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Enhanced Electrical Potential of Thermoelectric Power Waves by Sb2Te3-Coated Multiwalled Carbon Nanotube Arrays

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Title
Enhanced Electrical Potential of Thermoelectric Power Waves by Sb2Te3-Coated Multiwalled Carbon Nanotube Arrays
Author(s)
Hong, Seunghyun; Kim, Wonyoung; Jeon, Seong-Jae; Seong Chu Lim; Lee, Hoo-Jeong; Hyun, Seungmin; Lee , Young Hee; Baik, Seunghyun
Publication Date
2013-01
Journal
JOURNAL OF PHYSICAL CHEMISTRY C, v.117, no.2, pp.913 - 917
Publisher
AMER CHEMICAL SOC
Abstract
Thermoelectric power waves, where multiwalled carbon nanotubes coated with cyclotrimethylene trinitramine (MWCNT/TNA) directly convert chemical energy to electricity, have received considerable attention recently. However, the low Seebeck coefficient of carbon nanotubes has been regarded as a hurdle to increasing the electrical potential. Here, we present Sb2Te3-coated MWCNT arrays prepared by a sputtering method. An analytical model predicts an increase in Seebeck coefficient of the annular multishell structure by ∼75%. The heterostructure coupled with exothermic chemical reaction of TNA demonstrates an increase in peak electrical potential of 175% (∼198 mV), compared with typical outputs of bare MWCNT/ TNA (∼72 mV). A serial connection of two repeating units increased the peak potential by up to 406 mV.
URI
https://pr.ibs.re.kr/handle/8788114/1398
ISSN
1932-7447
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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