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  Lanthanide Contraction as a Design Factor for High-Performance Half-Heusler Thermoelectric Materials

Liu, Y., Fu, C., Xia, K., Yu, J., Zhao, X., Pan, H., et al. (2018). Lanthanide Contraction as a Design Factor for High-Performance Half-Heusler Thermoelectric Materials. Advanced Materials, 30(32): 1800881, pp. 1-7. doi:10.1002/adma.201800881.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-F760-C Version Permalink: http://hdl.handle.net/21.11116/0000-0001-F8BF-1
Genre: Journal Article

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 Creators:
Liu, Yintu1, Author
Fu, Chenguang2, Author              
Xia, Kaiyang1, Author
Yu, Junjie1, Author
Zhao, Xinbing1, Author
Pan, Hongge1, Author
Felser, Claudia3, Author              
Zhu, Tiejun1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: Forming solid solutions, as an effective strategy to improve thermoelectric performance, has a dilemma that alloy scattering will reduce both the thermal conductivity and carrier mobility. Here, an intuitive way is proposed to decouple the opposite effects, that is, using lanthanide contraction as a design factor to select alloying atoms with large mass fluctuation but small radius difference from the host atoms. Typical half-Heusler alloys, n-type (Zr,Hf)NiSn and p-type (Nb,Ta)FeSb solid solutions, are taken as paradigms to attest the validity of this design strategy, which exhibit greatly suppressed lattice thermal conductivity and maintained carrier mobility. Furthermore, by considering lanthanide contraction, n-type (Zr,Hf)CoSb-based alloys with high zT of approximate to 1.0 are developed. These results highlight the significance of lanthanide contraction as a design factor in enhancing the thermoelectric performance and reveal the practical potential of (Zr,Hf)CoSb-based half-Heusler compounds due to the matched n-type and p-type thermoelectric performance.

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Language(s): eng - English
 Dates: 2018-06-252018-06-25
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000440813300005
DOI: 10.1002/adma.201800881
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Title: Advanced Materials
  Other : Adv. Mater.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 30 (32) Sequence Number: 1800881 Start / End Page: 1 - 7 Identifier: ISSN: 0935-9648
CoNE: /journals/resource/954925570855