Comparative XRD, Raman, and TEM Study on Graphitization of PBO-Derived Carbon Fibers

被引：196

作者：

Beatriz Vazquez-Santos, M. ^{[1
]}

Geissler, Erik ^{[2
]}

Laszlo, Krisztina ^{[3
]}

Rouzaud, Jean-Noel ^{[4
]}

Martinez-Alonso, Amelia ^{[1
]}

Tascon, Juan M. D. ^{[1
]}

机构：

[1] CSIC, Inst Nacl Carbon, INCAR, E-33080 Oviedo, Spain

[2] Univ Grenoble 1, Lab Interdisciplinaire Phys, UMR 5588, F-38402 St Martin Dheres, France

[3] Budapest Univ Technol & Econ, Dept Phys Chem & Mat Sci, H-1521 Budapest, Hungary

[4] Ecole Normale Super, Geol Lab, CNRS, UMR 8538, F-75321 Paris 5, France

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2012年 / 116卷 / 01期

关键词：

TRANSMISSION ELECTRON-MICROSCOPY; P-PHENYLENE BENZOBISOXAZOLE; X-RAY-DIFFRACTION; SIZE L-A; CATALYTIC GRAPHITIZATION; THERMAL-DEGRADATION; OPTICAL MICROSCOPY; SPECTROSCOPY; GRAPHITE; MICROTEXTURE;

D O I：

10.1021/jp2084499

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carbon fibers, obtained by carbonizing poly(p-phenylene benzobisoxazole) (PBO) fibers at 900 degrees C, graphitize extensively upon heat treatment at higher temperatures (2700 degrees 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 degrees 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.

引用

页码：257 / 268

页数：12

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