Structural and transport properties of bromine intercalated carbon fibers

V. Gupta, R. B. Mathur, O. P. Bahl, A. Marchand, S. Flandrois

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Intercalation of P-120 pitch-based fibers with bromine, from the vapor phase or liquid bromine, has been investigated. The maximum weight uptake was 20-25%, nearly independent of intercalation temperature. Intercalated samples were characterized by X-ray diffraction, Raman scattering and differential scanning calorimetry. Thermogravimetry experiments showed that a large amount (up to 50%) of bromine remains trapped in the fibers up to temperatures in the order of 1000 °C. Measurements of the transport properties (electrical conductivity, magnetoresistance and Hall coefficient) gave estimates of the concentration and mobilities of the charge carriers and of the charge transfer from carbon to bromine (0.5-0.6 electronic charge per Br2).

Original languageBritish English
Pages (from-to)1633-1639
Number of pages7
Issue number11
StatePublished - 1995


  • bromine intercalation
  • Carbon fibers
  • charge carriers
  • charge transfer


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