Structure of Glassy Carbon

Jenkins, G.M.; Kawamura, Kazuro

doi:10.1038/231175a0

Cited by 336 publications

(186 citation statements)

References 4 publications

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“…New models for glassy carbon that incorporate non-hexagonal rings 60 seem to provide a better basis for understanding their properties than older models such as that of Jenkins and Kawamura. 32 There also seem to be good reasons for believing that PANderived carbon fibers and other high-strength carbon fibers may be fullerene-related, and further studies of these materials using HRTEM and other techniques would be valuable.…”

Section: Discussionmentioning

confidence: 99%

“…32 However, models of this kind, which are intended to represent the structure of non-graphitizing carbons following high-temperature heat treatment, have serious weaknesses, as noted earlier. Such models consist of curved and twisted graphene sheets enclosing irregularly shaped pores.…”

Section: Early Modelsmentioning

confidence: 99%

“…32,58,59 This model, illustrated in Figure 15, is based on the assumption that the molecular orientation of the polymeric precursor material is memorized to some extent after carbonization. Thus, the structure bears some resemblance to that of a polymer, in which the "fibrils" are very narrow curved and twisted ribbons of graphitic carbon.…”

Section: Glassy Carbonmentioning

confidence: 99%

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New Perspectives on the Structure of Graphitic Carbons

Harris

2005

Critical Reviews in Solid State and Materials Sciences

366

251

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Graphitic forms of carbon are important in a wide variety of applications, ranging from pollution control to composite materials, yet the structure of these carbons at the molecular level is poorly understood. The discovery of fullerenes and fullerene-related structures such as carbon nanotubes has given a new perspective on the structure of solid carbon. This review aims to show how the new knowledge gained as a result of research on fullerene-related carbons can be applied to well-known forms of carbon such as microporous carbon, glassy carbon, carbon fibers, and carbon black.

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Section: Discussionmentioning

confidence: 99%

Section: Early Modelsmentioning

confidence: 99%

Section: Glassy Carbonmentioning

confidence: 99%

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New Perspectives on the Structure of Graphitic Carbons

Harris

2005

Critical Reviews in Solid State and Materials Sciences

366

251

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“…15). The structure of GC has been long debated 16,17 , but is now generally accepted to consist of nearly 100% sp 2 bonding. Type-I GC, which is produced at temperatures o2,000°C, consists mainly of randomly distributed curved graphene layer fragments 10,18 .…”

mentioning

confidence: 99%

Nanoarchitectured materials composed of fullerene-like spheroids and disordered graphene layers with tunable mechanical properties

et al. 2015

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Type-II glass-like carbon is a widely used material with a unique combination of properties including low density, high strength, extreme impermeability to gas and liquid and resistance to chemical corrosion. It can be considered as a carbon-based nanoarchitectured material, consisting of a disordered multilayer graphene matrix encasing numerous randomly distributed nanosized fullerene-like spheroids. Here we show that under both hydrostatic compression and triaxial deformation, this high-strength material is highly compressible and exhibits a superelastic ability to recover from large strains. Under hydrostatic compression, bulk, shear and Young's moduli decrease anomalously with pressure, reaching minima around 1-2 GPa, where Poisson's ratio approaches zero, and then revert to normal behaviour with positive pressure dependences. Controlling the concentration, size and shape of fullerene-like spheroids with tailored topological connectivity to graphene layers is expected to yield exceptional and tunable mechanical properties, similar to mechanical metamaterials, with potentially wide applications.

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“…8 Carbon electrodes have been widely used in electroanalysis due to a wide potential window, a low background current and chemical inertness as compared with metal electrodes. [9][10][11] Moreover, the chemical modification of carbon surfaces has been of significant interest in numerous fields, such as electroanalytical chemistry. 12,13 It has recently been found that the reduction potential of oxygen can be significantly moved the positive direction by using a carbon alloy with nitrogen 14 and nitrogen-containing graphite.…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Detection of Oxalic Acid by Using Glassy Carbon Electrodes with Covalently Attached Nitrogen-containing Functional Groups

et al. 2015

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We report on a novel voltammetric detection of oxalic acid by using glassy carbon electrodes with covalently attached nitrogen-containing functional groups prepared by stepwise electrolysis. A glassy carbon electrode electrooxidized in an ammonium carbamate solution was electroreduced at -1.0 V (vs. Ag/AgCl) in 1.0 M sulfuric acid for a long time. We found that the electrocatalytic oxidation wave of oxalic acid obtained by this modified glassy carbon electrode was moved to a more negative potential region than that obtained by a platinum electrode in an acidic medium. A good linearity for the peak current signals was observed in the concentration range from 0.1 to 50 mM.

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Structure of Glassy Carbon

Cited by 336 publications

References 4 publications

New Perspectives on the Structure of Graphitic Carbons

New Perspectives on the Structure of Graphitic Carbons

Nanoarchitectured materials composed of fullerene-like spheroids and disordered graphene layers with tunable mechanical properties

Voltammetric Detection of Oxalic Acid by Using Glassy Carbon Electrodes with Covalently Attached Nitrogen-containing Functional Groups

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