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

Ran He | Zendy; Lihong Huang | Zendy; Yumei Wang | Zendy; Ge. G. Samsonidze | Zendy; Boris Kozinsky | Zendy; Qinyong Zhang | Zendy; Zhifeng Ren | Zendy

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

Author(s) -

Ran He,

Lihong Huang,

Yumei Wang,

Ge. G. Samsonidze,

Boris Kozinsky,

Qinyong Zhang,

Zhifeng Ren

Publication year - 2016

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4952994

Subject(s) - materials science , thermoelectric effect , arc melting , hot pressing , ball mill , figure of merit , metallurgy , solid solution , power factor , analytical chemistry (journal) , alloy , thermodynamics , optoelectronics , power (physics) , physics , chemistry , chromatography

Here 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

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