DOI: 10.1063/1.2909593. Barium-functionalized multiwalled carbon nanotube yarns as low-work-function thermionic cathodes

Barium-functionalized multiwalled carbon nanotube yarns as low-work-function thermionic cathodes

10.1063/1.2909593

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Barium-functionalized multiwalled carbon nanotube yarns were fabricated by drawing and twisting multiwalled carbon nanotube forests through a solution containing barium nitrate. After heat activation under vacuum, the functionalized yarns were enriched in barium oxide due to the high surface-to-volume ratio of the nanotubes. The cathodes exhibited good thermionic properties, with a work function as low as 1.73–2.06eV and thermionic current density that exceeded 185mA∕cm2 in a field of 850V∕5mm at 1317K. The barium-functionalized yarns had high tensile strength of up to 420MPa and retained strength of ∼250MPa after a 2h activation process.

Bibliography

Xiao, L., Liu, P., Liu, L., Jiang, K., Feng, X., Wei, Y., Qian, L., Fan, S., & Zhang, T. (2008). Barium-functionalized multiwalled carbon nanotube yarns as low-work-function thermionic cathodes. Applied Physics Letters, 92(15).

Authors 9

Lin Xiao (first)
Peng Liu (additional)
Liang Liu (additional)
Kaili Jiang (additional)
Xiaofeng Feng (additional)
Yang Wei (additional)
Li Qian (additional)
Shoushan Fan (additional)
Taihua Zhang (additional)

References 14 Referenced 25

10.1063/1.1790597 / Appl. Phys. Lett. (2004)
10.1038/419801a / Nature (London) (2002)
10.1126/science.1104276 / Science (2004)
10.1002/adma.200502528 / Adv. Mater. (Weinheim, Ger.) (2006)
10.1063/1.2236465 / Appl. Phys. Lett. (2006)
10.1103/PhysRevB.73.235412 / Phys. Rev. B (2006)
{'first-page': '64', 'volume-title': 'The Oxide-Coated Cathode', 'year': '1951', 'key': '2023070218120872900_c7'} / The Oxide-Coated Cathode (1951)
10.1063/1.2198093 / Appl. Phys. Lett. (2006)
10.1016/j.carbon.2006.10.014 / Carbon (2007)
10.1103/PhysRevB.76.045423 / Phys. Rev. B (2007)
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Dates

Type	When
Created	17 years, 4 months ago (April 15, 2008, 7:47 p.m.)
Deposited	2 years, 1 month ago (July 2, 2023, 2:12 p.m.)
Indexed	4 weeks ago (July 30, 2025, 6:50 a.m.)
Issued	17 years, 4 months ago (April 14, 2008)
Published	17 years, 4 months ago (April 14, 2008)
Published Online	17 years, 4 months ago (April 15, 2008)
Published Print	17 years, 4 months ago (April 14, 2008)

Funders 0

None

BibTeX

@article{Xiao_2008, title={Barium-functionalized multiwalled carbon nanotube yarns as low-work-function thermionic cathodes}, volume={92}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.2909593}, DOI={10.1063/1.2909593}, number={15}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Xiao, Lin and Liu, Peng and Liu, Liang and Jiang, Kaili and Feng, Xiaofeng and Wei, Yang and Qian, Li and Fan, Shoushan and Zhang, Taihua}, year={2008}, month=apr }

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