Cd substitution in Zintl phase Eu5In2Sb6 enhancing the thermoelectric performance

Article


Lv, Wanyu, Yang, Chunhui, Lin, Jianwei, Hu, Xinyi, Guo, Kai, Yang, Xinxin, Luo, Jun and Zhao, Jing-Tai. 2017. "Cd substitution in Zintl phase Eu5In2Sb6 enhancing the thermoelectric performance." Journal of Alloys and Compounds. 726, pp. 618-622. https://doi.org/10.1016/j.jallcom.2017.08.033
Article Title

Cd substitution in Zintl phase Eu5In2Sb6 enhancing the thermoelectric performance

ERA Journal ID1448
Article CategoryArticle
AuthorsLv, Wanyu (Author), Yang, Chunhui (Author), Lin, Jianwei (Author), Hu, Xinyi (Author), Guo, Kai (Author), Yang, Xinxin (Author), Luo, Jun (Author) and Zhao, Jing-Tai (Author)
Journal TitleJournal of Alloys and Compounds
Journal Citation726, pp. 618-622
Number of Pages5
Year2017
PublisherElsevier
Place of PublicationNetherlands
ISSN0925-8388
1873-4669
Digital Object Identifier (DOI)https://doi.org/10.1016/j.jallcom.2017.08.033
Web Address (URL)https://reader.elsevier.com/reader/sd/pii/S0925838817327615?token=1707731244058EE23540068C2C7FC16D3D2E2EEE89CF030F0BE189D99A47E944836BBB191697C78FA854CFFFDA331D61
Abstract

Rare earth-contained compound Eu5In2Sb6 which shows improved air stability and competitive thermoelectric properties in comparison to its alkaline earth analogues, has attracted much attention recently for thermoelectric applications. Polycrystalline samples Eu5In2-xCdxSb6 (x ¼ 0, 0.01, 0.02, 0.06, 0.08, 0.1) were synthesized via a direct element combination reaction and subsequent hot-press sintering. With increasing Cd concentration, both the electrical resistivity and Seebeck coefficient decrease monotonously, and the conductive behaviors vary essentially from non-degenerate semiconductor to degenerate semiconductor. The maximum value of power factor (5.78 mW/cm*K2 ) can be obtained with x ¼ 0.1. While the total thermal conductivity rise as a result of the contribution of electronic part, the thermoelectric figure of merit zT for Eu5In2-xCdxSb6 can be enhanced up to 0.5 at 709 K

KeywordsEu5In2Sb6; Zintl phase; Semiconductors; Thermoelectric properties
ANZSRC Field of Research 2020519999. Other physical sciences not elsewhere classified
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Byline AffiliationsShanghai Jiao Tong University, China
Institution of OriginUniversity of Southern Queensland
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