Topotactic anion-exchange in thermoelectric nanostructured layered tin chalcogenides with reduced selenium content

Guang Han; Srinivas R. Popuri; Heather F. Greer; Ruizhi Zhang; Lourdes Ferre-Llin; Jan-Willem G. Bos; Wuzong Zhou; Michael J. Reece; Douglas J. Paul; Andrew R. Knox; Duncan H. Gregory

doi:10.1039/C7SC05190E

Topotactic anion-exchange in thermoelectric nanostructured layered tin chalcogenides with reduced selenium content

Guang Han, Srinivas R. Popuri, Heather F. Greer, Ruizhi Zhang, Lourdes Ferre-Llin, Jan-Willem G. Bos, Wuzong Zhou, Michael J. Reece, Douglas J. Paul, Andrew R. Knox, Duncan H. Gregory

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Abstract

Anion exchange has been performed with nanoplates of tin sulfide (SnS) via “soft chemical” organic-free solution syntheses to yield layered pseudo-ternary tin chalcogenides on a 10 g-scale. SnS undergoes a topotactic transformation to form a series of S-substituted tin selenide (SnSe) nano/micro-plates with tuneable chalcogenide composition. SnS0.1Se0.9 nanoplates were spark plasma sintered into phase-pure, textured, dense pellets, the ZT of which has been significantly enhanced to ≈1.16 from ≈0.74 at 923 K via microstructure texturing control. These approaches provide versatile, scalable and low-cost routes to p-type layered tin chalcogenides with controllable composition and competitive thermoelectric performance.

Original language	English
Pages (from-to)	3828-3836
Number of pages	9
Journal	Chemical Science
Volume	9
Issue number	15
Early online date	23 Mar 2018
DOIs	https://doi.org/10.1039/C7SC05190E
Publication status	Published - 21 Apr 2018

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@article{17bafc72caf548ab8f4ddd2ac8320ef2,

title = "Topotactic anion-exchange in thermoelectric nanostructured layered tin chalcogenides with reduced selenium content",

abstract = "Anion exchange has been performed with nanoplates of tin sulfide (SnS) via “soft chemical” organic-free solution syntheses to yield layered pseudo-ternary tin chalcogenides on a 10 g-scale. SnS undergoes a topotactic transformation to form a series of S-substituted tin selenide (SnSe) nano/micro-plates with tuneable chalcogenide composition. SnS0.1Se0.9 nanoplates were spark plasma sintered into phase-pure, textured, dense pellets, the ZT of which has been significantly enhanced to ≈1.16 from ≈0.74 at 923 K via microstructure texturing control. These approaches provide versatile, scalable and low-cost routes to p-type layered tin chalcogenides with controllable composition and competitive thermoelectric performance.",

author = "Guang Han and Popuri, \{Srinivas R.\} and Greer, \{Heather F.\} and Ruizhi Zhang and Lourdes Ferre-Llin and Bos, \{Jan-Willem G.\} and Wuzong Zhou and Reece, \{Michael J.\} and Paul, \{Douglas J.\} and Knox, \{Andrew R.\} and Gregory, \{Duncan H.\}",

year = "2018",

month = apr,

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doi = "10.1039/C7SC05190E",

language = "English",

volume = "9",

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journal = "Chemical Science",

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publisher = "Royal Society of Chemistry",

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T1 - Topotactic anion-exchange in thermoelectric nanostructured layered tin chalcogenides with reduced selenium content

AU - Han, Guang

AU - Popuri, Srinivas R.

AU - Greer, Heather F.

AU - Zhang, Ruizhi

AU - Ferre-Llin, Lourdes

AU - Bos, Jan-Willem G.

AU - Zhou, Wuzong

AU - Reece, Michael J.

AU - Paul, Douglas J.

AU - Knox, Andrew R.

AU - Gregory, Duncan H.

PY - 2018/4/21

Y1 - 2018/4/21

N2 - Anion exchange has been performed with nanoplates of tin sulfide (SnS) via “soft chemical” organic-free solution syntheses to yield layered pseudo-ternary tin chalcogenides on a 10 g-scale. SnS undergoes a topotactic transformation to form a series of S-substituted tin selenide (SnSe) nano/micro-plates with tuneable chalcogenide composition. SnS0.1Se0.9 nanoplates were spark plasma sintered into phase-pure, textured, dense pellets, the ZT of which has been significantly enhanced to ≈1.16 from ≈0.74 at 923 K via microstructure texturing control. These approaches provide versatile, scalable and low-cost routes to p-type layered tin chalcogenides with controllable composition and competitive thermoelectric performance.

AB - Anion exchange has been performed with nanoplates of tin sulfide (SnS) via “soft chemical” organic-free solution syntheses to yield layered pseudo-ternary tin chalcogenides on a 10 g-scale. SnS undergoes a topotactic transformation to form a series of S-substituted tin selenide (SnSe) nano/micro-plates with tuneable chalcogenide composition. SnS0.1Se0.9 nanoplates were spark plasma sintered into phase-pure, textured, dense pellets, the ZT of which has been significantly enhanced to ≈1.16 from ≈0.74 at 923 K via microstructure texturing control. These approaches provide versatile, scalable and low-cost routes to p-type layered tin chalcogenides with controllable composition and competitive thermoelectric performance.

U2 - 10.1039/C7SC05190E

DO - 10.1039/C7SC05190E

M3 - Article

SN - 2041-6520

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SP - 3828

EP - 3836

JO - Chemical Science

JF - Chemical Science

IS - 15

ER -

Topotactic anion-exchange in thermoelectric nanostructured layered tin chalcogenides with reduced selenium content

Abstract

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