IMR OpenIR
Flexible layer-structured Bi2Te3 thermoelectric on a carbon nanotube scaffold
Jin, Qun; Jiang, Song; Zhao, Yang; Wang, Dong; Qiu, Jianhang; Tang, Dai-Ming; Tan, Jun; Sun, Dong-Ming; Hou, Peng-Xiang; Chen, Xing-Qiu; Tai, Kaiping; Gao, Ning; Liu, Chang; Cheng, Hui-Ming; Jiang, Xin
2019
Source PublicationNATURE MATERIALS
ISSN1476-1122
Volume18Issue:1Pages:62-+
AbstractInorganic 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.
Indexed BySCI
Language英语
WOS IDWOS:000452876200017
PublisherNATURE PUBLISHING GROUP
Citation statistics
Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81525
Collection中国科学院金属研究所
Recommended Citation
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(1):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(1),62-+.
MLA Jin, Qun,et al."Flexible layer-structured Bi2Te3 thermoelectric on a carbon nanotube scaffold".NATURE MATERIALS 18.1(2019):62-+.
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