DataVXACS Applied Nano MaterialsPaper
journal article·2023-04-14Open access

Enhanced Thermoelectric Properties of Mg2Sn-Mg3Sb2 Nanocomposites by Tailoring Matrix/Inclusion Interface toward Energy Harvesting Applications

Yongbin Zhu, Rui Shu, Feng Jiang, Anna Elsukova, Per O. Å. Persson, Per Eklund, Weishu Liu

ACS Applied Nano Materials· Volume 6· Issue 7
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Source abstract

Abstract

High Resolution Image Download MS PowerPoint Slide Nanocomposites have been long exploited for achieving balanced material properties. Here, we synthesized nominal (Mg 2 Sn 0.85 Sb 0.15 ) 1– x -(Mg 3 Sb 2 ) x ( x = 0–0.15) nanocomposites, achieving a significant reduction of the lattice thermal conductivity of Mg 2 Sn 0.85 Sb 0.15 from 2.03 Wm –1 K –1 to 1.38 Wm –1 K –1 due to phonon scattering by V Mg point defects, Mg 3 Sb 2 nanoparticles, and heterogeneous interfaces. Hence, a significantly enhanced thermoelectric figure of merit, ZT, is achieved. At 773 K, the sample of x = 0.075 reaches a ZT of 1.4, corresponding to a 14% enhancement compared to the Mg 2 Sn 0.85 Sb 0.15 ( x = 0) sample. The strategy of introducing heterogeneous structures has important implications for reducing thermal conductivity for other solid-solution thermoelectric systems.
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Research context

Nanomaterials

OpenAlex topics: Advanced Thermoelectric Materials and Devices · Thermal properties of materials · Thermal Radiation and Cooling Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China

Thin Film Physics Division, Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping SE-581 83, Sweden

Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China

Funding

Guangdong Science and Technology Department · Guangdong Province Introduction of Innovative R&D Team · Ministry of Science and Technology of the People's Republic of China · Link?pings Universitet · Knut och Alice Wallenbergs Stiftelse · Tencent · National Natural Science Foundation of China

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