27. Recent developments in glassy carbon fabrication

Bradshaw, W.; Pinoli, Pietro; Camahort, J.L.

doi:10.1016/0008-6223(69)90556-9

Cited by 5 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The anodic peak current is also used to evaluate the specific electrochemical surface area, which is obtained by Equation 1 34 : (1) where: SESA values are shown in Figure 6. These values are in good agreement with Friedrich et al 25 , for samples heat treated at temperatures of 1000 °C and 1100 °C, considering the area measurements of the foam stems.…”

Section: Electrochemical Behaviormentioning

confidence: 99%

“…Reticulated Vitreous Carbon (RVC) is an important material known by its high mechanical resistance, porosity, biocompatibility and relatively high electrical conductivity. These properties have been extensively explored in the last decades in many applications, for example, in thermal coating of airspace vehicles 1,2 , bony prostheses 3 , heart valves [4][5][6] , molecular sieves 7 and hydrogenation catalyst supports 8 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrochemical reversibility of reticulated vitreous carbon electrodes heat treated at different carbonization temperatures

Gonçalves¹,

Rezende²,

Takahashi

et al. 2006

Mat. Res.

View full text Add to dashboard Cite

Electrochemical response of ferri/ferrocyanide redox couple is discussed for a system that uses reticulated vitreous carbon (RVC) three dimensional electrodes prepared at five different Heat Treatment Temperatures (HTT) in the range of 700 °C to 1100 °C. Electrical resistivity, scanning electron microscopy and X ray Diffraction analyses were performed for all prepared samples. It was observed that the HTT increasing promotes an electrical conductivity increasing while the Bragg distance d002 decreases. The correlation between reversibility behavior of ferri/ferrocyanide redox couple and both surface morphology and chemical properties of the RVC electrodes demonstrated a strong dependence on the HTT used to prepare the RVC

show abstract

Section: Electrochemical Behaviormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrochemical reversibility of reticulated vitreous carbon electrodes heat treated at different carbonization temperatures

Gonçalves¹,

Rezende²,

Takahashi

et al. 2006

Mat. Res.

View full text Add to dashboard Cite

show abstract

“…The morphological and structural properties of such singular material have been extensively explored in the last decades, mainly due to their wide range of applications, for example, in thermal coating of airships [1,2], bony prostheses [3], heart valves [4][5][6], molecular sieves [7], hydrogenation catalyst supports [8], among others. Besides, RVC has a low density and high electrical conductivity [9] that is very attractive for electrochemical applications as three-dimensional electrode [10].…”

Section: Introductionmentioning

confidence: 99%

Dynamics of defects and surface structure formation in reticulated vitreous carbon

Gonçalves

Rezende

Ferreira³

2006

Braz. J. Phys.

View full text Add to dashboard Cite

Morphological and microstructure properties of reticulated vitreous carbon (RVC) were analyzed by scanning electron microscopy (SEM), micro-Raman spectroscopy and x-ray diffraction (XRD) techniques as a function of heat treatment temperature (HTT). Samples produced in the HTT range of 1000 to 2400 K have demonstrated a strong dependence of HTT in their structural order mainly attributed to the presence of hydrogen and oxygen (heteroatoms), originated from precursor. In this range, the material is changed from pyropolymer to carbon. The polyfurfuryl alcohol precursor has furanic groups and its cure originates methylenical bonds and sulphur atoms. At HTT higher than 1300 K, these atoms are gradually liberated from the material generating a discrete structure ordering.

show abstract

Glasartiger Kohlenstoff

Lersmacher

Lydtin

Knippenberg

1970

Chemie Ingenieur Technik

View full text Add to dashboard Cite

Es wird ein uberblick iiber den derzeitigen Stand der Kenntnis auf dem Gebiet des glasartigen Kohlenstoffes gegeben. Glasartiger Kohlenstoff, eine parakristalline Substanz geringer Dichte (= 1,5 g/cm3)), kann aus bestimmten organischen Polymeren durch Festkorper-Pyrolyse hergestellt werden. Die Kriterien fur die Auswahl geeigneter Ausgangssubstanzen werden genannt und die Eigenschaftsiinderungen dieser Substanzen wiihrend des Pyrolyse-Vorganges diskutiert . Das Endprodukt der Umwandlung, glasartiger Kohlenstoff, zeichnet sich durch eine Reihe bemerkenswerter Eigenschaften wie geringe Dichte, niedrige Helium-Permeabilitat, hohe Festigkeit und gute chemische Resistenz aus und ist fiir viele Anwendungszwecke interessant. I m letztgenannten Falle entsteht durch riiumliche Gruppierung das regulare Diamant-Gitter nach Abb. 1. Die kubische Einheitszelle enthalt acht Kohlenstoff-Atome und hat eine Gitterkonstante a,, = 3,5667 8 bei einer Bindungslange C -C = 1,54 8. Andererseits ist das Kohlenstoff-Atom in der Lage, 0-und x-Bindungen (spz + p) mit drei seiner niichsten Nachbarn einzugehen. Aus diesem Bindungstyp resultiert das Schichtgitter des Graphits, Abb. 2. Fur den hexagonalen Graphit ist die Schichtebenen-Sequenz in Richtung der Fliichennormalen [0001]-Richtung ab, ab, ab, . . . . Abb. 1. Diamant-Struktur. Abb. 2. Graphit-Struktur; 2-Schichten-Struktur mit Elementarzelle (gestrichelt).

show abstract

27. Recent developments in glassy carbon fabrication

Cited by 5 publications

References 0 publications

Electrochemical reversibility of reticulated vitreous carbon electrodes heat treated at different carbonization temperatures

Electrochemical reversibility of reticulated vitreous carbon electrodes heat treated at different carbonization temperatures

Dynamics of defects and surface structure formation in reticulated vitreous carbon

Glasartiger Kohlenstoff

Contact Info

Product

Resources

About