Intrinsically low thermal conductivity from a quasi-one-dimensional crystal structure and enhanced electrical conductivity network via Pb doping in SbCrSe3

doi:10.1038/am.2017.77

	Intrinsically low thermal conductivity from a quasi-one-dimensional crystal structure and enhanced electrical conductivity network via Pb doping in SbCrSe3
	Yang, Dingfeng 1,2; Yao, Wei 3; Yan, Yanci 3; Qiu, Wujie 4; Guo, Lijie 3; Lu, Xu 3; Uher, Ctirad 5; Han, Xiaodong 2; Wang, Guoyu 6; Yang, Tao 1
刊名	NPG ASIA MATERIALS
	2017
卷号	9
ISSN号	1884-4049
DOI	10.1038/am.2017.77
英文摘要	The development of new routes for the production of thermoelectric materials with low-cost and high-performance characteristics has been one of the long-term strategies for saving and harvesting thermal energy. Herein, we report a new approach for improving thermoelectric properties by employing the intrinsically low thermal conductivity of a quasi-one-dimensional (quasi-1D) crystal structure and optimizing the power factor with aliovalent ion doping. As an example, we demonstrated that SbCrSe3, in which two parallel chains of CrSe6 octahedra are linked by antimony atoms, possesses a quasi-1D property that resulted in an ultra-low thermal conductivity of 0.56 W m(-1) K-1 at 900 K. After maximizing the power factor by Pb doping, the peak ZT value of the optimized Pb-doped sample reached 0.46 at 900 K, which is an enhancement of 24 times that of the parent SbCrSe3 structure. The mechanisms that lead to low thermal conductivity derive from anharmonic phonons with the presence of the lone-pair electrons of Sb atoms and weak bonds between the CrSe6 double chains. These results shed new light on the design of new and high-performance thermoelectric materials.
WOS记录号	WOS:000402938000001
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/26670]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, 266 Fangzheng Ave,Shuitu Hitech Ind Pk, Chongqing 400714, Peoples R China 2.Chongqing Univ, Dept Chem, Coll Chem & Chem Engn, 55 Univ South Rd, Chongqing 401331, Peoples R China 3.Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Dept Appl Math & Phys, Beijing, Peoples R China 4.Chongqing Univ, Dept Appl Phys, Coll Phys, 55 Univ South Rd, Chongqing 401331, Peoples R China 5.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai, Peoples R China 6.Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA 7.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yang, Dingfeng,Yao, Wei,Yan, Yanci,et al. Intrinsically low thermal conductivity from a quasi-one-dimensional crystal structure and enhanced electrical conductivity network via Pb doping in SbCrSe3[J]. NPG ASIA MATERIALS,2017,9.
APA	Yang, Dingfeng.,Yao, Wei.,Yan, Yanci.,Qiu, Wujie.,Guo, Lijie.,...&Zhou, Xiaoyuan.(2017).Intrinsically low thermal conductivity from a quasi-one-dimensional crystal structure and enhanced electrical conductivity network via Pb doping in SbCrSe3.NPG ASIA MATERIALS,9.
MLA	Yang, Dingfeng,et al."Intrinsically low thermal conductivity from a quasi-one-dimensional crystal structure and enhanced electrical conductivity network via Pb doping in SbCrSe3".NPG ASIA MATERIALS 9(2017).