A Thermoelectric Zintl Phase Na2+xGa2+xSn4-x with Disordered Na Atoms in Helical Tunnels

Takahiro Yamada; Hisanori Yamane; Hideaki Nagai

doi:10.1002/adma.201501970

A Thermoelectric Zintl Phase Na_2+xGa_2+xSn_4-x with Disordered Na Atoms in Helical Tunnels

Takahiro Yamada, Hisanori Yamane, Hideaki Nagai

IMRAM - Division of Inorganic Material Research

National Institute of Advanced Industrial Science and Technology

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

A polycrystalline sample of Na_2+xGa_2+xSn_4-x with x = 0.19 has low thermal conductivities of 0.56 and 0.58 W m^-1 K^-1 due to static and dynamic positional disorder of Na atoms in the crystal structure and dimensionless figures of merit (ZT values) values of 0.98 and 1.28 at 295 and 340 K, respectively. The performance is comparable to those of commercial Bi₂Te₃-based materials.

Original language	English
Pages (from-to)	4708-4713
Number of pages	6
Journal	Advanced Materials
Volume	27
Issue number	32
DOIs	https://doi.org/10.1002/adma.201501970
Publication status	Published - 2015 Aug 1

Keywords

crystal structures
rattling
thermoelectric materials
Zintl phase

Access to Document

10.1002/adma.201501970

Cite this

@article{eee1e67613ee4cf1aec6d52f74fafb3c,

title = "A Thermoelectric Zintl Phase Na2+xGa2+xSn4-x with Disordered Na Atoms in Helical Tunnels",

abstract = "A polycrystalline sample of Na2+xGa2+xSn4-x with x = 0.19 has low thermal conductivities of 0.56 and 0.58 W m-1 K-1 due to static and dynamic positional disorder of Na atoms in the crystal structure and dimensionless figures of merit (ZT values) values of 0.98 and 1.28 at 295 and 340 K, respectively. The performance is comparable to those of commercial Bi2Te3-based materials.",

keywords = "crystal structures, rattling, thermoelectric materials, Zintl phase",

author = "Takahiro Yamada and Hisanori Yamane and Hideaki Nagai",

note = "Publisher Copyright: {\textcopyright} 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",

year = "2015",

month = aug,

day = "1",

doi = "10.1002/adma.201501970",

language = "English",

volume = "27",

pages = "4708--4713",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-Blackwell",

number = "32",

}

TY - JOUR

T1 - A Thermoelectric Zintl Phase Na2+xGa2+xSn4-x with Disordered Na Atoms in Helical Tunnels

AU - Yamada, Takahiro

AU - Yamane, Hisanori

AU - Nagai, Hideaki

PY - 2015/8/1

Y1 - 2015/8/1

N2 - A polycrystalline sample of Na2+xGa2+xSn4-x with x = 0.19 has low thermal conductivities of 0.56 and 0.58 W m-1 K-1 due to static and dynamic positional disorder of Na atoms in the crystal structure and dimensionless figures of merit (ZT values) values of 0.98 and 1.28 at 295 and 340 K, respectively. The performance is comparable to those of commercial Bi2Te3-based materials.

AB - A polycrystalline sample of Na2+xGa2+xSn4-x with x = 0.19 has low thermal conductivities of 0.56 and 0.58 W m-1 K-1 due to static and dynamic positional disorder of Na atoms in the crystal structure and dimensionless figures of merit (ZT values) values of 0.98 and 1.28 at 295 and 340 K, respectively. The performance is comparable to those of commercial Bi2Te3-based materials.

KW - crystal structures

KW - rattling

KW - thermoelectric materials

KW - Zintl phase

UR - http://www.scopus.com/inward/record.url?scp=84939520991&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84939520991&partnerID=8YFLogxK

U2 - 10.1002/adma.201501970

DO - 10.1002/adma.201501970

M3 - Article

AN - SCOPUS:84939520991

SN - 0935-9648

VL - 27

SP - 4708

EP - 4713

JO - Advanced Materials

JF - Advanced Materials

IS - 32

ER -

A Thermoelectric Zintl Phase Na_2+xGa_2+xSn_4-x with Disordered Na Atoms in Helical Tunnels

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this