Electrochemical studies of single-wall carbon nanotubes in aqueous solutions

Barisci, Joseph N.; Wallace, Gordon G.; Baughman, Ray H.

doi:10.1016/s0022-0728(00)00179-0

Cited by 238 publications

(172 citation statements)

References 10 publications

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“…[49][50][51] Consistent with those reported by Li et al, they also observed a couple of broad redox peaks at ca. -0.15 V (vs. Ag/AgCl, 3 M NaCl) at the SWNTs, which were attributed to the functional oxygenated groups.…”

Section: Electrochemistry Of Cntssupporting

confidence: 86%

Electrochemistry and Electroanalytical Applications of Carbon Nanotubes: A Review

et al. 2005

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Carbon nanotubes (CNTs) have been proved to be a novel type of nanostructure with unique structural, electronic and mechanical properties and have drawn extensive attention since their discovery. [1][2][3] Research over the past decade has revealed that the CNTs constitute a new form of carbon materials that are finding striking applications in many fields, such as energy conversion and storage, 4,5 electromechanical actuators, 6,7 chemical sensing 8 and so forth. Generally, the nanotubes can be divided into two categories: single-walled carbon nanotubes (SWNTs) and multi-walled carbon nanotubes (MWNTs). The former can be regarded as a graphene cylinder formed by rolling seamlessly a single graphene sheet along an (m,n) lattice vector in the sheet. The (m,n) indices is a central parameter governing the metallicity and chirality of the tubes. The latter is composed of coaxial multilayer graphene tubes with interlayer space of 0.34 nm. The diameter varies from 0.4 nm to 3 nm for the SWNTs and from 1.4 nm to 100 nm for the MWNTs (typical transmission electron microscopic images of the CNTs are shown in Fig. 1).Due to the unique physical and chemical properties and thus the striking applications in various research and industrial fields, the CNTs have drawn extensive interest over the past decade. To date, we have witnessed great successes in the synthesis of the CNTs and in understanding of their chemical and physical properties. Several excellent reviews concerning these issues have appeared in the literature. 9,10 Currently, increasing interests are being focused on the construction of the CNT-based functional nanodevices with novel properties for practical applications.On the other hand, the CNTs represent a new kind of carbonbased materials and are superior to other kinds of carbon materials commonly used in electrochemistry, such as glassy carbon (GC), graphite and diamond, mainly in the special structural features and unique electronic properties. As a result, besides their striking applications in other fields, study of the CNT electrochemistry thus far has revealed that these unique properties of the CNTs substantially make them useful for electrochemical investigations, e.g., electrocatalysis, direct electrochemistry of proteins and electroanalytical applications such as electrochemical sensors and biosensors. 11,12 The electroanalytical applications of the CNTs for construction of This review addresses recent developments in electrochemistry and electroanalytical chemistry of carbon nanotubes (CNTs). CNTs have been proved to possess unique electronic, chemical and structural features that make them very attractive for electrochemical studies and electrochemical applications. For example, the structural and electronic properties of the CNTs endow them with distinct electrocatalytic activities and capabilities for facilitating direct electrochemistry of proteins and enzymes from other kinds of carbon materials. These striking electrochemical properties of the CNTs pave the way to CNT-based bioelectrochemist...

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Section: Electrochemistry Of Cntssupporting

confidence: 86%

Electrochemistry and Electroanalytical Applications of Carbon Nanotubes: A Review

et al. 2005

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“…We can rule out that the retardation of charging is due to slow faradaic pseudocapacitance. This process would require protons according to a generic Equation (3): [35] CO H e À 6COH…”

Section: Cyclic Voltammetrymentioning

confidence: 99%

Ionic Liquid for in situ Vis/NIR and Raman Spectroelectrochemistry: Doping of Carbon Nanostructures

Kavan

Dunsch

2003

ChemPhysChem

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1-butyl-3-methylimidazolium tetrafluoroborate (an ionic liquid) is an advantageous electrolyte for the study of charge-transfer reactions at single-walled carbon nanotubes (SWCNTs) and fullerene peapods (C 60 @SWCNT). Compared to traditional electrolyte solutions, this medium offers a broader window of electrochemical potentials to be applied, and favorable optical properties for in situ Vis/NIR and Raman spectroelectrochemistry of nano-carbon species. The electrochemistry of both nanotubes and peapods is dominated by their capacitive double-layer charging. Vis/NIR spectroelectrochemistry confirms the charging-induced bleaching of transitions between Van Hove singularities. At high positive potentials, new optical transitions were activated in partly filled valence band. The bleaching of optical transitions is mirrored by the quenching of resonance Raman scattering in the region of tube-related modes. The Raman frequency of the tangential displacement mode of SWCNT shifts to blue upon both anodic and cathodic charging in the ionic liquid. The Raman modes of intratubular C 60 exhibit a considerable intensity increase upon anodic doping of peapods.

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“…For example, carbon nanotubes have been formed into electrodes for Li-ion secondary batteries [1][2][3][4][5], for hydrogen storage in fuel cells [6], and for supercapacitors [7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

High power density supercapacitors using locally aligned carbon nanotube electrodes

Yeh²,

2005

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TitleHigh power density supercapacitors using locally aligned carbon nanotube electrodes Abstract A new form of thin films formed by multi-walled carbon nanotubes exhibiting high packing density and local alignment were fabricated using a highly concentrated colloidal suspension of carbon nanotubes. Electrical double layer capacitors built from these film electrodes exhibited a close to rectangular cyclic voltammogram even at a high scan rate of 1000 mV s −1 , and produced very high specific power density of about 30 kW kg −1 , ideal for surge-power delivery applications. The preparation procedure is very simple, and does not require any binders. It has potential for highly efficient manufacturing of high power density supercapacitors and other similar electronic devices.

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Electrochemical studies of single-wall carbon nanotubes in aqueous solutions

Cited by 238 publications

References 10 publications

Electrochemistry and Electroanalytical Applications of Carbon Nanotubes: A Review

Electrochemistry and Electroanalytical Applications of Carbon Nanotubes: A Review

Ionic Liquid for in situ Vis/NIR and Raman Spectroelectrochemistry: Doping of Carbon Nanostructures

High power density supercapacitors using locally aligned carbon nanotube electrodes

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