Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy

doi:10.1021/acsami.0c13542

HFCAS OpenIR

	Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy
	Jiang, Zhongsheng 1,2; Ming, Hongwei 1,2; Qin, Xiaoying1 ; Feng, Dan 3,4; Zhang, Jian1 ; Song, Chunjun1 ; Li, Di1 ; Xin, Hongxing1 ; Li, Juncai 1,2; He, Jiaqing 3
	2020-10-14
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
通讯作者	Qin, Xiaoying(xyqin@issp.ac.cn)
摘要	To achieve high thermoelectric conversion efficiency in Bi0.4Sb1.6Te3 (BST) alloy is vital for its applications in low-grade energy harvesting. Here, we show that 56% increase in the power factor (PF) (from 16 to 25 mu W cm(-1) K-2) and 32% reduction of lattice thermal conductivity kappa(L )(from 0.56 to 0.38 W m(-1) K-1) as well as an approximately four-fold decrease in bipolar-effect contribution kappa(b) (from 0.48 to 0.12 W m(-1) K-1) can be achieved at 512 K through the incorporation of 0.2 vol % PbSe nanoparticles in the BST matrix. Analyses indicate that the remarkable increase in PF for the composite samples can be mainly attributed to strong electron scattering at the large interface barriers, inhibiting effectively the electron contribution to the total thermopower at elevated temperatures, while the large drop of kappa(L) and kappa(b) originates from enhanced phonon scattering by PbSe nanoinclusions as well as phase boundaries (among BST and PbSe nanophase) and suppression of electron transport, respectively. As a result, a maximum figure of merit (ZT) of 1.56 (at 400 K) and an average ZT (ZT(ave)) of 1.44 in the temperature range of 300-512 K are reached. Correspondingly, a record projected conversion efficiency eta = 11% is achieved at the cold side 300 K and hot side 512 K in the BST-based composite incorporated with 0.2 vol % PbSe nanoinclusions.
关键词	thermoelectric materials BST carrier-scattering engineering conversion efficiency Debye-Callaway model
DOI	10.1021/acsami.0c13542
关键词[WOS]	BISMUTH-ANTIMONY TELLURIDE ; FIGURE ; ENHANCEMENT ; COMPOSITES ; MERIT ; POWER ; PBTE
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of China[11674322] ; Natural Science Foundation of China[51672278] ; Natural Science Foundation of China[51972307] ; Leading Talents of Guangdong Province Program[00201517]
项目资助者	Natural Science Foundation of China ; Leading Talents of Guangdong Province Program
WOS研究方向	Science & Technology - Other Topics ; Materials Science
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000582345700046
出版者	AMER CHEMICAL SOC
引用统计	被引频次：20[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/104843
专题	中国科学院合肥物质科学研究院
通讯作者	Qin, Xiaoying
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, HFIPS, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.South Univ Sci & Technol China, Shenzhen 518055, Peoples R China 4.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Zhongsheng,Ming, Hongwei,Qin, Xiaoying,et al. Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12.
APA	Jiang, Zhongsheng.,Ming, Hongwei.,Qin, Xiaoying.,Feng, Dan.,Zhang, Jian.,...&He, Jiaqing.(2020).Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy.ACS APPLIED MATERIALS & INTERFACES,12.
MLA	Jiang, Zhongsheng,et al."Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy".ACS APPLIED MATERIALS & INTERFACES 12(2020).