Block Copolymer Assisted Fabrication of Graphene/Carbon Nanotube Hybrid Architectures and Their Application in Supercapacitors

2012 ◽  
Vol 1440 ◽  
Author(s):  
Aaron S. George ◽  
Maziar Ghazinejad ◽  
Wei Wang ◽  
Isaac Ruiz ◽  
Mihrimah Ozkan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Carbon Nanotube ◽  
Energy Storage ◽  
Vapor Deposition ◽  
High Surface ◽  
High Surface Area ◽  
Chemical Vapor ◽  
High Energy ◽  
Large Area

AbstractSustainable energy is currently limited by the ability of materials to store energy and deliver it on demand. Allotropes of carbon are attractive for their potential for use in energy storage due to low weight, high chemical stability and low production cost. Carbon nanotubes and graphene can be combined to provide an effective three-dimensional material with high conductivity and high surface area. We demonstrate the use of block copolymers to obtain patterned arrays of iron nanoparticles which give rise to ordered carbon nanotubes with good size distribution. A one-step chemical vapor deposition process for large-area fabrication of the graphene and carbon nanotube hybrid structure is described. Following chemical vapor deposition the hybrid material is demonstrated in a supercapacitor device. The fabricated supercapacitor exhibits high electrical conductivity, and has potential for extremely high energy storage capability.

scholarly journals Hydrogen Storage in High Surface Area Carbon Nanotubes Produced by Catalytic Chemical Vapor Deposition

2004 ◽  
Vol 108 (34) ◽  
pp. 12718-12723 ◽  
Author(s):  
Revathi Bacsa ◽  
Christophe Laurent ◽  
Ryuta Morishima ◽  
Hiroshi Suzuki ◽  
Mikako Le Lay
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Hydrogen Storage ◽  
Surface Area ◽  
Vapor Deposition ◽  
High Surface ◽  
High Surface Area ◽  
Chemical Vapor ◽  
Catalytic Chemical Vapor Deposition

Chemical vapor deposition of nickel-group metals on multiwall carbon nanotubes

2007 ◽  
Vol 85 (10) ◽  
pp. 645-650 ◽  
Author(s):  
Maoqi Feng ◽  
Richard J Puddephatt
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Carbon Nanotube ◽  
Low Temperature ◽  
Vapor Deposition ◽  
Multiwall Carbon Nanotubes ◽  
Chemical Vapor ◽  
Pt Films ◽  
Bimetallic Films ◽  
Multiwall Carbon

Chemical vapor deposition (CVD) of Ni, Pd, and Pt films and of Ni/Pd and Pd/Pt bimetallic films on multiwall carbon nanotubes (MWCNTs) can be effected at low temperature if the nanotubes are pretreated by CVD of titanium carbide. In the absence of the pretreatment, the CVD leads to formation of isolated nanoparticles of the nickel-group metals. The metallized MWCNTs are curved or kinked, as a result of the interaction with the metal. Preliminary oxidation of the carbon nanotubes allows easier metallization, and the bending of the metallated nanotubes is not observed in this case.Key words: Chemical vapor deposition, platinum, palladium, nickel, carbon, nanotube.

Synchronous chemical vapor deposition of large-area hybrid graphene–carbon nanotube architectures

2013 ◽  
Vol 28 (7) ◽  
pp. 958-968 ◽  
Author(s):  
Maziar Ghazinejad ◽  
Shirui Guo ◽  
Wei Wang ◽  
Mihrimah Ozkan ◽  
Cengiz S. Ozkan
Keyword(s):  
Chemical Vapor Deposition ◽  
Carbon Nanotube ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Large Area ◽  
Image Position

Abstract

Synthesis of Controllably Grown Carbon Nanotubes Interconnects

2007 ◽  
Vol 1018 ◽  
Author(s):  
Seon Woo Lee ◽  
David Katz ◽  
Avi Kornblit ◽  
Daniel Lopez ◽  
Haim Grebel
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Carbon Nanotube ◽  
Vapor Deposition ◽  
Low Temperatures ◽  
Chemical Vapor ◽  
Single Wall Carbon Nanotube ◽  
Single Wall Carbon ◽  
Multi Wall Carbon Nanotube

AbstractIntra-connects (bridges spanning across in plane electrodes), which were made of carbon nanotube (CNT), were fabricated by CO Plasma Enhanced Chemical Vapor Deposition (PECVD), ethanol CVD and pyrolitic CO CVD. CO PECVD has been used with CO/H2 mixture at relatively low temperatures. Its yield was relatively low though and the quality of CNT intra-connect was not to par. Ethanol CVD resulted in many more multi-wall carbon nanotube (MWCNT) than single-wall carbon nanotube (SWCNT) intra-connects. CO CVD was the most effective and simplest way to grow CNT interconnects among the three methods, yielding well-aligned and straight SWCNT bridges.

Synthesis of Carbon Nanotubes from Silicalite-1-Coated Substrates

2012 ◽  
Vol 512-515 ◽  
pp. 275-279
Author(s):  
Wei Zhao ◽  
Ashish Pokhrel ◽  
Hyun Sung Kim ◽  
Hyung Tae Kim ◽  
Ik Jin Kim
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Carbon Nanotube ◽  
Iron Oxide ◽  
Vapor Deposition ◽  
Rf Sputtering ◽  
Chemical Vapor ◽  
Confined Spaces ◽  
Synthesis Of Carbon Nanotubes ◽  
Si Wafer

Assembled monolayer of silicalite-1 (AMS) microcrystals on Si wafer for carbon nanotube (CNT) growth has been prepared by the rubbing method. Iron oxide (α-Fe2O3, hematite) catalyst films were deposited onto silicate-1 monolayers from a Fe2O3 target by radio frequency (rf)-sputtering. This approach has the potential for producing well-aligned CNTs with controlled diameter from predesigned silicalite-1 templates by catalytic chemical vapor deposition (CCVD). Silicalite-1 monolayer oriented with faces parallel to Si wafer showed only the planes in the forms {0 k 0} lines at (020), (040), (060), (080) and (0100) by XRD. The formation and growth of CNTs by CCVD were achieved on the pores of silicate-1 crystals whereby the pores can be defined as confined spaces (channels, 5.60 Å) in nanometer dimensions acting as a template for a fine dispersion of well-defined Fe2O3 (10-15 nm) particles.

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