کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1267570 972360 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of the carbon nanotube type on the thermoelectric properties of CNT/Nafion nanocomposites
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of the carbon nanotube type on the thermoelectric properties of CNT/Nafion nanocomposites
چکیده انگلیسی

The effect of different carbon nanotube (CNT) types on the thermoelectric performance of CNT/polymer nanocomposites was studied. Three different kinds of CNTs, single- (SWCNTs), few- (FWCNTs) and multi-walled CNTs (MWCNTs), were effectively dispersed in an aqueous solution of Nafion. The electrical properties of the CNT/Nafion nanocomposites were primarily affected by the CNTs since the Nafion acts as an electrically non-conducting matrix, while the thermal conductivity of the nanocomposites was dominated by the Nafion mainly due to weak van der Waals interaction. In this way, electrical and thermal transport can be separated. In all three types of CNTs, both the electrical conductivity and Seebeck coefficient increased as the concentration of CNTs was increased. While the electrical conductivity depends on the type of CNT, the behavior of the Seebeck coefficient was relatively insensitive of the CNT type at high CNT loading. This indicates that high-energy-charges can participate in transport processes irrespective of the type of CNT. It is suggested that FWCNTs and MWCNTs are preferred over SWCNTs in CNT/Nafion nanocomposites for thermoelectric applications.

Figure optionsDownload as PowerPoint slideHighlights
► Thermoelectric performance of carbon nanotube (CNT)/Nafion nanocomposites.
► The effect of CNT types on the thermoelectric performance of the composites.
► The electrical conductivity depends on the type of CNTs, while the Seebeck coefficient was relatively independent.
► High-energy-charges can participate in transport processes irrespective of the type of CNT in the nanocomposites at high enough concentration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Organic Electronics - Volume 12, Issue 12, December 2011, Pages 2120–2125
نویسندگان
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