气候变化领域集成服务门户(CCPortal): High thermoelectric performance of p-BiSbTe compounds prepared by ultra-fast thermally induced reaction

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DOI	10.1039/c7ee02677c
	High thermoelectric performance of p-BiSbTe compounds prepared by ultra-fast thermally induced reaction
	Zheng G.; Su X.; Xie H.; Shu Y.; Liang T.; She X.; Liu W.; Yan Y.; Zhang Q.; Uher C.; Kanatzidis M.G.; Tang X.
发表日期	2017
ISSN	17545692
起始页码	2638
结束页码	2652
卷号	10 期号:12
英文摘要	The traditional zone melting (ZM) method for the fabrication of state of the art Bi2Te3-based thermoelectric materials has long been considered a time and energy intensive process. Herein, a combustion synthesis known as the thermally induced flash synthesis (TIFS) is employed to synthesize high performance p-type BiSbTe alloys within 20 min compared to tens of hours for the ZM samples. The thermodynamic parameters and phase transformation mechanism during the TIFS process were systematically studied for the first time. TIFS combined with plasma activated sintering (PAS) results in a single phase homogeneous material with excellent repeatability, high thermoelectric performance (maximum ZT ∼ 1.2 at 373 K) and robust mechanical properties in a very short time of less than 20 min. The technologically relevant average ZT value of TIFS-PAS fabricated Bi0.5Sb1.5Te3 from 298 K to 523 K is 0.86, about a 46% improvement over the ZM sample. The compressive and bending strength of TIFS-PAS Bi0.5Sb1.5Te3 are also improved by about 5 fold compared with those of the ZM samples. Thermoelectric power generation modules assembled using the TIFS-based high performance n and p type materials show the largest thermoelectric conversion efficiency of 5.2% when subjected to a temperature gradient of 250 K, representing about 42% enhancement compared with the commercial ZM-based module. Because of the simplicity and scalability of the process and short synthesis time, the TIFS-PAS technology provides a new and efficient way for large-scale, economical fabrication of Bi2Te3-based thermoelectrics. © The Royal Society of Chemistry.
英文关键词	Antimony compounds; Bending strength; Bismuth compounds; Combustion synthesis; Phase transitions; Sintering; Thallium compounds; Thermoelectric power; Thermoelectricity; Economical fabrication; Phase transformation mechanisms; Plasma activated sintering; Thermally induced reactions; Thermo-Electric materials; Thermodynamic parameter; Thermoelectric conversion efficiency; Thermoelectric performance; Tellurium compounds; alloy; chemical compound; combustion; energy efficiency; melting; methodology; performance assessment; phase transition; power generation; temperature gradient; thermal power; thermodynamics
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190360
作者单位	State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China; Department of Chemistry, Northwestern University, Evanston, IL 60208, United States; Department of Physics, University of Michigan, Ann Arbor, MI 48109, United States
推荐引用方式 GB/T 7714	Zheng G.,Su X.,Xie H.,et al. High thermoelectric performance of p-BiSbTe compounds prepared by ultra-fast thermally induced reaction[J],2017,10(12).
APA	Zheng G..,Su X..,Xie H..,Shu Y..,Liang T..,...&Tang X..(2017).High thermoelectric performance of p-BiSbTe compounds prepared by ultra-fast thermally induced reaction.Energy & Environmental Science,10(12).
MLA	Zheng G.,et al."High thermoelectric performance of p-BiSbTe compounds prepared by ultra-fast thermally induced reaction".Energy & Environmental Science 10.12(2017).