EDLC characteristics of CNTs grown on nanoporous alumina templates

Jung, Mi; Kim, Hyun Gi; Lee, Jae-Kyoung; Joo, Oh‐Shim; Mho, Sun‐il

doi:10.1016/j.electacta.2004.02.057

Cited by 47 publications

(28 citation statements)

References 18 publications

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“…Electrochemical Double Layer Capacitors Jung et al [109] used carbon nanotubemodified PAA as electrode materials for electrochemical double layer capacitors (EDLC). These authors reported the preparation of carbon nanotubes embedded in free-standing porous alumina, together with the results of its EDLC properties investigation.…”

Section: Porous Anodic Alumina To Create Nanodevicesmentioning

confidence: 99%

Nanostructured Materials Synthesized Using Electrochemical Techniques

Oliveira

Freitas

Mattoso

et al. 2008

Nanostructured Materials in Electrochemistry

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The visualization and/or handling of atom clusters, or even individual atoms, has been achieved during the past 25 years. One of the most practical instruments for this purpose is the tunneling microscope, which was invented during the 1980s. On such a small scale, materials properties are not the same as those of a macroscopicsized substance. The first occasion on which a scientist proposed atom handling was in 1959, when Professor Richard Feynman [1], during a lecture at the California Institute Technology, suggested that in the near future engineers would be able to take atoms and place them exactly where they wanted to, without -of courseinfringing the laws of Nature. Today, Professor Feynmans lecture, which was entitled There is Plenty of Room at the Bottom, is considered a milestone of the current technological and scientific era.We can define nanoscience as the study of the phenomena and handling of structures on the atomic, molecular and macromolecular scale, where at least one dimension is significantly less than the others. And nanotechnology includes the design, characterization, and production of devices and systems on a nanometer scale. This definition of nanotechnology is wide-ranging, it is not a specific technology, all of the techniques based on physics, chemistry, biology, materials science and engineering -and/or using computers -leading to the development of materials and tools in such a way that the common point among them is the reduced dimension in which they operate. Among these applications are: increased storage and processing capacity for computers; the creation of new mechanisms for drug delivery; and the production of materials which are both lighter and more resistant than metals and plastics. Additional benefits of nanotechnology developments include energy saving, environmental protection, and the more efficient use of increasingly scarce raw materials.Today, these new investigations into material fabrication are focused mainly on nanostructured devices or, at least, microdevices. The most-often used technique for j117 Nanostructured Materials in Electrochemistry. Edited by Ali Eftekhari

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Section: Porous Anodic Alumina To Create Nanodevicesmentioning

confidence: 99%

Nanostructured Materials Synthesized Using Electrochemical Techniques

Oliveira

Freitas

Mattoso

et al. 2008

Nanostructured Materials in Electrochemistry

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“…Porous anodic alumina membranes (AAM) are always used to synthesize various kinds of nanostructured systems because they have disconnected and parallel nano-pores with uniform aperture. Polymer [4], semiconductor [5], metal [6] and carbon [7] nanowires and nanotubes have been successfully prepared using AAM as template. Template synthesis methods, mainly including electrodeposition [8], chemical deposition [9][10][11], chemical polymerization [12] and sol-gel [13] method, are mostly used to synthesize nano arrays.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Cu nano-arrays by template method and their characterizations

Ren

Huang

Zhang

et al. 2007

Front. Mater. Sci. China

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Cu nanotubes and nanowires were fabricated by electroless deposition using porous aluminum oxide membrane as template in coating bath at room temperature. The images of Cu nanotubes and nanowires are obtained by transmission electron microscopy (TEM). X-ray diffractometry (XRD) is employed to study the morphology. Results indicate that the success of fabrication depends on the reducing process of pore treatment. The outer diameter of Cu nanotubes can be controlled by adjusting the aperture of anodic alumina membranes (AAM) template, and the thickness of the tube wall can be controlled by deposition time. The morphology of Cu nanotubes and nanowires are polycrystalline.

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“…The specific capacitance of the CNT electrode has to be improved. Several attempts have been made to increase the capacitance of the CNTs for the EDLC electrode material [2][3][4]. The usage of the nanoporous alumina templates is proposed as a novel method to increase the capacitances of the CNT electrode by preparing the CNTs with uniform diameters [4].…”

Section: Introductionmentioning

confidence: 99%

“…Several attempts have been made to increase the capacitance of the CNTs for the EDLC electrode material [2][3][4]. The usage of the nanoporous alumina templates is proposed as a novel method to increase the capacitances of the CNT electrode by preparing the CNTs with uniform diameters [4]. The CNTs of homogeneous size grown on the well-ordered porous alumina templates with 90 nm pore diameter in the 1567-1739/$ -see front matter Ó 2005 Elsevier B.V. All rights reserved.…”

Section: Introductionmentioning

confidence: 99%