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Decoupling phonon and carrier scattering at carbon nanotube/Bi2Te3 interfaces for improved thermoelectric performance
Zhao, Yang1,2; Li, Ying1,2; Qiao, Jixiang1,2; Jiang, Song1,3,4,5; Mao, Pengyan1,2; Qiu, Jianhang1,2; Kang, Siqing1,2; Tan, Jun1,2; Tai, Kaiping1,2; Liu, Chang1,2
Corresponding AuthorTai, Kaiping(kptai@imr.ac.cn) ; Liu, Chang(cliu@imr.ac.cn)
2020-12-01
Source PublicationCARBON
ISSN0008-6223
Volume170Pages:191-198
AbstractInorganic semiconductor-carbon nanotube (CNT) hybrid is a new type of promising flexible thermoelectric (TE) material for efficient thermal energy recovery and positive cooling. However, the influence of CNTs, that typically have a high thermal conductivity (kappa), high electrical conductivity (sigma) and low figure-of-merit (ZT) value, on the hybrid properties remains unclear, and this is vital for the rational design of high-performance CNT-containing TEs. Here, we report a flexible TE material of Bi2Te3 nano-crystals attached to a CNT network with tuned k and s. By plasma pretreating the CNT scaffold, a high density of defects was generated at the hybrid interface, which introduced strong phonon scattering without much sacrifice of s, due to the different attenuations of the wavelength spectra of phonons and carriers. Consequently, the hybrid lattice kappa was significantly reduced to similar to 0.19 W m(-1) K-1, and a ZT value of similar to 0.25 was obtained at room temperature, similar to 50% higher than that obtained using pristine CNTs. Our results provide a general approach to the decoupling of phonon and carrier transport properties by tailoring the hybrid interface, which is significant for developing high-performance flexible CNT-based TE hybrids. (C) 2020 Elsevier Ltd. All rights reserved.
KeywordThermoelectric hybrid Bi2Te3 Carbon nanotube Flexible thermoelectric materials Interfacial scattering
Funding OrganizationMinistry of Science and Technology of China ; National Natural Science Foundation of China ; Science Foundation for The Excellent Youth Scholars of Liaoning Province of China
DOI10.1016/j.carbon.2020.08.024
Indexed BySCI
Language英语
Funding ProjectMinistry of Science and Technology of China[2017YFA0700702] ; Ministry of Science and Technology of China[2016YFA0200101] ; Ministry of Science and Technology of China[2017YFA0700705] ; Ministry of Science and Technology of China[2019QY(Y)0501] ; National Natural Science Foundation of China[51927803] ; National Natural Science Foundation of China[51571193] ; National Natural Science Foundation of China[51402310] ; National Natural Science Foundation of China[51625203] ; National Natural Science Foundation of China[51532008] ; National Natural Science Foundation of China[51521091] ; Science Foundation for The Excellent Youth Scholars of Liaoning Province of China[2019-YQ-08]
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS IDWOS:000579779800019
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140995
Collection中国科学院金属研究所
Corresponding AuthorTai, Kaiping; Liu, Chang
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Univ Chinese Acad Sci, Shenyang 110016, Peoples R China
4.Shanghai Tech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
5.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Yang,Li, Ying,Qiao, Jixiang,et al. Decoupling phonon and carrier scattering at carbon nanotube/Bi2Te3 interfaces for improved thermoelectric performance[J]. CARBON,2020,170:191-198.
APA Zhao, Yang.,Li, Ying.,Qiao, Jixiang.,Jiang, Song.,Mao, Pengyan.,...&Liu, Chang.(2020).Decoupling phonon and carrier scattering at carbon nanotube/Bi2Te3 interfaces for improved thermoelectric performance.CARBON,170,191-198.
MLA Zhao, Yang,et al."Decoupling phonon and carrier scattering at carbon nanotube/Bi2Te3 interfaces for improved thermoelectric performance".CARBON 170(2020):191-198.
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