Nitrogen plasma functionalization of carbon nanotubes for supercapacitor applications

Hussain, Shahzad; Amade, Roger; Jover, Èric; Bertran, Enric

doi:10.1007/s10853-013-7579-z

Cited by 80 publications

(45 citation statements)

References 47 publications

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“…John and Arumugam (2015) used open-ended doped CNTs that were prepared by pyrolysis method as the supercapacitor electrode materials and showed that this electrode have superior electrochemical performance in comparison with pristine CNTs. Nitrogen-doped CNTs can show pseudocapacitive behaviour which is investigated elsewhere (Hussain et al 2013;Yun et al 2012). Another important issue on the nitrogen doping of CNTs is the amount of nitrogen content that have a noticeable impact on their electrochemical properties .…”

Section: Introductionmentioning

confidence: 99%

Plasma-assisted nitrogen doping of VACNTs for efficiently enhancing the supercapacitor performance

et al. 2016

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Nitrogen doping of vertically aligned carbon nanotubes (VACNTs) using plasma-enhanced chemical vapour deposition has been investigated to improve the supercapacitance performance of CNTs. Incorporating electrochemical measurements on the open-ended nitrogen-doped CNTs, showed the achievement of 6 times improvement in the capacitance value. For nitrogen-doped CNTs on silicon substrate, specific capacitance of 60 F g -1 was obtained in 0.5 M KCl solution, with capacity retention ratio above 90 % after cycled at 0.1 A g -1 for 5000 cycles. Using this sample, a symmetric supercapacitance was fabricated which showed the power density of 37.5 kW kg -1 . The facile fabrication approach and its excellent capacitance improvement, propose it as an efficient technique for enhancing the supercapacitance performance of the carbon-based electrodes.

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Section: Introductionmentioning

confidence: 99%

Plasma-assisted nitrogen doping of VACNTs for efficiently enhancing the supercapacitor performance

et al. 2016

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“…Furthermore, it is rather difficult to control and very harsh for the graphitic walls of CNTs [25][26][27]. Our previous studies show that the CNTs surface can be cleaned and crafted with different functional groups by controlling the conditions of a plasma treatment (rf plasma power, gas composition and pressure) [28,29].…”

Section: Introductionmentioning

confidence: 99%

Growth and functionalization of carbon nanotubes on quartz filter for environmental applications

Amade

Hussain²,

Romero‐Ocaña³

et al. 2014

J Environ Eng Ecol Sci

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Background: Air pollution has become an important issue worldwide due to its adverse health effects. Among the different air contaminants, volatile organic compounds (VOCs) are liquids or solids with a high vapor pressure at room temperature that are extremely dangerous for human health. Removal of these compounds can be achieved using nanomaterials with tailored properties such as carbon nanotubes. Methods: Vertically-aligned multiwall carbon nanotubes (CNTs) were successfully grown on quartz filters by means of plasma enhanced chemical vapor deposition (PECVD). Furthermore, a plasma treatment was performed in order to modify the surface properties of the CNTs. The adsorption/desorption processes of three chlorinated compounds (trichloroethylene, 1,2-dichlorobenzene and chloroform) on the CNTs were studied using mass spectrometry measurements with a residual gas analyzer. Results: The adsorption capability of the CNTs increased after functionalization of their surface with a water plasma treatment. In addition, it was found that the presence of aromatic rings, water solubility and polarity of the VOCs play an important role on the adsorption/desorption kinetics at the CNTs surface. Conclusions: This study demonstrates the applicability of CNTs deposited on quartz filters for the removal or selective detection of volatile organic compounds (VOCs). The presence of aromatic rings in VOCs results in π-stacking interactions with a significant increase of their adsorption. On the other hand, it was found that CNTs surface interactions increase with water solubility and polarity of the VOC.

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“…Early studies involving plasma treatments of CNTs focused on the effects on structure, density of states, work function , and reactivity , or successfully aimed to introduce a variety of polymers or functional groups onto the nanotubes surfaces . More recent studies often explore plasma functionalised CNTs directly in the context of specific applications, such as electrode materials in supercapacitors or reinforcing fillers in polymer matrices .…”

Section: Introductionmentioning

confidence: 99%

Sulfur impregnation of multi-walled carbon nanotubes via SF₆/NH₃plasma exposure

Muench

Akinoglu

Giersig

2017

Phys. Status Solidi RRL

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Plasma treatments are established methods to functionalise carbon nanotubes (CNTs) and modify their surface structure. This paper presents a mild glow‐discharge plasma treatment of aligned arrays of multi‐walled carbon nanotubes employing sulfur hexafluoride (SF6), ammonia (NH3), and their mixtures as process gases. For the latter, sulfur was detected at the tip and sidewalls of the nanotubes via energy‐dispersive X‐ray spectroscopy, while electron microscopy served as method to verify the structural integrity of the CNTs after the plasma treatment. This approach provides the basis for an easy and quick alternative to existing sulfur functionalisation methods of MWCNTs. Furthermore, the proposed method can conveniently be applied to carbon nanotube arrays on substrate while preserving their structure and alignment.

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Nitrogen plasma functionalization of carbon nanotubes for supercapacitor applications

Cited by 80 publications

References 47 publications

Plasma-assisted nitrogen doping of VACNTs for efficiently enhancing the supercapacitor performance

Plasma-assisted nitrogen doping of VACNTs for efficiently enhancing the supercapacitor performance

Growth and functionalization of carbon nanotubes on quartz filter for environmental applications

Sulfur impregnation of multi-walled carbon nanotubes via SF₆/NH₃plasma exposure

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Nitrogen plasma functionalization of carbon nanotubes for supercapacitor applications

Cited by 80 publications

References 47 publications

Plasma-assisted nitrogen doping of VACNTs for efficiently enhancing the supercapacitor performance

Plasma-assisted nitrogen doping of VACNTs for efficiently enhancing the supercapacitor performance

Growth and functionalization of carbon nanotubes on quartz filter for environmental applications

Sulfur impregnation of multi-walled carbon nanotubes via SF6/NH3plasma exposure

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Product

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Sulfur impregnation of multi-walled carbon nanotubes via SF₆/NH₃plasma exposure