Enhanced thermoelectric properties of n-type NbCoSn half-Heusler by improving phase purity

He, Ran; Huang, Lihong; Wang, Yumei; Samsonidze, Georgy; Kozinsky, Boris; Zhang, Qinyong; Ren, Zhifeng

doi:10.1063/1.4952994

Title: Enhanced thermoelectric properties of n-type NbCoSn half-Heusler by improving phase purity

Abstract

In this paper, we report the thermoelectric properties of NbCoSn-based n-type half-Heuslers (HHs) that were obtained through arc melting, ball milling, and hot pressing process. With 10% Sb substitution at the Sn site, we obtained enhanced n-type properties with a maximum power factor reaching ~35 μW cm^-1 K^-2 and figure of merit (ZT) value ~0.6 in NbCoSn_0.9Sb_0.1. The ZT is doubled compared to the previous report. In addition, the specific power cost ($ W^-1) is decreased by ~68% comparing to HfNiSn-based n-type HH because of the elimination of Hf.

Authors:: He, Ran; Huang, Lihong; Wang, Yumei; Samsonidze, Georgy; Kozinsky, Boris; Zhang, Qinyong; Ren, Zhifeng

Publication Date:: Sat Oct 01 00:00:00 EDT 2016

Research Org.:: Univ. of Houston, TX (United States); Xihua Univ., Chengdu (China)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation of China (NSFC) (China); Youth Science Innovation Program of Sichuan Province (China); Science and Technology Support Program of Sichuan Province (China); Chunhui Program from Education Ministry of China (China); Xihua Univ. (China)

Contributing Org.:: Chinese Academy of Sciences (CAS), Beijing (China); Robert Bosch LLC, Cambridge, MA (United States)

OSTI Identifier:: 1255315

Alternate Identifier(s):: OSTI ID: 1360094; OSTI ID: 1416460

Grant/Contract Number:: SC0010831; 51372208; 51472207; 51572226; 2015TD0017; 2015GZ0060; Z2014042; SZJJ2013-034; DOE DE-SC0010831

Resource Type:: Published Article

Journal Name:: APL Materials

Additional Journal Information:: Journal Name: APL Materials Journal Volume: 4 Journal Issue: 10; Journal ID: ISSN 2166-532X

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Doping; Thermal conductivity; Electron densities of states; Carrier density; Density functional theory

Citation Formats


                    He, Ran, Huang, Lihong, Wang, Yumei, Samsonidze, Georgy, Kozinsky, Boris, Zhang, Qinyong, and Ren, Zhifeng. Enhanced thermoelectric properties of n-type NbCoSn half-Heusler by improving phase purity.  United States: N. p., 2016. 
Web.  doi:10.1063/1.4952994.

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                    He, Ran, Huang, Lihong, Wang, Yumei, Samsonidze, Georgy, Kozinsky, Boris, Zhang, Qinyong, & Ren, Zhifeng. Enhanced thermoelectric properties of n-type NbCoSn half-Heusler by improving phase purity.  United States.  https://doi.org/10.1063/1.4952994

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                    He, Ran, Huang, Lihong, Wang, Yumei, Samsonidze, Georgy, Kozinsky, Boris, Zhang, Qinyong, and Ren, Zhifeng. Sat .  
"Enhanced thermoelectric properties of n-type NbCoSn half-Heusler by improving phase purity".  United States.  https://doi.org/10.1063/1.4952994.

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@article{osti_1255315,

  title        = {Enhanced thermoelectric properties of n-type NbCoSn half-Heusler by improving phase purity},

  author       = {He, Ran and Huang, Lihong and Wang, Yumei and Samsonidze, Georgy and Kozinsky, Boris and Zhang, Qinyong and Ren, Zhifeng},

  abstractNote = {In this paper, we report the thermoelectric properties of NbCoSn-based n-type half-Heuslers (HHs) that were obtained through arc melting, ball milling, and hot pressing process. With 10% Sb substitution at the Sn site, we obtained enhanced n-type properties with a maximum power factor reaching ~35 μW cm-1 K-2 and figure of merit (ZT) value ~0.6 in NbCoSn0.9Sb0.1. The ZT is doubled compared to the previous report. In addition, the specific power cost ($ W-1) is decreased by ~68% comparing to HfNiSn-based n-type HH because of the elimination of Hf.},

  doi          = {10.1063/1.4952994},

  journal      = {APL Materials},

  number       = 10,

  volume       = 4,

  place        = {United States},

  year         = {Sat Oct 01 00:00:00 EDT 2016},

  month        = {Sat Oct 01 00:00:00 EDT 2016}

}

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