Graphitic Carbon Nanofibers Synthesized by the Chemical Vapor Deposition (CVD) Method and Their Electrochemical Performances in Supercapacitors

D H Jurcakova; X Li; Z Zhu; Roland De Marco; G Q Lu

doi:10.1021/ef8004306

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Graphitic Carbon Nanofibers Synthesized by the Chemical Vapor Deposition (CVD) Method and Their Electrochemical Performances in Supercapacitors

Journal article

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Graphitic Carbon Nanofibers Synthesized by the Chemical Vapor Deposition (CVD) Method and Their Electrochemical Performances in Supercapacitors

D H Jurcakova, X Li, Z Zhu, Roland De Marco and G Q Lu

Energy & Fuels, Vol.22(6), p.4139–4145

2008

DOI: https://doi.org/10.1021/ef8004306

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Abstract

graphitic carbon nanofibers

chemical vapor deposition

electrochemical performance

Graphitic carbon nanofibers were synthesized by chemical vapor deposition of methane and acetylene on the γ-alumina-supported nickel catalyst. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption/desorption, X-ray diffraction (XRD), and Raman spectroscopy were used to examine the structure and the graphitic degree of carbons. The results show that carbons derived from methane consist of a more graphitic structure compared to acetylene-based carbons. The temperature and the catalyst loading affected the graphitic structure further; i.e., the higher the temperature and the catalyst loadings, the better the graphitic structure. The electrochemical performance of synthesized carbons in 1 M H2SO4 revealed that the methane-based carbons show very stable charge/discharge performance in the whole range of investigated current loadings (viz., 0.05 and 3 A g-1), owing to the graphitic structure and thus resulting from the good charge propagation, particularly at high loads. On the other hand, acetylene-based carbons provide greater gravimetric capacitance values as a result of structural defects, but consequently, the capacitance drops at high current loads

Details

Title: Graphitic Carbon Nanofibers Synthesized by the Chemical Vapor Deposition (CVD) Method and Their Electrochemical Performances in Supercapacitors
Authors: D H Jurcakova (Author) - University of Queensland
X Li (Author) - University of Queensland
Z Zhu (Author) - University of Queensland
Roland De Marco (Author) - Curtin University of Technology
G Q Lu (Author) - University of Queensland
Publication details: Energy & Fuels, Vol.22(6), p.4139–4145
Publisher: American Chemical Society
Date published: 2008
DOI: 10.1021/ef8004306
ISSN: 0887-0624
Organisation Unit: University of the Sunshine Coast, Queensland; Office of the Deputy Vice-Chancellor (Research and Innovation)
Language: English
Record Identifier: 99449229402621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Energy & Fuels; Engineering, Chemical