气候变化领域集成服务门户(CCPortal): Magnetism-induced huge enhancement of the room-temperature thermoelectric and cooling performance of p-type BiSbTe alloys

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DOI	10.1039/c9ee03446c
	Magnetism-induced huge enhancement of the room-temperature thermoelectric and cooling performance of p-type BiSbTe alloys
	Li C.; Ma S.; Wei P.; Zhu W.; Nie X.; Sang X.; Sun Z.; Zhang Q.; Zhao W.
发表日期	2020
ISSN	17545692
起始页码	535
结束页码	544
卷号	13 期号:2
英文摘要	Bi2Te3-Based alloys are the only thermoelectric material for commercial applications while their low performance is extremely difficult to improve. Herein, superparamagnetic Fe3O4 nanoparticles (Fe3O4-NPs) are incorporated into a commercial p-type Bi0.5Sb1.5Te3 matrix to improve the thermoelectric and cooling performance near room temperature. It is discovered that the Seebeck coefficient of the Fe3O4/Bi0.5Sb1.5Te3 nanocomposites remarkably increased while the thermal conductivity significantly decreased because of the carrier multiple scattering and the enhanced phonon scattering induced by the Fe3O4-NPs, respectively. The maximum ZT reaches 1.5 at 340 K for the nanocomposite with 0.15 wt% of Fe3O4-NPs, being 32% higher than that of the matrix. At near room temperature, the huge cooling temperature difference reaches 5.4 K for a single-leg device made with the nanocomposite, increased by about 3 times as compared with the 1.8 K of the device made with the Bi0.5Sb1.5Te3 matrix. This work reveals that introducing superparamagnetic nanoparticles is a universal approach to simultaneously enhance the thermoelectric and cooling performance of p-type BiSbTe-based alloys. © 2020 The Royal Society of Chemistry.
英文关键词	Bismuth compounds; Cooling; Iron oxides; Magnetite; Nanocomposites; Nanoparticles; Superparamagnetism; Thermal conductivity; Commercial applications; Cooling performance; Cooling temperature; Fe3O4 nanoparticles; Near room temperature; Superparamagnetic nanoparticles; Thermo-Electric materials; Universal approach; Bismuth alloys; cooling; iron oxide; nanocomposite; performance assessment; scattering; temperature effect; temperature gradient; thermal conductivity
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/189700
作者单位	State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China; Nanostructure Research Center, Wuhan University of Technology, Wuhan, 430070, China
推荐引用方式 GB/T 7714	Li C.,Ma S.,Wei P.,et al. Magnetism-induced huge enhancement of the room-temperature thermoelectric and cooling performance of p-type BiSbTe alloys[J],2020,13(2).
APA	Li C..,Ma S..,Wei P..,Zhu W..,Nie X..,...&Zhao W..(2020).Magnetism-induced huge enhancement of the room-temperature thermoelectric and cooling performance of p-type BiSbTe alloys.Energy & Environmental Science,13(2).
MLA	Li C.,et al."Magnetism-induced huge enhancement of the room-temperature thermoelectric and cooling performance of p-type BiSbTe alloys".Energy & Environmental Science 13.2(2020).