气候变化领域集成服务门户(CCPortal): High-efficiency half-Heusler thermoelectric modules enabled by self-propagating synthesis and topologic structure optimization

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DOI	10.1039/c9ee02228g
	High-efficiency half-Heusler thermoelectric modules enabled by self-propagating synthesis and topologic structure optimization
	Xing Y.; Liu R.; Liao J.; Zhang Q.; Xia X.; Wang C.; Huang H.; Chu J.; Gu M.; Zhu T.; Zhu C.; Xu F.; Yao D.; Zeng Y.; Bai S.; Uher C.; Chen L.
发表日期	2019
ISSN	1754-5692
起始页码	3390
结束页码	3399
卷号	12 期号:11
英文摘要	Combining high thermoelectric (TE) performance, excellent mechanical properties, and good thermal stability, half-Heusler materials show great potential in real applications, such as industrial waste heat recovery. However, the materials synthesis technology developed in the laboratory scale environment cannot fulfil the requirements of massive device fabrication. In this work, a batch synthesis utilizing the self-propagating high-Temperature synthesis (SHS) method was used to prepare state-of-The-Art n-Type Zr0.5Hf0.5NiSn0.985Sb0.015 and p-Type Zr0.5Hf0.5CoSb0.8Sn0.2 half-Heusler alloys. Due to the nonequilibrium reaction process, dense dislocation arrays were introduced in both n-Type and p-Type materials, which greatly depressed the lattice thermal conductivity. As a consequence, the zT values of samples cut from ingots weighing a few hundreds of grams compared favorably with those prepared from few gram laboratory size pellets. Based on the high TE performance, a three-dimensional finite element model encompassing all relevant parameters was applied to optimize the topological structures of both a half-Heusler single-stage module and a half-Heusler/Bi2Te3 segmented module. The optimized modules attained record-high conversion efficiencies of 9.6% and 12.4% for the single-stage and the segmented module, respectively. The work documents a comprehensive processing of novel TE materials culminating in the assembly of efficient TE modules. As such, it paves the way for widespread commercial applications of TE power generation. This journal is © The Royal Society of Chemistry.
语种	英语
scopus关键词	Efficiency; Metal castings; Thermal conductivity; Thermoelectricity; Topology; Waste heat; Waste heat utilization; Commercial applications; High conversion efficiency; Lattice thermal conductivity; Self-propagating high temperature synthesis; Self-propagating synthesis; Structure optimization; Thermo-electric modules; Three dimensional finite element model; Structural optimization; detection method; efficiency measurement; industrial waste; mechanical property; model; optimization; performance assessment; power generation; three-dimensional modeling
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162860
作者单位	State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 20050, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China; A State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China; Department of Physics, University of Michigan, Ann Arbor, MI 48109, United States
推荐引用方式 GB/T 7714	Xing Y.,Liu R.,Liao J.,et al. High-efficiency half-Heusler thermoelectric modules enabled by self-propagating synthesis and topologic structure optimization[J],2019,12(11).
APA	Xing Y..,Liu R..,Liao J..,Zhang Q..,Xia X..,...&Chen L..(2019).High-efficiency half-Heusler thermoelectric modules enabled by self-propagating synthesis and topologic structure optimization.Energy and Environmental Science,12(11).
MLA	Xing Y.,et al."High-efficiency half-Heusler thermoelectric modules enabled by self-propagating synthesis and topologic structure optimization".Energy and Environmental Science 12.11(2019).