Studies of carbon nanotubes synthesized by chemical vapor deposition method and its supercapacitor

• Main Authors: Tung-Feng Hsieh, 謝東風
• Other Authors: Chi-min Shu
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/80476385830715115453

博士 === 雲林科技大學 === 工程科技研究所博士班 === 99 === The aim of this thesis using chemical vapor deposition (CVD) to synthesize multi-walled carbon nanotubes (MWCNTs) is to examine the dependence of the catalyst components, synthesis temperatures, and carbon sources, respectively. The production of MWVNTs prepared by Mo-Al-Co and La-Fe-Ni catalyst was achieved through the direct pyrolysis of two hydrocarbon sources, methane and n-hexane. This study is also shown how to control the diameter well and high product yield of carbon nanotubes under the conditions of carbon sources such as methane and n-hexane, hydrogen carrier gas flow rate, and catalyst powder size. The nanotubes obtained to be characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), energy dispersive spectroscopy (EDS) and Raman spectroscopy analysis. The carbon nanotube supercapacitor was also studied in this thesis, because it is suitable for numerous applications such as energy storage in hybrid electric vehicles and power electronics.