Comparative XRD, Raman, and TEM study on graphitization of PBO-derived carbon fibers

M. Beatriz Vázquez-Santos, Erik Geissler, Krisztina László, Jean Noël Rouzaud, Amelia Martínez-Alonso, Juan M.D. Tascón

Research output: Contribution to journalArticle

95 Citations (Scopus)

Abstract

Carbon fibers, obtained by carbonizing poly(p-phenylene benzobisoxazole) (PBO) fibers at 900 °C, graphitize extensively upon heat treatment at higher temperatures (2700 °C). In this work, XRD, Raman spectroscopy, and HRTEM are used to monitor the structural and nanostructural transformations of the carbon material under heat-treatment at several temperatures in the interval 900-2800 °C. These different techniques provide complementary information, especially regarding the spatial resolution they achieve. They highlight a specific nonconventional mode of graphitization for this unexpectedly graphitizable precursor. The reliability in the determination of L a crystallite sizes from these three techniques is compared and discussed. The existence of four steps in the graphitization of PBO-derived carbon fibers is inferred.

Original languageEnglish
Pages (from-to)257-268
Number of pages12
JournalJournal of Physical Chemistry C
Volume116
Issue number1
DOIs
Publication statusPublished - Jan 12 2012

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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    Vázquez-Santos, M. B., Geissler, E., László, K., Rouzaud, J. N., Martínez-Alonso, A., & Tascón, J. M. D. (2012). Comparative XRD, Raman, and TEM study on graphitization of PBO-derived carbon fibers. Journal of Physical Chemistry C, 116(1), 257-268. https://doi.org/10.1021/jp2084499