High-performance lead-free cubic GeTe-based thermoelectric alloy

doi:10.1016/j.xcrp.2022.100902

HFCAS OpenIR

	High-performance lead-free cubic GeTe-based thermoelectric alloy
	Liu, Ming 1; Zhu, Jianbo 1,2; Cui, Bo 3; Guo, Fengkai 1; Liu, Zihang 1; Zhu, Yuke 1; Guo, Muchun 1; Sun, Yuxin 1; Zhang, Qian 4; Zhang, Yongsheng 2; Cai, Wei 1; Sui, Jiehe 1
	2022-06-15
发表期刊	CELL REPORTS PHYSICAL SCIENCE
通讯作者	Guo, Fengkai(fkguo@hit.edu.cn) ; Zhang, Yongsheng(yshzhang@theory.issp.ac.cn) ; Sui, Jiehe(suijiehe@hit.edu.cn)
摘要	The ferroelectric phase transition of GeTe thermoelectric materials caused by the 4s(2) lone-pair electrons of Ge2+ leads to the sudden change of thermal expansion coefficient, which severely restrains its practical applications. Herein, we demonstrate a successful way to suppress the ferroelectric phase-transition temperature down to below room temperature in GeTe. Our approach involves LiSbTe2 alloying, where the charge distribution is manipulated to reduce the influence of the stereochemical activity of the cation lone-pair electrons on the crystal structure. LiSbTe2 alloying can also promote multi-band convergence and enhance phonon scattering. Consequently, a superior ZT(ave) of 1.38 within 300-773 K is achieved in cubic (GeTe)(0.70)(LiSbTe2)(0.30) alloys, which is significantly higher than the reported results for room temperature or near-room temperature cubic GeTe systems so far. Moreover, the calculated conversion efficiency of 17% is also the highest among all nontoxic p-type polycrystalline thermoelectric materials. This work takes a solid step forward in the application of GeTe.
DOI	10.1016/j.xcrp.2022.100902
关键词[WOS]	THERMAL-CONDUCTIVITY ; BAND CONVERGENCE ; POWER ; EFFICIENCY ; SUPPRESSION ; CONVERSION ; MODULES ; FIGURE ; MERIT
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52130106] ; National Natural Science Foundation of China[52101247] ; National Natural Science Foundation of China[51871082] ; National Natural Science Foundation of China[11774347] ; Fundamental Research Funds for the Central Universities[HIT.OCEF.2021014] ; Heilongjiang Touyan Team
项目资助者	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Heilongjiang Touyan Team
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Multidisciplinary
WOS记录号	WOS:000881723800007
出版者	ELSEVIER
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/334002/130167
专题	中国科学院合肥物质科学研究院
通讯作者	Guo, Fengkai; Zhang, Yongsheng; Sui, Jiehe
作者单位	1.Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 3.China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China 4.Harbin Inst Technol, Inst Mat Genome & Big Data, Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Liu, Ming,Zhu, Jianbo,Cui, Bo,et al. High-performance lead-free cubic GeTe-based thermoelectric alloy[J]. CELL REPORTS PHYSICAL SCIENCE,2022,3.
APA	Liu, Ming.,Zhu, Jianbo.,Cui, Bo.,Guo, Fengkai.,Liu, Zihang.,...&Sui, Jiehe.(2022).High-performance lead-free cubic GeTe-based thermoelectric alloy.CELL REPORTS PHYSICAL SCIENCE,3.
MLA	Liu, Ming,et al."High-performance lead-free cubic GeTe-based thermoelectric alloy".CELL REPORTS PHYSICAL SCIENCE 3(2022).