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论文类型：期刊论文

发表时间：2013-09-01

发表刊物：CARBON

收录刊物：SCIE、EI、Scopus

卷号：61

页面范围：386-394

ISSN号：0008-6223

摘要：Two-dimensional carbon belts (CBs) made of carbon nanofibers (CNFs) supported on a carbon foam (CFoam) substrate have been synthesized by a procedure involving carbonization of polyamic acid (PAA)/Ni(NO3)(2) solution impregnated polyurethane foam in flowing H-2 at 700 degrees C and catalytic chemical vapor deposition (CCVD) using C2H4 as a carbon source and SO2 as a promoter. The CBs, which are hundreds of micrometers in length, several micrometers in width and tens of nanometers in thickness, are made of CNFs with a low degree of graphitization that array with an orientation roughly parallel to the longitudinal axis of the CBs. The results show that the mass ratio of Ni to PAA, a H-2 atmosphere in carbonization and SO2 in CCVD process are the three key factors governing the growth of the CBs. (C) 2013 Elsevier Ltd. All rights reserved.