L'effet Hall de carbones pregraphitiques trait& B moins de 1000ยฐC n'a pu &tre CtudiC jusqu'8 present. Les Cchantillons se presentent gencralement sous une forme trks poreuse, il n'est g&e possible d'obtenir des parallClCpipCdes suffisament compacts et bien d&finis. Par une methode deja d&rite\* des
Problems in the electrovalency of graphite
โ Scribed by A.R. Ubbelohde
- Publisher
- Elsevier Science
- Year
- 1964
- Tongue
- English
- Weight
- 383 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0008-6223
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โฆ Synopsis
The use of well-orientated graphite is discussed for the controlled formation of derivatives. Both electrochemical and related processes of intercalation can now be followed with precision and in considerable detail. As one outcome, obstructions preventing the swelling of graphite, which accompanies compound formation, can be evaluated quantitatively.
Electrochemical, thermodynamic and mechanical methods of estimating intercalations, swelling pressures and thresholds have been investigated for well-orientated graphites. The relevance of these findings is discussed in relation to various theoretical problems, and to practical applications such as those involving the durability of graphite electrodes.
CONTROLLED FORMATION OF INTERCALATION COMPOUNDS
๐ SIMILAR VOLUMES
Coals of increasing rank contain a mixture of solid fragments and particles which look liquid. The first ones are a fractions insoluble in boiling anthracene-oil, the others are /I fractions (soluble in anthracene-oil but insoluble in toluene). The content of fi fraction passes by a maximum as softe