma-Aldrich and Sun Nanotech carbon nanotubes, as well as on carbon black surfaces. Electrochemical properties were studied by cyclic voltammetry and electrochemical impedance spectroscopy. It was found that the electrochemically active surface area of all carbon samples is expanded, charge storage ability is enhanced and the electron-transfer kinetics, probed by Fe(CN)(6)(3-)/Fe(CN)(6)(4-) redox couple, is promoted upon activation. The characteristics of carbon nanotubes were superior to Carbon black. Morphology of the carbon nanotubes was found to be important; nanotubes with corrugated walls showed faster electron-transfer and pseudocapacitive redox kinetics than nanotubes with smooth walls. This was explained by the higher proportion of edge and defect sites, which are known as more electrochemically active than the walls of uniform graphene structure. PB - Elsevier Science Sa, Lausanne T2 - Journal of Electroanalytical Chemistry T1 - A comparative study of the electrochemical properties of carbon nanotubes and carbon black EP - 30 IS - 1 SP - 22 VL - 634 DO - 10.1016/j.jelechem.2009.07.001 ER -
@article{ author = "Obradović, Maja and Vuković, Goran D. and Stevanović, Sanja and Panić, Vladimir and Uskoković, Petar and Kowal, Andrzej and Gojković, Snežana Lj.", year = "2009", abstract = "Two samples of commercial multi-walled carbon nanotubes (Sigma-Aldrich and Sun Nanotech) and a sample of carbon black (Vulcan XC-72R) were investigated in raw state and after the activation in nitric and sulfuric acid by ultrasound agitation. Atomic force microscopy revealed that activated Sigma-Aldrich nanotubes are straight with corrugated walls (bamboo-like structure), while Sun Nanotech nanotubes are tortuous with smooth walls. Fourier transform infrared spectroscopy showed that abundance of oxygen-containing functional groups was formed on both Sigma-Aldrich and Sun Nanotech carbon nanotubes, as well as on carbon black surfaces. Electrochemical properties were studied by cyclic voltammetry and electrochemical impedance spectroscopy. It was found that the electrochemically active surface area of all carbon samples is expanded, charge storage ability is enhanced and the electron-transfer kinetics, probed by Fe(CN)(6)(3-)/Fe(CN)(6)(4-) redox couple, is promoted upon activation. The characteristics of carbon nanotubes were superior to Carbon black. Morphology of the carbon nanotubes was found to be important; nanotubes with corrugated walls showed faster electron-transfer and pseudocapacitive redox kinetics than nanotubes with smooth walls. This was explained by the higher proportion of edge and defect sites, which are known as more electrochemically active than the walls of uniform graphene structure.", publisher = "Elsevier Science Sa, Lausanne", journal = "Journal of Electroanalytical Chemistry", title = "A comparative study of the electrochemical properties of carbon nanotubes and carbon black", pages = "30-22", number = "1", volume = "634", doi = "10.1016/j.jelechem.2009.07.001" }
Obradović, M., Vuković, G. D., Stevanović, S., Panić, V., Uskoković, P., Kowal, A.,& Gojković, S. Lj.. (2009). A comparative study of the electrochemical properties of carbon nanotubes and carbon black. in Journal of Electroanalytical Chemistry Elsevier Science Sa, Lausanne., 634(1), 22-30. https://doi.org/10.1016/j.jelechem.2009.07.001
Obradović M, Vuković GD, Stevanović S, Panić V, Uskoković P, Kowal A, Gojković SL. A comparative study of the electrochemical properties of carbon nanotubes and carbon black. in Journal of Electroanalytical Chemistry. 2009;634(1):22-30. doi:10.1016/j.jelechem.2009.07.001 .
Obradović, Maja, Vuković, Goran D., Stevanović, Sanja, Panić, Vladimir, Uskoković, Petar, Kowal, Andrzej, Gojković, Snežana Lj., "A comparative study of the electrochemical properties of carbon nanotubes and carbon black" in Journal of Electroanalytical Chemistry, 634, no. 1 (2009):22-30, https://doi.org/10.1016/j.jelechem.2009.07.001 . .