High-performance thermoelectric mineral Cu12-xNi xSb4S13 tetrahedrite

Koichiro Suekuni; Kojiro Tsuruta; Masaru Kunii; Hirotaka Nishiate; Eiji Nishibori; Sachiko Maki; Michihiro Ohta; Atsushi Yamamoto; Mikio Koyano

doi:10.1063/1.4789389

High-performance thermoelectric mineral Cu_12-xNi _xSb₄S₁₃ tetrahedrite

Koichiro Suekuni, Kojiro Tsuruta, Masaru Kunii, Hirotaka Nishiate, Eiji Nishibori, Sachiko Maki, Michihiro Ohta, Atsushi Yamamoto, Mikio Koyano

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

222 Citations (Scopus)

Abstract

X-ray structural analysis and high-temperature thermoelectric properties measurements are performed on polycrystalline samples of artificial mineral Cu_12-xNi_xSb₄S₁₃ tetrahedrite. Analysis of the atomic displacement parameter manifests low-energy vibration of Cu(2) out of CuS₃ triangle plane. The vibration results in low lattice thermal conductivity of less than 0.5 W K^-1 m ^-1. By tuning of the Ni composition x and decrease of electronic thermal conductivity, dimensionless thermoelectric figure of merit for x = 1.5 achieves 0.7 at 665 K, which is a considerably high value among p-type Pb-free sulfides. Because the tetrahedrite is an environmentally friendly material, it constitutes a good thermoelectric material for use in support of a sustainable society.

Original language	English
Article number	043712
Journal	Journal of Applied Physics
Volume	113
Issue number	4
DOIs	https://doi.org/10.1063/1.4789389
Publication status	Published - 2013 Jan 28
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.4789389

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title = "High-performance thermoelectric mineral Cu12-xNi xSb4S13 tetrahedrite",

abstract = "X-ray structural analysis and high-temperature thermoelectric properties measurements are performed on polycrystalline samples of artificial mineral Cu12-xNixSb4S13 tetrahedrite. Analysis of the atomic displacement parameter manifests low-energy vibration of Cu(2) out of CuS3 triangle plane. The vibration results in low lattice thermal conductivity of less than 0.5 W K-1 m -1. By tuning of the Ni composition x and decrease of electronic thermal conductivity, dimensionless thermoelectric figure of merit for x = 1.5 achieves 0.7 at 665 K, which is a considerably high value among p-type Pb-free sulfides. Because the tetrahedrite is an environmentally friendly material, it constitutes a good thermoelectric material for use in support of a sustainable society.",

author = "Koichiro Suekuni and Kojiro Tsuruta and Masaru Kunii and Hirotaka Nishiate and Eiji Nishibori and Sachiko Maki and Michihiro Ohta and Atsushi Yamamoto and Mikio Koyano",

note = "Funding Information: This work was supported financially by a Grant-in-Aid for Research Activity Start-up (Grant No. 22840021) from JSPS, by a Grant-in-Aid for Young Scientists (B) (Grant No. 23760628) from MEXT, by a grant from the Thermal and Electric Energy Technology Foundation, and by a grant from the Japan-U.S. Cooperation on Clean Energy Technologies funded by METI, Japan. The synchrotron-radiation powder experiments were conducted at the SPring-8 BL02B2 beamline with the approval of JASRI (2012B1285).",

year = "2013",

month = jan,

day = "28",

doi = "10.1063/1.4789389",

language = "English",

volume = "113",

journal = "Journal of Applied Physics",

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T1 - High-performance thermoelectric mineral Cu12-xNi xSb4S13 tetrahedrite

AU - Suekuni, Koichiro

AU - Tsuruta, Kojiro

AU - Kunii, Masaru

AU - Nishiate, Hirotaka

AU - Nishibori, Eiji

AU - Maki, Sachiko

AU - Ohta, Michihiro

AU - Yamamoto, Atsushi

AU - Koyano, Mikio

N1 - Funding Information: This work was supported financially by a Grant-in-Aid for Research Activity Start-up (Grant No. 22840021) from JSPS, by a Grant-in-Aid for Young Scientists (B) (Grant No. 23760628) from MEXT, by a grant from the Thermal and Electric Energy Technology Foundation, and by a grant from the Japan-U.S. Cooperation on Clean Energy Technologies funded by METI, Japan. The synchrotron-radiation powder experiments were conducted at the SPring-8 BL02B2 beamline with the approval of JASRI (2012B1285).

PY - 2013/1/28

Y1 - 2013/1/28

N2 - X-ray structural analysis and high-temperature thermoelectric properties measurements are performed on polycrystalline samples of artificial mineral Cu12-xNixSb4S13 tetrahedrite. Analysis of the atomic displacement parameter manifests low-energy vibration of Cu(2) out of CuS3 triangle plane. The vibration results in low lattice thermal conductivity of less than 0.5 W K-1 m -1. By tuning of the Ni composition x and decrease of electronic thermal conductivity, dimensionless thermoelectric figure of merit for x = 1.5 achieves 0.7 at 665 K, which is a considerably high value among p-type Pb-free sulfides. Because the tetrahedrite is an environmentally friendly material, it constitutes a good thermoelectric material for use in support of a sustainable society.

AB - X-ray structural analysis and high-temperature thermoelectric properties measurements are performed on polycrystalline samples of artificial mineral Cu12-xNixSb4S13 tetrahedrite. Analysis of the atomic displacement parameter manifests low-energy vibration of Cu(2) out of CuS3 triangle plane. The vibration results in low lattice thermal conductivity of less than 0.5 W K-1 m -1. By tuning of the Ni composition x and decrease of electronic thermal conductivity, dimensionless thermoelectric figure of merit for x = 1.5 achieves 0.7 at 665 K, which is a considerably high value among p-type Pb-free sulfides. Because the tetrahedrite is an environmentally friendly material, it constitutes a good thermoelectric material for use in support of a sustainable society.

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High-performance thermoelectric mineral Cu_12-xNi _xSb₄S₁₃ tetrahedrite

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