From highly efficient impurity-free CNT synthesis to DWNT forests, CNT solids, and super-capacitors

Kenji Hata

doi:10.1117/12.716279

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21 February 2007 From highly efficient impurity-free CNT synthesis to DWNT forests, CNT solids, and super-capacitors

Kenji Hata

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Proceedings Volume 6479, Quantum Sensing and Nanophotonic Devices IV; 64791L (2007) https://doi.org/10.1117/12.716279
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

Abstract

We demonstrate an extremely efficient chemical vapour deposition synthesis of single-walled carbon nanotubes where the activity and lifetime of the catalysts are enhanced by controlling the ambient of the CVD furnace, a growth mode we call "Super Growth" [1]. The enhanced catalytic activity of super growth results in massive growth of super-dense and vertically-aligned single-walled nanotubes forests with heights up to 2.5 millimeters. In addition, these SWNT forests were easily separated from the catalysts, producing the most pure SWNT material (over 99.98%) ever made, through an all-dry process without any purification. Moreover, patterned highly organized intrinsic single-walled nanotube structures were successfully fabricated. Super Growth simultaneously addresses many critical problems such as scalability, purity, and cost, and opens up innumerable opportunities ranging from fundamental research to real applications.

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Kenji Hata "From highly efficient impurity-free CNT synthesis to DWNT forests, CNT solids, and super-capacitors", Proc. SPIE 6479, Quantum Sensing and Nanophotonic Devices IV, 64791L (21 February 2007); https://doi.org/10.1117/12.716279

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