期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 117, 期 2, 页码 913-917出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp3116963
关键词
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资金
- Basic Science Research Program [2011-0004463]
- WCU (World Class University) program through the NRF of Korea [R31-2008-000-10029-0]
- MEST
- Human Resources Development program of the KETEP grant [20124010203270]
- Korean government Ministry of Knowledge Economy
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 similar to 75%. The heterostructure coupled with exothermic chemical reaction of TNA demonstrates an increase in peak electrical potential of 175% (similar to 198 mV), compared with typical outputs of bare MWCNT/TNA (similar to 72 mV). A serial connection of two repeating units increased the peak potential by up to 406 mV.
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