Nanostructure evolution in heat-treated porous carbons derived from PBO polymer

被引：5

作者：

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

Martinez-Alonso, Amelia ^{[1
]}

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

Rouzaud, Jean-Noel ^{[2
]}

Rochas, Cyrille ^{[3
]}

Geissler, Erik ^{[4
]}

Laszlo, Krisztina ^{[5
]}

机构：

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

[2] Ecole Normale Super, UMR CNRS 8538, Lab Geol, F-75231 Paris 5, France

[3] CERMAV CNRS, F-38041 Grenoble 9, France

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

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

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 536卷

关键词：

Carbon; PBO; Graphitization; X-ray scattering; TEM;

D O I：

10.1016/j.jallcom.2011.10.072

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：

The aim of this work was to investigate the effect of porosity development on the subsequent thermal evolution from turbostratic to lamellar nanostructure in carbon fibres derived from poly(p-phenylene benzobisoxazole) (PBO). To this end, PBO chars were activated with carbon dioxide to a burn-off degree of 51 wt.% and then heat-treated at various temperatures comprised between 1600 and 2700 degrees C. The resulting materials were characterised by X-ray scattering and transmission electron microscopy. The observed graphitization mechanism is similar to that previously observed for non-activated materials, despite the fact that more than 51 wt.% of the carbon matrix was removed by the activation stage. (c) 2011 Elsevier B.V. All rights reserved.

引用

页码：S464 / S468

页数：5

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