Title:
Carbon Nanotubes: Chemical Vapor Deposition Synthesis and Application in Electrochemical Double Layer Supercapacitors

dc.contributor.advisor Carter, W. Brent
dc.contributor.advisor Ready, W. Jud
dc.contributor.author Turano, Stephan Parker en_US
dc.contributor.committeeMember Snyder, Bob
dc.contributor.committeeMember Wang, Zhong Lin
dc.contributor.department Materials Science and Engineering en_US
dc.date.accessioned 2005-07-28T17:53:12Z
dc.date.available 2005-07-28T17:53:12Z
dc.date.issued 2005-03-08 en_US
dc.description.abstract Carbon nanotubes (CNTs) have become a popular area of materials science research due to their outstanding material properties coupled with their small size. CNTs are expected to be included in a wide variety of applications and devices in the near future. Among these devices which are nearing mass production are electrochemical double layer (ECDL) supercapacitors. The current methods to produce CNTs are numerous, with each synthesis variable resulting in changes in the physical properties of the CNT. A wide array of studies have focused on the effects of specific synthesis conditions. This research expands on earlier work done using bulk nickel catalyst, alumina supported iron catalyst, and standard chemical vapor deposition (CVD) synthesis methods. This work also investigates the effect of an applied voltage to the CVD chamber during synthesis on the physical nature of the CNTs produced. In addition, the work analyzes a novel nickel catalyst system, and the CNTs produced using this catalyst. The results of the effects of synthesis conditions on resultant CNTs are included. Additionally, CNT based ECDL supercapacitors were manufactured and tested. Scanning electron microscope (SEM) analysis reveals that catalyst choice, catalyst thickness, synthesis temperature, and applied voltage have different results on CNT dimensions. Nanotube diameter distribution and average diameter data demonstrate the effect of each synthesis condition. Additionally, the concept of an alignment parameter is introduced in order to quantify the effect of an electric field on CNT alignment. CNT based ECDL supercapacitors testing reveals that CNTs work well as an active material when a higher purity is achieved. The molarity of the electrolyte also has an effect on the performance of CNT based ECDL supercapacitors. On the basis of this research, we conclude that CNT physical dimensions can be moderately controlled based on the choice of synthesis conditions. Also, the novel nickel catalyst system investigated in this research has potential to produce bulk quantities of CNT under specific conditions. Finally, purified CNTs are recommended as a suitable active material for ECDL supercapacitors. en_US
dc.description.degree M.S. en_US
dc.format.extent 58337174 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/6854
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Nanomaterials en_US
dc.subject Nanotechnology
dc.subject ECDL
dc.subject Electrochemical Double Layer Supercapacitors
dc.subject Supercapacitor
dc.subject CVD
dc.subject Chemical vapor deposition
dc.subject CNTs
dc.subject Carbon nanotubes
dc.subject.lcsh Nickel catalysts en_US
dc.subject.lcsh Carbon en_US
dc.subject.lcsh Chemical vapor deposition Synthesis en_US
dc.subject.lcsh Electric double layer en_US
dc.subject.lcsh Electrolytic capacitors Design and construction en_US
dc.subject.lcsh Nanotubes Synthesis en_US
dc.title Carbon Nanotubes: Chemical Vapor Deposition Synthesis and Application in Electrochemical Double Layer Supercapacitors en_US
dc.type Text
dc.type.genre Thesis
dspace.entity.type Publication
local.contributor.advisor Carter, W. Brent
local.contributor.corporatename School of Materials Science and Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 962d2ffa-8219-498e-949c-524333215dd6
relation.isOrgUnitOfPublication 21b5a45b-0b8a-4b69-a36b-6556f8426a35
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
turano_stephan_p_200505_mast.pdf
Size:
55.63 MB
Format:
Adobe Portable Document Format
Description: