Barium-Functionalized Multiwalled Carbon Nanotube Yarns As Low-Work-Function Thermionic Cathodes

doi:10.1063/1.2909593

IMECH-IR > 力学所知识产出(1956-2008)

	Barium-Functionalized Multiwalled Carbon Nanotube Yarns As Low-Work-Function Thermionic Cathodes
	Xiao Lin; Liu P; Liu L; Jiang KL; Feng XF; Wei Y; Qian L; Fan Shoushan; Zhang TH(张泰华); Xiao, L (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
发表期刊	Applied Physics Letters
	2008
ISSN	0003-6951
摘要	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 1.73-2.06 eV and thermionic current density that exceeded 185 mA/cm(2) in a field of 850 V/5 mm at 1317 K. The barium-functionalized yarns had high tensile strength of up to 420 MPa and retained strength of similar to 250 MPa after a 2 h activation process. (C) 2008 American Institute of Physics.
关键词	Emission
DOI	10.1063/1.2909593
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000255117100083
关键词[WOS]	EMISSION
WOS研究方向	Physics
WOS类目	Physics, Applied
引用统计	被引频次：34[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/26072
专题	力学所知识产出(1956-2008)
通讯作者	Xiao, L (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
推荐引用方式 GB/T 7714	Xiao Lin,Liu P,Liu L,et al. Barium-Functionalized Multiwalled Carbon Nanotube Yarns As Low-Work-Function Thermionic Cathodes[J]. Applied Physics Letters,2008.
APA	Xiao Lin.,Liu P.,Liu L.,Jiang KL.,Feng XF.,...&Xiao, L .(2008).Barium-Functionalized Multiwalled Carbon Nanotube Yarns As Low-Work-Function Thermionic Cathodes.Applied Physics Letters.
MLA	Xiao Lin,et al."Barium-Functionalized Multiwalled Carbon Nanotube Yarns As Low-Work-Function Thermionic Cathodes".Applied Physics Letters (2008).

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