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Decoupling phonon and carrier scattering at carbon nanotube/Bi2Te3 interfaces for improved thermoelectric performance

文献类型：期刊论文

作者Zhao, Yang1,3; Li, Ying1,3; Qiao, Jixiang1,3; Jiang, Song2,3,4,5; Mao, Pengyan1,3; Qiu, Jianhang1,3; Kang, Siqing1,3; Tan, Jun1,3; Tai, Kaiping1,3; Liu, Chang1,3
刊名CARBON
出版日期2020-12-01
卷号170页码:191-198
ISSN号0008-6223
关键词Thermoelectric hybrid Bi2Te3 Carbon nanotube Flexible thermoelectric materials Interfacial scattering
DOI10.1016/j.carbon.2020.08.024
通讯作者Tai, Kaiping(kptai@imr.ac.cn) ; Liu, Chang(cliu@imr.ac.cn)
英文摘要Inorganic 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.
资助项目Ministry 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研究方向Chemistry ; Materials Science
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000579779800019
资助机构Ministry of Science and Technology of China ; National Natural Science Foundation of China ; Science Foundation for The Excellent Youth Scholars of Liaoning Province of China
源URL[http://ir.imr.ac.cn/handle/321006/140994]  
专题金属研究所_中国科学院金属研究所
通讯作者Tai, Kaiping; Liu, Chang
作者单位1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
4.Shanghai Tech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
5.Univ Chinese Acad Sci, Shenyang 110016, Peoples R China
推荐引用方式
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.

入库方式： OAI收割

来源：金属研究所

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