Dispersion and field emission properties of multi-walled carbon nanotubes by high-energy milling

被引：10
作者：
Darsono, Nono [1 ]
Yonathan, Parlindungan [1 ]
Yoon, Dang-Hyok [1 ]
Kim, Jaemyung [2 ]
Kim, Yoonjin [2 ]
机构：
[1] Yeungnam Univ, Sch Mat Sci & Engn, Kyongsan 712749, South Korea
[2] Samsung SDI, Corporate R&D Ctr, Elect Mat Dev Team, Yongin 449577, South Korea
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2008年 / 110卷 / 2-3期
关键词：
nanostructuress; field emission; Raman spectroscopy and scattering;
D O I：
10.1016/j.matchemphys.2008.02.016
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Multi-walled carbon nanotubes (MWNTs) were high-energy milled for 2 h in texanol after a polycarboxylic acid polymeric dispersant had been added in order to enhance the dispersion. The degree of MWNT dispersion was significantly enhanced by high-energy milling compared to the intact sample, which increased the density of surface-exposed MWNTs with a screen-printed paste. However, the emission properties of high-energy milled MWNTs did not show such a high emission current density relative to their increased surface-exposed density. Further investigation using Raman spectroscopy and X-ray diffraction evidenced the milling-induced MWNT damage, which explained the relatively lower emission current density of high-energy milled MWNTs. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：363 / 369
页数：7
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