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Enhanced Electrical Potential of Thermoelectric Power Waves by Sb2Te3-Coated Multiwalled Carbon Nanotube Arrays
- Source :
- The Journal of Physical Chemistry C. 117:913-917
- Publication Year :
- 2013
- Publisher :
- American Chemical Society (ACS), 2013.
-
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.
- Subjects :
- Exothermic reaction
Nanotube
Materials science
business.industry
Nanotechnology
Heterojunction
Carbon nanotube
Chemical reaction
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
law.invention
Chemical energy
General Energy
Sputtering
law
Seebeck coefficient
Optoelectronics
Physical and Theoretical Chemistry
business
Subjects
Details
- ISSN :
- 19327455 and 19327447
- Volume :
- 117
- Database :
- OpenAIRE
- Journal :
- The Journal of Physical Chemistry C
- Accession number :
- edsair.doi...........7cbafe423a0d5bfbee5a7daff51338e7