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

doi:10.1016/j.carbon.2020.08.024

IMR OpenIR

	Decoupling phonon and carrier scattering at carbon nanotube/Bi2Te3 interfaces for improved thermoelectric performance
	Zhao, Yang 1,2; Li, Ying 1,2; Qiao, Jixiang 1,2; Jiang, Song 1,3,4,5; Mao, Pengyan 1,2; Qiu, Jianhang 1,2; Kang, Siqing 1,2; Tan, Jun 1,2; Tai, Kaiping 1,2; Liu, Chang 1,2
通讯作者	Tai, Kaiping(kptai@imr.ac.cn) ; Liu, Chang(cliu@imr.ac.cn)
	2020-12-01
发表期刊	CARBON
ISSN	0008-6223
卷号	170 页码:191-198
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.
关键词	Thermoelectric hybrid Bi2Te3 Carbon nanotube Flexible thermoelectric materials Interfacial scattering
资助者	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
DOI	10.1016/j.carbon.2020.08.024
收录类别	SCI
语种	英语
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
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary
WOS记录号	WOS:000579779800019
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：40[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/140995
专题	中国科学院金属研究所
通讯作者	Tai, Kaiping; Liu, Chang
作者单位	1.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
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.