Flexible layer-structured Bi2Te3 thermoelectric on a carbon nanotube scaffold

doi:10.1038/s41563-018-0217-z

	Flexible layer-structured Bi2Te3 thermoelectric on a carbon nanotube scaffold
	Jin, Qun 9,10; Jiang, Song 1,2,9,10; Zhao, Yang 3,9; Wang, Dong 4,5; Qiu, Jianhang 3,9; Tang, Dai-Ming 3,6,9; Tan, Jun 3,9; Sun, Dong-Ming 3,9; Hou, Peng-Xiang 3,9; Chen, Xing-Qiu 3,9
刊名	NATURE MATERIALS
	2019-01
卷号	18 页码:62-+
ISSN号	1476-1122
DOI	10.1038/s41563-018-0217-z
英文摘要	Inorganic chalcogenides are traditional high-performance thermoelectric materials. However, they suffer from intrinsic brittleness and it is very difficult to obtain materials with both high thermoelectric ability and good flexibility. Here, we report a flexible thermoelectric material comprising highly ordered Bi2Te3 nanocrystals anchored on a single-walled carbon nanotube (SWCNT) network, where a crystallographic relationship exists between the Bi2Te3 <<(1)over bar>2 (1) over bar0> orientation and SWCNT bundle axis. This material has a power factor of similar to 1,600 mu Wm(-1)K(-2) at room temperature, decreasing to 1,100 mu Wm(-1) K-2 at 473 K. With a low in-plane lattice thermal conductivity of 0.26 +/- 0.03 Wm(-1) K-1, a maximum thermoelectric figure of merit (ZT) of 0.89 at room temperature is achieved, originating from a strong phonon scattering effect. The origin of the excellent flexibility and thermoelectric performance of the Bi2Te3-SWCNT material is attributed, by experimental and computational evidence, to its crystal orientation, interface and nanopore structure. Our results provide insight into the design and fabrication of high-performance flexible thermoelectric materials.
资助项目	National Natural Science Foundation of China[51402310] ; National Natural Science Foundation of China[51571193] ; National Natural Science Foundation of China[51625203] ; National Natural Science Foundation of China[51532008] ; National Natural Science Foundation of China[51521091]
WOS关键词	BISMUTH TELLURIDE ; THERMAL-CONDUCTIVITY ; FIGURE ; PERFORMANCE ; DEVICES ; MERIT ; TRANSPARENT ; MECHANICS ; FILMS ; FOIL
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000452876200017
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/64476]
专题	中国科学院近代物理研究所
通讯作者	Tai, Kaiping; Gao, Ning; Liu, Chang
作者单位	1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai, Peoples R China 3.Univ Sci & Technol China, Dept Mat Sci & Engn, Shenyang, Liaoning, Peoples R China 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou, Gansu, Peoples R China 5.Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing, Peoples R China 6.Natl Inst Mat Sci, World Premier Int Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki, Japan 7.Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Shenzhen, Peoples R China 8.Univ Siegen, Inst Mat Engn, Siegen, Germany 9.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Liaoning, Peoples R China 10.Univ Chinese Acad Sci, Shenyang, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Jin, Qun,Jiang, Song,Zhao, Yang,et al. Flexible layer-structured Bi2Te3 thermoelectric on a carbon nanotube scaffold[J]. NATURE MATERIALS,2019,18:62-+.
APA	Jin, Qun.,Jiang, Song.,Zhao, Yang.,Wang, Dong.,Qiu, Jianhang.,...&Jiang, Xin.(2019).Flexible layer-structured Bi2Te3 thermoelectric on a carbon nanotube scaffold.NATURE MATERIALS,18,62-+.
MLA	Jin, Qun,et al."Flexible layer-structured Bi2Te3 thermoelectric on a carbon nanotube scaffold".NATURE MATERIALS 18(2019):62-+.